Extravagance Or Actually A Worthwhile Upgrade?

Dale.

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I am considering some lens upgrades. The problem is, do I want to do it more than I need to do it? If it's 'want', then I'll be saving a wad of cash.

Plan is, my 17-40L, nice lens but dated now and it has its issues too. Possible upgrade to the 16-35 f4L, or one of the Sigma variations.

24-105L, upgrade to the Mk2, or again, a Sigma variant.

My more pressing upgrade though would be my 100-400L Mk1, upgrades to the Mk2. If I do upgrade, this will be the first one. P-ex the Mk1 against the Mk2.

The problem is, my Mk1 is mint, apart from the hood. It also produces nice images, sharp enough when I put the effort in. I can't help think though that the Mk2 would be 'better' ( for want of another word) on a 5Div and also, being amore modern lens on a more modern camera. The 5Div wasn't around when the Mk1 100-400 was in it's heyday. I also have an R7 on pre-order, with the adapter.

Lenses are funny things though, I have lenses here from film cameras, so really old, relatively speaking, that produce perfectly acceptable images, even when adapted to digital cameras.

Part of me thinks I should soldier on with what I have, it's still lovely glass but I have this nagging thought that newer could be even better.

I suppose the question really is, is the Mk2 100-400 a significant step up to the Mk1? The Mk1 was good back then, it's not gone bad because the Mk2 is around.
 
Upgrade the 17-40 to either the 16-35 2.8 or 16-35 F4. Both perform better.

I briefly had a 5ds and 100-400 mk2. It was a stellar lens. You should definitely buy this as well as it is an incredible lens £ for £ and designed around high pixel density cameras (which you have).

Have no doubt, buy with conviction and pride.
 
Hmmm... The want/need conundrum at its worst.

As always, it'll boil down to the cost to change and whether YOU can justify that cost to whoever it may concern.
What are the real world differences between the Mk 1 and Mk 2? If the design is the same but there are some fresh bells and whistles, I'd stick with the old lens but if there's been a real redesign, I'd be looking deeper to see if they were enough to make the change worth it. Do you have a decent real shop within striking distance? If so, do you have a good relationship with them? (I used to be able to buy 2nd hand lenses from a local shop with a few days approval.)
 
My more pressing upgrade though would be my 100-400L Mk1, upgrades to the Mk2.
Speaking from experience the MKII is far superior to the MKI
As is the 70-200 MKII v MKI
 
I changed my 100-400mm to the MKII and bought the 16-35mm F/4 (I also have the R7 on preorder)

The 100-400mm MKII is a significant upgrade to the MKI ... it is also pretty good with the Canon 14.x MK III for added reach
The 16-35mm f/4 is a superb lens,

I haven't changed my 24-105mm f/4 as I rarely (never) use it.
 
Sounds like the upgrade is worthwhile IF you can sneak it past management!!!
 
Sounds like the upgrade is worthwhile IF you can sneak it past management!!!
Well, as I recall there is little difference in appearance but IIRC there is a change from 'push/pull' zoom action to 'rotation' (has been some years since I had my Canon 100-400 IS zoom MK1 and then MK2.... so have I remembered that ok?)

So, depending on how observant the management is 'you' might it in under radar;)

PS on my Canon 5Dmk3 there was IMO a small but discernable difference in image quality between them. But the MK1 was no slouch!
 
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Upgrade the 17-40 to either the 16-35 2.8 or 16-35 F4. Both perform better.

I briefly had a 5ds and 100-400 mk2. It was a stellar lens. You should definitely buy this as well as it is an incredible lens £ for £ and designed around high pixel density cameras (which you have).

Have no doubt, buy with conviction and pride.
I haven't used either but I'm presuming the 16-35 f4 represents better vfm; for landscape I can't think of many occasions I'd be using a fast lens wide open. However I'm sure there is a market for a fast wide angle - otherwise Canon wouldn't make one !! Plus with more modern cameras and software increasing the iso becomes less problematic
 
I haven't used either but I'm presuming the 16-35 f4 represents better vfm; for landscape I can't think of many occasions I'd be using a fast lens wide open. However I'm sure there is a market for a fast wide angle - otherwise Canon wouldn't make one !! Plus with more modern cameras and software increasing the iso becomes less problematic

True - but I heard and would imagine that the 2.8 version has better centre to edge sharpness than the F4 and should @Dale. ever fancy a dabble in astro, a 2.8 zoom has a start there. That said, I've heard no real complaints over the F4 version, but the 2.8 will be better. The one I've linked to is the latest greatest version 3 and it would be by all accounts a terrific lens.
 
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Trouble here is your thinking along the lines of a DSLR lens upgrade ,when perhaps you should jump a couple of generations and go straight to mirrorless , I know quiet a few friends that have ,some even changing brand loyalty to . ….to date I can’t think of any of them that having kept there old gear as a backup actually use it .
I changed from canikon to Olympus due to heart problems with a fair amount of trepidation at the time now 3 years later I wonder why I didn’t do it sooner
 
Nice review on the 16.35 F2.8III


Don't forget the tamron 15-30 - would prefer native glass for longevity etc but it's a very good bit of kit but lacks the ability for front mount filters, which is a big no from me. The two lens I've given links to are the complete imaging solution for a Canon DSLR shooter.

Once he goes mirrorless, EF to RF adapter and the lenses will perform flawlessly.
 
That's a big 'IF' Steve. In my case I doubt ever . . . ;)

No reason in Nikon land. 45mp in the D850 is the same 45mp in the Z7ii - even the Z9 doesn't have more. There is nothing in the Z7ii or Z9 that would benefit me over a D850. A 60mp sensor might...but not looking likely so far.

The R5 in Canon land is a more exciting camera than the 5d4 - more MP and better DR in an R5 over a 5d4 - you and I might not like the form of a mirrorless- but the sensor would be a lure.
 
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Upgrade the 17-40 to either the 16-35 2.8 or 16-35 F4. Both perform better.

I briefly had a 5ds and 100-400 mk2. It was a stellar lens. You should definitely buy this as well as it is an incredible lens £ for £ and designed around high pixel density cameras (which you have).

Have no doubt, buy with conviction and pride.


My 17-40 has served me well and it's still a nice lens. It's getting on though, not that that worries me, I just feel newer L lenses would be better on a newer body (5Div) although that body is starting to get on a bit too. I think it would be 16-35 f4 for me though, cracking lens and a bit cheaper than the 2.8, I have to factor that in as I'm looking at over £4k potentially for this upgrade, over 3 lenses. I can't see me using 2.8 for landscapes. I don't do astro, which is where 2.8 would come into its own. The 17-40 seems bad for CA, one thing I loath, as it either leaves a colour fringe on the RAW, or a halo, when removed with lens corrections, especially on horizons/where land meets sky. I know there's a workaround to remove it in PS, which I often do but nobody should have to do that with any L lens.




Hmmm... The want/need conundrum at its worst.

As always, it'll boil down to the cost to change and whether YOU can justify that cost to whoever it may concern.
What are the real world differences between the Mk 1 and Mk 2? If the design is the same but there are some fresh bells and whistles, I'd stick with the old lens but if there's been a real redesign, I'd be looking deeper to see if they were enough to make the change worth it. Do you have a decent real shop within striking distance? If so, do you have a good relationship with them? (I used to be able to buy 2nd hand lenses from a local shop with a few days approval.)


Thanks.

Steve raises a good point with newer lenses resolving newer sensors better. This would be enough for me to seriously consider (now) the 100-400 upgrade at least.

We have a WEX close by, although I'm not sure they would let me trial a lens. It migth be worth the ask though. I have a good relationship with LCE but their nearest shop is Newcastle, a fair step that.


MKII is far superior to the MKI


Not what I wanted to hear. :LOL: ;)

*reaches for credit card*



Thanks Chris. :) (y)


I changed my 100-400mm to the MKII and bought the 16-35mm F/4 (I also have the R7 on preorder)

The 100-400mm MKII is a significant upgrade to the MKI ... it is also pretty good with the Canon 14.x MK III for added reach
The 16-35mm f/4 is a superb lens,

I haven't changed my 24-105mm f/4 as I rarely (never) use it.


Thanks Mike.

I would consider changing my 2xMkiii for the 1.4x Mkiii as part of this upgrade.


Sounds like the upgrade is worthwhile IF you can sneak it past management!!!


I am the management, well, second in command to Litte Miss Powell.

Seriously though, Wifey is pretty cool with this kind of thing, I don't drink much and have never smoked, she'd rather see me get something out of it.




Tempting.

It would be the f4 16-35 though, despite the potential extra sharpness corner to corner, edge to edge of the 2.8, I think the F4 is way over and above my 17-40.


Well, as I recall there is little difference in appearance but IIRC there is a change from 'push/pull' zoom action to 'rotation' (has been some years since I had my Canon 100-400 IS zoom MK1 and then MK2.... so have I remembered that ok?)

So, depending on how observant the management is 'you' might it in under radar;)

PS on my Canon 5Dmk3 there was IMO a small but discernable difference in image quality between them. But the MK1 was no slouch!


Lol. Yes, the Mk1 is push pull. I've never really gellled with that but I'm mostly at 400 anyway, so once I lock it, not much changing of focal length occurs. The Mk2 is twist zoom.


I haven't used either but I'm presuming the 16-35 f4 represents better vfm; for landscape I can't think of many occasions I'd be using a fast lens wide open. However I'm sure there is a market for a fast wide angle - otherwise Canon wouldn't make one !! Plus with more modern cameras and software increasing the iso becomes less problematic


I think I'm sold on the F4. I can't really see the need for 2.8 that I would benefit from.


True - but I heard and would imagine that the 2.8 version has better centre to edge sharpness than the F4 and should @Dale. ever fancy a dabble in astro, a 2.8 zoom has a start there. That said, I've heard no real complaints over the F4 version, but the 2.8 will be better. The one I've linked to is the latest greatest version 3 and it would be by all accounts a terrific lens.

The 2.8 is a great lens , by all accounts, especially the Mkiii. All things considered though, I think the F4 would suffice for my needs. Didn't Thomas Heaton use on on his 5Div?


Do it. You only live once . . . ;)


This is true.


Trouble here is your thinking along the lines of a DSLR lens upgrade ,when perhaps you should jump a couple of generations and go straight to mirrorless , I know quiet a few friends that have ,some even changing brand loyalty to . ….to date I can’t think of any of them that having kept there old gear as a backup actually use it .
I changed from canikon to Olympus due to heart problems with a fair amount of trepidation at the time now 3 years later I wonder why I didn’t do it sooner

Not long ago, I considered Olympus. I ended up with a Fuji back then though, as I borrowed a friends X-Pro 1 and loved the sensor in that. I had my 7D at the time too and the Fuji was much cleaner. I ended up though staying with Canon, as I was heavily invested in Canon glass. I didn't have anything against Oly then and don't now, it's just circumstances dictate I stay Canon. Not long after, I bought the 5Div, which I still have and love.

I firmly believe mirrorless is the future, it's just a matter of time. I already have an R7 on pre order, with the adapter, so I can use my EF glass on it.

If/when the day comes, to change/upgrade my 5D, by then, I have little doubt, it will be for a mirrorless body.




Nice review on the 16.35 F2.8III


Don't forget the tamron 15-30 - would prefer native glass for longevity etc but it's a very good bit of kit but lacks the ability for front mount filters, which is a big no from me. The two lens I've given links to are the complete imaging solution for a Canon DSLR shooter.

Once he goes mirrorless, EF to RF adapter and the lenses will perform flawlessly.

That review will be part of my research into all this now. I'm almost 100% decided on the 100-400 upgrade. What I'll be doing landscape lens wise isn't quite as clear cut at the moment, the 16-35 is a front runner but I'm not ruling out 3rd party glass at this stage.


That's a big 'IF' Steve. In my case I doubt ever . . . ;)


I have dipped my toe in the mirrorless waters, previously owning a couple of Fuji X cameras, and now a Canon M5, all of which, I love(d). The histogram in the VF is a boon for me.

I can't wait to get my hands on the R7, and compare it directly with my 5Div. I know it's not quite as clear cut as that, being a crop sensor versus full frame, mirrorless versus DSLR etc but it might hint at what the future holds.




It's a fair bet as he said he had a R7 on pre-order ;)


Yup, if Canon get their skates on and ship them, then yes, I'll soon have an R7. It's taking a while though, at this rate, there will be rumours of the R7Mk2. :LOL:


No reason in Nikon land. 45mp in the D850 is the same 45mp in the Z7ii - even the Z9 doesn't have more. There is nothing in the Z7ii or Z9 that would benefit me over a D850. A 60mp sensor might...but not looking likely so far.

The R5 in Canon land is a more exciting camera than the 5d4 - more MP and better DR in an R5 over a 5d4 - you and I might not like the form of a mirrorless- but the sensor would be a lure.

It will be interesting to see how the R7 performs, versus the 5D. It's a new sensor, although more a revamp of the current 90D, 6DMkii sensor, I think. The real comparison for me though is how the R7 will compare against the sensor in my 7D. I no longer have the 7D, but I remember it well. :LOL:
 
Not what I wanted to hear. :LOL: ;)

*reaches for credit card*



Thanks Chris. :) (y)
I'm always happy to help someone else spend money :D
 
I think I'm sold on the F4. I can't really see the need for 2.8 that I would benefit from.




The 2.8 is a great lens , by all accounts, especially the Mkiii. All things considered though, I think the F4 would suffice for my needs. Didn't Thomas Heaton use on on his 5Div?




That review will be part of my research into all this now. I'm almost 100% decided on the 100-400 upgrade. What I'll be doing landscape lens wise isn't quite as clear cut at the moment, the 16-35 is a front runner but I'm not ruling out 3rd party glass at this stage.
We can raise the bar a bit from Thomas Heaton :D

If you do the 2.8- it has to be the MkIII - if not F4.

The 100-400 II is bloody amazing - you can always upgrade the 17-40 later.
 
I think a lot of people will have traded in their 100-400 Mk2 for the RF100-500 (SWMBO has) so I think there will be plenty of reasonably priced used ones about (SWMBOs is still at Cambrian IIRC), I think because of the EF-RF migration market for EF stuff is not what it used to be. However, that will affect the price of your Mk1, regardless of condition.

She is a Canon user and having started with a 300D, she gradually evolved her gear to the stage where she had the most recent L glass because the older glass didn;t quite cut the mustard with her 5D4. Her longer lenses (70-200 and 100-400) went on R6, RF70-200/2.8 and RF100-500.
 
We can raise the bar a bit from Thomas Heaton :D

If you do the 2.8- it has to be the MkIII - if not F4.

The 100-400 II is bloody amazing - you can always upgrade the 17-40 later.


:LOL:

I think the 100-400 is now becoming a very pressing upgrade, one that must happen and is no longer an 'extravagance'. ;)


I think a lot of people will have traded in their 100-400 Mk2 for the RF100-500 (SWMBO has) so I think there will be plenty of reasonably priced used ones about (SWMBOs is still at Cambrian IIRC), I think because of the EF-RF migration market for EF stuff is not what it used to be. However, that will affect the price of your Mk1, regardless of condition.

She is a Canon user and having started with a 300D, she gradually evolved her gear to the stage where she had the most recent L glass because the older glass didn;t quite cut the mustard with her 5D4. Her longer lenses (70-200 and 100-400) went on R6, RF70-200/2.8 and RF100-500.


I did think about the 100-500 RF and it would be very handy on an R7, with 800mm FF equiv. In my position though, still having the 5Div and with no plans to upgrade that anytime soon, I think staying with EF glass is better (for me) as EF can be adapted to RF bodies, but RF can't be adapted to EF bodies. The depreciation also concerned me and because of that, I think I would probably do the upgrade as second hand (as new or ex) or possibly grey.



I need to sleep on this but I'm convinced now the 100- 400 upgrade has to happen.

I tend not to do many landscapes at the moment and when I do, it's becoming during the Autumn and Winter, rather than all year round now.

One question I have, whilst I'd rather stick with Canon L, are there any other 3rd party lenses in that range, (16-100mm ish) worth a mention, to replace (in time) my 17-40 and 24-105 Mk1?
 
:LOL:

I think the 100-400 is now becoming a very pressing upgrade, one that must happen and is no longer an 'extravagance'. ;)





I did think about the 100-500 RF and it would be very handy on an R7, with 800mm FF equiv. In my position though, still having the 5Div and with no plans to upgrade that anytime soon, I think staying with EF glass is better (for me) as EF can be adapted to RF bodies, but RF can't be adapted to EF bodies. The depreciation also concerned me and because of that, I think I would probably do the upgrade as second hand (as new or ex) or possibly grey.



I need to sleep on this but I'm convinced now the 100- 400 upgrade has to happen.

I tend not to do many landscapes at the moment and when I do, it's becoming during the Autumn and Winter, rather than all year round now.

One question I have, whilst I'd rather stick with Canon L, are there any other 3rd party lenses in that range, (16-100mm ish) worth a mention, to replace (in time) my 17-40 and 24-105 Mk1?

I'd still pick EF over RF - simply for the less plasticky construction and the ability to adapt it quite well to other makes inc Sony E, Nikon Z and Fuji GF. You'll pay less money and get a nicer lens to boot. Some of the RF stuff has nasty extending barrel zooms and the older EF equivalent lovely internal zooming.

That's the only downside of the 100-400ii - its not an internal zoom like the EF 70-200 2.8II and III.
 
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The move towards mirrorless for most manufacturers now makes the DSLR lens less of a ‘future investment’ as there’s going to be greater depreciation of DSLR kit as manufacturers repair/support becomes an issue and a smaller buying market as more move towards mirrorless. DSLR lenses will still work well on mirrorless but the issue becomes future support of these lenses as manufacturers start to only produce mirrorless cameras and DSLRs.

The cost implication is another consideration. whilst DSLR kit becomes cheaper what percentage will you get back when you sell it later? At some point that will be zero. Mirrorless glass will of course be more expensive than DSLR equivalent glass but it should keep its value better, be supported into the future and there will very likely be a future market for it. The answer to this really depends on how long into the future you expect to keep or use camera kit.

Personally if I was in this position now I’d not be thinking of upgrading any DSLR lenses if I was swapping out nearly like for like with something I already had unless it really was an absolute steal at a no or very low cost change. I’d look at upgrading to a mirrorless camera and use the DSLR glass I already had whilst I slowly transitioned across lenses to mirrorless equivalents when required.

I say this as someone who’s fully transitioned to canon mirrorless from Nikon DSLR (via Sony as that was the only real workable mirrorless option when I was downgrading Nikon kit). At the time of down grading (2019) I didn’t see much point buying DSLR technology as the future then was mirrorless and the DSLR kit still had good trade in value.
 
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Same with Nikon!! No ZTF adapters.... otherwise I'd barge to the front of the queue for the 400/4,5.

I could get the lens but Nikon don't yet do a mirrorless body I want....

And that's me at 2000.:banana:
The point of the adapters is to allow current DSLR system users who’s most value will be in their collection of lenses to move to a mirrorless camera but slowly transition their lens collection to mirrorless equivalents without needing to sell everything they previously owned. This way they are more likely to stay with the same manufacturer rather than have the cash in their pocket to look at all manufacturers.

There’s no incentive for manufacturers to adapt a new mirrorless lens to older DSLR technology. In your case it’s win win in that the mirrorless camera you’d like will be made in the future and potentially that lens will be cheaper as you won’t necessarily need to buy new as there will some on the used market in a year or two.
 
@Dale. all of the lenses you want are available on the Canon test drive. Why don't you borrow each one for a weekend and do some real comparisons?
It doesn't cost you anything and you get to see if there is any real advantage.

I borrowed the 100-400 Mk2 from them and was impressed but not enough to splash the cash. You also get a cashback offer if you decide to buy a lens after borrowing it.

I do now shoot with an EOS RP and have swapped my 50mm and 24-105 for the RF versions. Part of my reasoning is that I wanted to eliminate the adapters both from a weather sealing point of view and the added bulk. Adapters did work fine with my Canon glass and still work fine with my Tamron glass (though my macro needed a free firmware update).
The other reason for upgrading lenses in my case was that both my Canon 50mm 1.4 and 24-105L Mk1 were getting old and losing value, so I sold them before they lost too much value.

It's a personal choice though and you have to work out if it's justifiable. The 24-105 is my most used lens, so it was easier to justify it, but I can't justify a macro lens upgrade.
 
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I had the 100-400mk1 sold it for the sigma 150-600 which was better all round, I hired the 100-400 mk2 from canon for 48hrs to compare against the sigma , but couldn't see any difference in image quality had lots of side by side comparisons but there was no difference, use the Sony 200-600 now which is the nicest of all three and brilliant for bif shots
 
I had the 100-400mk1 sold it for the sigma 150-600 which was better all round, I hired the 100-400 mk2 from canon for 48hrs to compare against the sigma , but couldn't see any difference in image quality had lots of side by side comparisons but there was no difference, use the Sony 200-600 now which is the nicest of all three and brilliant for bif shots

So the Sigma was better all round than the Canon MK I but the MK II was no better than the Sigma which means the MK II is also better all round than the MK I :)

The Sony lens won't fit the Canon unfortunately so doesn't really come into it.
 
True - but I heard and would imagine that the 2.8 version has better centre to edge sharpness than the F4 and should @Dale. ever fancy a dabble in astro, a 2.8 zoom has a start there. That said, I've heard no real complaints over the F4 version, but the 2.8 will be better. The one I've linked to is the latest greatest version 3 and it would be by all accounts a terrific lens.
As long as it is mkiii and only mkiii it's supposed to be the best one. I wouldn't bother with ii. And presumably there can still be poor copies but anything will be MILES ahead of 17-40.

They are all MASSIVE upgrades in terms of sharpness
 
The move towards mirrorless for most manufacturers now makes the DSLR lens less of a ‘future investment’ as there’s going to be greater depreciation of DSLR kit as manufacturers repair/support becomes an issue and a smaller buying market as more move towards mirrorless. DSLR lenses will still work well on mirrorless but the issue becomes future support of these lenses as manufacturers start to only produce mirrorless cameras and DSLRs.

The cost implication is another consideration. whilst DSLR kit becomes cheaper what percentage will you get back when you sell it later? At some point that will be zero. Mirrorless glass will of course be more expensive than DSLR equivalent glass but it should keep its value better, be supported into the future and there will very likely be a future market for it. The answer to this really depends on how long into the future you expect to keep or use camera kit.
I doubt good EF glass will ever be zero. Crap ones maybe. And more importantly I would expect mirror less glass to become considerably more affordable as market is getting slowly saturated and likewise new models come out. You are still paying somewhat early adopter prices with COVID lunacy surcharge on top so basically really a lot
 
I had the 100-400mk1 sold it for the sigma 150-600 which was better all round, I hired the 100-400 mk2 from canon for 48hrs to compare against the sigma , but couldn't see any difference in image quality had lots of side by side comparisons but there was no difference, use the Sony 200-600 now which is the nicest of all three and brilliant for bif shots

So the Sigma was better all round than the Canon MK I but the MK II was no better than the Sigma.


This potentially puts a new angle on the 100-400 Mkii.

If the Mkii is no better than the Sigma, I'm saving the money as I already have the 150-600 (C). I would say it is as sharp and maybe a little sharper than my Mki 100-400. If it's as sharp as a Mkii, then I don't see much point in getting the Mkii.

I do love my 150-600, for what it is, it is a phenominal lens (it is very sharp) but I have a nagging doubt that it doesn't get the best out of the 5Div sensor resolution wise.

I could be wrong.
 
This potentially puts a new angle on the 100-400 Mkii.

If the Mkii is no better than the Sigma, I'm saving the money as I already have the 150-600 (C). I would say it is as sharp and maybe a little sharper than my Mki 100-400. If it's as sharp as a Mkii, then I don't see much point in getting the Mkii.

I do love my 150-600, for what it is, it is a phenominal lens (it is very sharp) but I have a nagging doubt that it doesn't get the best out of the 5Div sensor resolution wise.

I could be wrong.
I've seen Canon mkII which is excellent, not tried sigma but you can play with this resource. https://www.the-digital-picture.com...meraComp=453&SampleComp=0&FLIComp=5&APIComp=0
This puts Canon somewhat ahead of Sigma at 400mm. Only question is if the extension to 600mm tip the scales. These are at 21MP and I think the Sigma looks already maxxed out, Canon is not.
I have 400mm 5.6 L prime in addition to a couple of 70-200 zooms. It is a tripod lens but you will find resolution is insane on this.
 
I've seen Canon mkII which is excellent, not tried sigma but you can play with this resource. https://www.the-digital-picture.com...meraComp=453&SampleComp=0&FLIComp=5&APIComp=0
This puts Canon somewhat ahead of Sigma at 400mm. Only question is if the extension to 600mm tip the scales. These are at 21MP and I think the Sigma looks already maxxed out, Canon is not.
I have 400mm 5.6 L prime in addition to a couple of 70-200 zooms. It is a tripod lens but you will find resolution is insane on this.

That's very helpful, thank you.
 
Canon 100-400 mk ii is very sharp and plays nicely with the 1.4 mkiii extender - the 16-35 f4 mkii is a big upgrade to the 17-40 - reason I chose it over 2.8 version is that f4 version has IS
 
So, Dale, how's the new lens? :)
 
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