Tutorial Should you use a filter on your lens?

Garry Edwards

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Garry Edwards submitted a new resource:

Should you use a filter on your lens? - Which lens filters are worth using?

When I thought about writing this tutorial I needed to make a decision – should I deal with the absolute basics and assume that everyone reading it only shoots on digital, should I write a scholarly article that explains the physics in detail, or should I try to compromise with a simple approach that also assumes that you’ll want to understand why filters became popular?


I’ve gone for the compromise approach, if you want to know more, then Google is your...

Read more about this resource...
 
Nicely done Garry, as is usual with your articles - a very good and easy to understand explanation. (y)

Now we'll be able to refer newer photographers to this article instead of repeatedly having to explain why they don't (or do) need to use filters.

Thanks for taking the time to write it. :)
 
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Nicely done Garry, as is usual with your articles - a very good and easy to understand explanation. (y)

Now we'll be able to refer newer photographers to this article instead of repeatedly having to explain why they don't (or do) need to use filters.

Thanks for taking the time to write it. :)
(My bold). Thanks, that's pretty much why I wrote it. I'm thinking that I need to write one about lens hoods, possibly the most useful but least valued accessory :)
Does anyone have any views about this?
 
(My bold). Thanks, that's pretty much why I wrote it. I'm thinking that I need to write one about lens hoods, possibly the most useful but least valued accessory :)
Does anyone have any views about this?
Only to agree, and to add that I am amazed at the number of times I've seen supposedly pro photographers shooting with the hood still mounted reversed on the various 'Masters of Photography' type shows.
 
Only to agree, and to add that I am amazed at the number of times I've seen supposedly pro photographers shooting with the hood still mounted reversed on the various 'Masters of Photography' type shows.


I do it often. Then I am not a pro.
If the sun is behind me, and nothing bright on either side, why must I take it off and turn it round, just to avoid annoying people ? :)

If it is needed, it is at least on the camera ready to use and not at home.
 
I do it often. Then I am not a pro.
If the sun is behind me, and nothing bright on either side, why must I take it off and turn it round, just to avoid annoying people ? :)

If it is needed, it is at least on the camera ready to use and not at home.
It's more that a reversed hood will make using zoom / focus rings harder, and often makes holding the lens more awkward as well.
There are times when I have the hood detached (such as when using a CPL, or my Lee filters), but in those situations I'll just drop it back in the bag.
 
It's more that a reversed hood will make using zoom / focus rings harder, and often makes holding the lens more awkward as well.
There are times when I have the hood detached (such as when using a CPL, or my Lee filters), but in those situations I'll just drop it back in the bag.
Yes, I agree, there are some lenses that are more difficult to use with it reversed, but if that became a nuisance, I would just turn it round, or "drop it in the bag", but I don't see the point in doing either just for the sake of it, it may as well be on the lens the wrong way round :)
 
Let's not turn this into a bunfight . . .
I'm convinced, and have started writing it. It is, of course, a lot more work than I thought it would be :)
 
I do it often. Then I am not a pro.
If the sun is behind me, and nothing bright on either side, why must I take it off and turn it round, just to avoid annoying people ? :)

If it is needed, it is at least on the camera ready to use and not at home.


Some people are very easily annoyed..... :naughty:
 
I do it often. Then I am not a pro.
If the sun is behind me, and nothing bright on either side, why must I take it off and turn it round, just to avoid annoying people ? :)

If it is needed, it is at least on the camera ready to use and not at home.
Being a clumsy chap, I use a hood in all circonstances. It's my insurance against bumps.
 
I like to have a filter on when photographic inquisitive kids with sticky fingers
I think that falls in the same category as mud / dust / salt spray - the 'muck' is not going to damage the front element directly, but repeatedly wiping it clean to get a clear shot adds a risk of scratching the lens coatings (if there's a small bit of grit in the stuff you're wiping off).
 
I like to have a filter on when photographic inquisitive kids with sticky fingers


I prefer to follow the instructions given on every box of matches - "KEEP AWAY FROM CHILDREN"!!!
 
I had a number of filter's in the film days but no idea where they all are now. Turned out the only one I cared to use much was the polarizer filter. Found my old polarizer in the camera bag a few days ago and thinking of trying it out again. Had a red filter that was for B&W if I remember right but don't recall what it was supposed to do. Suspect on digital it might mess up a color photo! Seems the only time I ever used to take off the lens hood was when I put on my polarizer, couldn't adjust it with the lens hood on. Why I never used it with the hood reversed I have no clue but used to have a couple lens's that didn't have a hood and don't know that I could tell the photo's I didn't use it in.
 
Being a clumsy chap, I use a hood in all circonstances. It's my insurance against bumps.

Some years ago, when I first got my 100-400 L, I was out and about with it on one of its very first outings into the wild...I had it tilted upright to remove the lens cap, and somehow - don't ask, I have NO idea - it slipped from my hand. While I had the strap safely anchored to prevent a REAL disaster, it did drop far enough to clatter into the metal pedestrian fence barrier directly in front of me... And that is why I always use the hood now, AND why I was never able to use screw-on filters on that lens for the entire time I had it! (Thus neatly tieing together the two parts of this thread!)
 
I use quality filters like K&F nono-X, Brreakthrough, BW or Hoya HD (worst in the list). Generally there is very little difference to none in sharpness you would notice even on 50MP FF. If you put cheap ones, fake ones or worse plastic fantastic expect a disaster with your IQ.

The main purpose is obviously PROTECTION of the front. I absolutely hate when people sell scratched glass and try to pass it on excellent. If you are one of them please just STOP IT.
Anything in wet weather, by the sea / beach or food fights you NEED one. Your shoot might pay for a new lens but more likely than not will not be anywhere near enough. Then don't try to sell it on ebay as perfect!
Obviously hood always always always stays on the right way round. I see enough photo clowns walking with hoods reversed. Just stop it.

Now there are cases when you want it off, and indoors will be usually infinitely safer to do so. Here is a quick list when you may consider taking it off:

  1. stray sun or any artificial strong lights hitting front element or filter = massive flare. You are however better off just flagging the lens with anything, even your wallet.
  2. very bright highlights like windows in the room. unless you are doing full on lighting, which you really should
  3. Anything 200mm +. Just use the hood.
And finally it has to be said CPL and any related filters will show off any flaws much much stronger than any good UV / protector. Reduced contrast, ghosting, colour shifts, the whole lot. Only use one where circumstances really call for it.
 
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So far I have over come the urge to lecture strangers using lenses with reversed lens hoods but only just.
how do you deal with some YT clowns, some actually pretty big names?"
 
(My bold). Thanks, that's pretty much why I wrote it. I'm thinking that I need to write one about lens hoods, possibly the most useful but least valued accessory :)
Does anyone have any views about this?
It would be useful, but I doubt it would need to be very long. Something along the line of "You should use a lens hood wherever possible as not only does it reduce glare it's one of the better ways to physically protect the front element" ;)
Only to agree, and to add that I am amazed at the number of times I've seen supposedly pro photographers shooting with the hood still mounted reversed on the various 'Masters of Photography' type shows.
I find it astonishing too. That being said I had my lens hood on reversed last week at Silverstone as it was very windy and the hood was acting like a kite making if very difficult to shoot.
 
Hi Gary.
I bought a Nikon 72mm NC Neutral Colour filter for my 24-70mm Z lens.
My question is regarding your article would this come under UV filter type?
Thanks for your article.
Yes, basically it's a protective cover for the camera lens, and possibly one of the better ones
 
There are a number of technical applications where other sorts of filters can make a considerable difference.

I often shoot with infra red converted cameras (mine are full spectrum converted, seeing UV, Visible & near infrared) so for me many filters take on a new role.
I also have a few that are specific to shooting with converted cameras (such as one that reverse the conversion blocking UV & IR but passing visible, and another that blocks visual but passes UV)

In the realm of astrophotography .there are also specialist filters including light pollution, and narrowband filters (for enhancing nebulae).

Your list of four types are not the only ones useful, but could be described as the only ones for normal photography.

When it comes to close up supplementaries there is a wide variation in quality. The cheap ones (with single element) are as you say quite poor. Achromatic supplementaries are much better, but can be rather expensive. Raynox make a couple that are 3 element models that clip on to the lenses filter threads. I tend to use mine on my macro lenses when I want more magnification than the lens alone achieves. Results are often better than I get with extension tubes, as the Raynox lenses do not reduce light...

The split diopter is actually designed to focus one side close while allowing the other side to focus on the background. The example that is often shown involves a close up of a hedge, with the rest of the view near infinity. Getting the background OOF is actually the normal state of affairs in macro.

I don't normally bother with UV filters, even with my converted cameras they make limited difference when using modern lenses. I will generally fit one if there is spray/dust/grit flying around where I'm shooting.

Here's a typical SOOC shot using a red filter on one of my converted cameras
P1160569 by Mike Kanssen, on Flickr

Very different than what a normal camera would see!
 
A uv filter may not do much today , but it give some protection to the camera glass, i would rather replace the filter than have the lens repaired or have to replace it
 
DEET insect repellent is a good organic solvent and will dissolve/damage lens coatings so I always use a filter when I or those around me are going to be using it (I use a roll-on or wipes, but often people spray it around with gay abandon). I have a collection of UV filters with damaged coatings, but no lenses with damaged coatings...
 
There are a number of technical applications where other sorts of filters can make a considerable difference.

I often shoot with infra red converted cameras (mine are full spectrum converted, seeing UV, Visible & near infrared) so for me many filters take on a new role.
I also have a few that are specific to shooting with converted cameras (such as one that reverse the conversion blocking UV & IR but passing visible, and another that blocks visual but passes UV)

In the realm of astrophotography .there are also specialist filters including light pollution, and narrowband filters (for enhancing nebulae).

Your list of four types are not the only ones useful, but could be described as the only ones for normal photography.

When it comes to close up supplementaries there is a wide variation in quality. The cheap ones (with single element) are as you say quite poor. Achromatic supplementaries are much better, but can be rather expensive. Raynox make a couple that are 3 element models that clip on to the lenses filter threads. I tend to use mine on my macro lenses when I want more magnification than the lens alone achieves. Results are often better than I get with extension tubes, as the Raynox lenses do not reduce light...

The split diopter is actually designed to focus one side close while allowing the other side to focus on the background. The example that is often shown involves a close up of a hedge, with the rest of the view near infinity. Getting the background OOF is actually the normal state of affairs in macro.

I don't normally bother with UV filters, even with my converted cameras they make limited difference when using modern lenses. I will generally fit one if there is spray/dust/grit flying around where I'm shooting.

Here's a typical SOOC shot using a red filter on one of my converted cameras
P1160569 by Mike Kanssen, on Flickr

Very different than what a normal camera would see!
Mike, you're right of course. Specialist filters are essential for specialist types of photography such as yours, and which I know nothing about.
They continue to be essential for people who shoot on black and white film and who make paper prints, and to some extent to those who do the same on colour film, but my article was specifically written for digital photographers who can "process" their images on computer.
 
Mike, you're right of course. Specialist filters are essential for specialist types of photography such as yours, and which I know nothing about.
They continue to be essential for people who shoot on black and white film and who make paper prints, and to some extent to those who do the same on colour film, but my article was specifically written for digital photographers who can "process" their images on computer.
Both the cases I was referring to are these days normally done with digital, and the filters achieve things that can't be done by processing.

If your text had said 'These are the only filters that may actually be useful for normal photography with today’s technology' I would agree
 
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