Canon eos are SLRs?

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Pablo666

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This has me confused as have had film cmeras where you have to wind a film. These were SLR. I assumed that DSLR are digital cameras using a sensor. So are Canon EOS film cameras that require a film to be inserted?

I only came across this when I was looking at a 2000D and this took me to difrent lenses EF and RF.
 
EOS - films camera - I think they all had motorised winders. EOS was a fancy word for AF and electrical contacts for camera to lens. EF is the mount
EOS D-series camera aredigital SLR EF mount (or EF-S if APS-c)
EOS R- series camera are mirrorless (RF)
 
One big difference between SLR/DSLR and mirrorless is that mirrorless has a shorter registration distance so if you want to mount SLR/DSLR lenses on a mirrorless camera you need an adapter which acts as a spacer to get the lens back to the distance from the sensor that it needs to be at. So, Eos EF for SLR's and DSLR's with the same registration distance and RF for mirrorless.
 
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Body
If the EOS model has a D suffix it’s digital
I’d the EOS model has an R prefix it’s digital and mirror less.
Lenses
R are for the R cameras
EF-S are for D cameras with crop sensor
EF are for D cameras with full frame sensor
Some inter comparability and may require adaptor.
Not sure which lenses go with the film version.
 
EF and EF-S will both fit on the crop sensor bodies....IIRC the alignment dot for bayonet is 'white' on the EF-S compared to 'red' on the EF ones i.e. they align differently for mounting.

However, you cannot natively use EF-S lenses on a Full Frame body e.g. a model 5D.
Even if there is an adapter to fit an EF-S lens to a Full Frame body the 'image circle' would not cover the sensor.......any such image would have a physical vignette.

PS when I got my first Canon digital the 350D I used, briefly, one of my film era EF lenses from my old EOS 650
 
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Note that EF-S lenses may not fit earlier Canon APS-C cameras. I don't know all of the earlier ones which are incompatible, all I know is that they wouldn't fit the 10D I had but third party APS-C lenses with less intrusive rear ends would work. I think I had a Tamron APS-C lens which would fit.

One nice thing about the 10D was that it had a relatively quiet shutter unlike the EF-S compatible cameras I had which had a mechanism which sounded like an anvil being thrown into a tin bath. I believe this was caused by the extra moving parts needed to accomodate EF-S lenses.
 
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Box Brownie said:
EF and EF-S will both fit on the crop sensor bodies....IIRC the alignment dot for bayonet is 'white' on the EF-S compared to 'red' on the EF ones i.e. they align differently for mounting.

However, you cannot natively use EF-S lenses on a Full Frame body e.g. a model 5D.
Even if there is an adapter to fit an EF-S lens to a Full Frame body the 'image circle' would not cover the sensor.......any such image would have a physical vignette.

PS when I got my first Canon digital the 350D I used, briefly, one of my film era EF lenses from my old EOS 650
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That's interesting. Since EF lenses fit on cropped sensor bodies (I have used these), I thought the EF-S lenses would physically fit on full frame bodies, but you would get black/dark edges. Is that not so? Is there some witchcraft going on? :ROFLMAO:
 
woof woof said:
Note that EF-S lenses may not fit earlier Canon APS-C cameras. I don't know all of the earlier ones which are incompatible, all I know is that they wouldn't fit the 10D I had but third party APS-C lenses with less intrusive rear ends would work. I think I had a Tamron APS-C lens which would fit.
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Hmm! I wasn't aware of such body model differences :thinking: :thinking:
woof woof said:
One nice thing about the 10D was that it had a relatively quiet shutter unlike the EF-S compatible cameras I had which had a mechanism which sounded like an anvil being thrown into a tin bath. I believe this was caused by the extra moving parts needed to accomodate EF-S lenses.
Click to expand...

Bebop said:
That's interesting. Since EF lenses fit on cropped sensor bodies (I have used these), I thought the EF-S lenses would physically fit on full frame bodies, but you would get black/dark edges. Is that not so? Is there some witchcraft going on? :ROFLMAO:
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I think you have a point but IIRC and AFAIK the EF-S lenses have a rear element that reaches deeper into the mirror box of dSLR full frame bodies and as such the mirror would strike the lens. Of course with mirror less such physical limitation does not come into play......but the loss of image circle coverage I think is still present.

Note ~ of course as I sold all my Canon kit in around 2018 I am relying on memory of Canon EOS system usage between 1989 to 2018 and memory does suffer when not used regularly:LOL:
 
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Box Brownie said:
I think you have a point but IIRC and AFAIK the EF-S lenses have a rear element that reaches deeper into the mirror box of dSLR bodies and as such the mirror would strike the lens. Of course with mirror less such physical limitation does not come into play......but the loss of image circle coverage I think is still present.

Note ~ of course as I sold all my Canon kit in around 2018 I am relying on memory of Canon EOS system usage between 1989 to 2018 and memory does suffer when not used regularly:LOL:
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Ah yes that could be the case. Certainly that was the reason some lenses would not take an extender. I still have some Canon kit which I have used this week for the first time in a very long time, but no Ef-s lenses and only the R5, which would need an adaptor anyway.
 
Box Brownie said:
Hmm! I wasn't aware of such body model differences :thinking: :thinking:
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I think the first EF-S camera was the 300D so likely anything before that won't take them. EF-S requires the mirror to be moved in such a way as to clear the back of the EF-S lenses which protrude further into the camera so Canon had to redesign the flappy mirror mechanism.

This is why I preferred third party APS-C lenses as they fit anything. AFAIK.
 
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EOS is like a mount, it uses EF and EF-S lenses (digital).
Before EOS, it was FD
Now its is RF

So....FD to EOS and RF. In that order.

FD was the manual focus lenses, then when they transitioned into auto focus, they launched the EOS system. That was in the 90's, during the time the bodies went from film to digital. So the mount stays the same, but internally it went digital.

RF is all digital, mirrorless.

SLR Single Lens Reflex, it is referred to cameras where you see through the lens, with the mirror box inside that flips up. All DSLR are SLR, but not all SLR are digital, for very obvious reasons.

Not all film cameras are SLR, a rangefinder that takes film is not a SLR, it's a rangefinder, because you are not looking through the lens. Not all SLR takes film, and not all rangefinder takes film. Not all film cameras are SLR either, like compact film or disposable film cameras you do not see through the lens.

The way you look through the lens and whether it is digital or analog can happen independently of each other.
 
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Raymond Lin said:
EOS is like a mount, it uses EF and EF-S lenses (digital).
Before EOS, it was FD
Now its is RF

So....FD to EOS and RF. In that order.
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That is not correct. Mirrorless cameras are also EOS. Eg EOS R5.

As already pointed out a few times above EOS refers to the electrically connected lenses for autofocus, aperture etc.

EF, EF-s and RF are mounts.

Even the M mount like M5 and M6 (early mirrorless cameras) were EOS cameras.

Essentially any Canon camera with interchangeable lenses which are controlled electronically would be branded EOS
 
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ecoleman said:
That is not correct. Mirrorless cameras are also EOS. Eg EOS R5.

As already pointed out a few times above EOS refers to the electrically connected lenses for autofocus, aperture etc.

EF, EF-s and RF are mounts.

Even the M mount like M5 and M6 (early mirrorless cameras) were EOS cameras.

Essentially any Canon camera with interchangeable lenses which are controlled electronically would be branded EOS
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This but RF-s is also a thing now, for RF crop cameras.
 
SLR stands for single lens reflex; and the reflex part refers to the use of a mirror to reflect the image to a viewfinder. There are also TLR (twin lens reflex), and DSLR/DTLR with the D added for digital.

That is opposed to non-reflex designs like large format where the "viewfinder" ground glass has to be removed and replaced with the film tray. Other simpler designs like rangefinders, and newer mirrorless cameras also do not use a mirror and are not relex designs.

The Canon lens mounts for film cameras is/was screw, R, FL, and then FD. EF followed with electronics for communication with EOS cameras (film/digital).
Currently there is EF (-S small image circle), *EF-M (M series mirrorless), and RF (R series mirrorless, -S small image circle).

The only time Canon didn't require you to buy all new lenses as you upgraded/changed was when they first replaced the film with a digital sensor (original EF mount). If you already have full frame lenses you do not have to replace them if you "downgrade" to a small sensor camera (of that series).

(*only third party are still making EF-M lenses)
 
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sk66 said:
The Canon lens mounts for film cameras is/was screw, R, FL, and then FD. EF ...
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In the interests of completeness: the Canon screw mount was an exact copy of the Leica screw mount.

Canon screw mount lenses were intended to be used only on the Canon rangefinder film cameras.
 
sk66 said:
SLR stands for single lens reflex; and the reflex part refers to the use of a mirror to reflect the image to a viewfinder. There are also TLR (twin lens reflex), and DSLR/DTLR with the D added for digital.

That is opposed to non-reflex designs like large format where the "viewfinder" ground glass has to be removed and replaced with the film tray. Other simpler designs like rangefinders, and newer mirrorless cameras also do not use a mirror and are not relex designs.

The Canon lens mounts for film cameras is/was screw, R, FL, and then FD. EF followed with electronics for communication with EOS cameras (film/digital).
Currently there is EF (-S small image circle), *EF-M (M series mirrorless), and RF (R series mirrorless, -S small image circle).

The only time Canon didn't require you to buy all new lenses as you upgraded/changed was when they first replaced the film with a digital sensor (original EF mount). If you already have full frame lenses you do not have to replace them if you "downgrade" to a small sensor camera (of that series).

(*only third party are still making EF-M lenses)
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There's a DTLR??? A Mamiya D330s? Or a Yashica 124D? :LOL:
 
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