EF vs EFS: Question1: Is there a difference in the end product in an EF and EFS lens of the same size ie 24mm EF vs 24mm EFS when used on a crop sensor camera? I know the EF will work...

PatM Loc: Rocky Mount Mo.

Question1: Is there a difference in the end product in an EF and EFS lens of the same size ie 24mm EF vs 24mm EFS when used on a crop sensor camera?
I know the EF will work on both frames and the EFS won’t.
I also have compared the data on both.
The biggest thing I know anything about is one has IS the other does not.
Minimum focus distance is minutely shorter on EFS.
Difference in elements and groups which I don’t understand.
Difference in focal length
Difference in filter thread and more.
Difference in price.
USM vs STM
Is the end product appreciably different on the same exact settings???
Thanx.
Pat

blackest Loc: Ireland

PatM wrote:

Question1: Is there a difference in the end produc... (show quote)

It's hard to generalise the ef-s lenses are made for the smaller crop sensor , maybe lighter because of the smaller elements The EF lenses are made for full frame and crop sensor camera's. It is not a certainty that an ef lens is any better quality than an ef-s lens. You need to figure out what lens focal length and max aperture you need and compare the models. The L glass is canons best and comes in ef mount only.

If you plan on going full frame later you might choose ef lenses over ef-s but there are no shortcuts really, sorry.

BebuLamar

If use on a crop sensor I doubt that the 3 times more expensive EF lens would even be sharper than the EF-S version.
I can't do the test myself and if I do nobody would believe my findings. Although many may not trust DxO but here are the results for the 24mm 2.8 lenses. You will find that the EF-S lens has a bit more vignetting but is overall a better lens for the APS-C camera and a lot cheaper.

https://www.dxomark.com/lenses/brand-canon/mounted_on-Canon_EOS_7D_Mark_II-977/launched-between-1987-and-2017/mount_type-Canon_EF-Canon_EF_S-Nikon_F_DX-Nikon_F_FX/focal-from-24-to-24/aperture_max-from-2.8-to-45/launch_price-from-0-to-13000-usd/lens_zoom-prime/sensor_brand-Canon#hideAdvancedOptions=false&viewMode=list&yDataType=global

PatM Loc: Rocky Mount Mo.

BebuLamar wrote:

If use on a crop sensor I doubt that the 3 times m... (show quote)

Thanks BebuLamar
I now have a new tool to help in making good decisions.
Have a nice day😎🇺🇸

CHG_CANON Loc: the Windy City

PatM wrote:

Question1: Is there a difference in the end produc... (show quote)

24mm is 24mm on the same camera whether an EF or EF-S. There are minor technical differences, some you noted like filter size and IS. The bigger differences are ruggedness of the build as in size, weight, weather resistance and overall ability to hold up on demanding conditions for the 24L. And then there's the cost ... The 24 EFS is intended to be a small, relatively cheap, sharp, f/2.8 prime.

PatM Loc: Rocky Mount Mo.

Thank you Brother. My dilemma now is is IS worth the cost difference. Check that out is is IS. I do note your experience in photography per your many posts here.
Have a good weekend 😎🇺🇸

CHG_CANON wrote:

24mm is 24mm on the same camera whether an EF or EF-S. There are minor technical differences, some you noted like filter size and IS. The bigger differences are ruggedness of the build as in size, weight, weather resistance and overall ability to hold up on demanding conditions for the 24L. And then there's the cost ... The 24 EFS is intended to be a small, relatively cheap, sharp, f/2.8 prime.

CHG_CANON Loc: the Windy City

PatM wrote:

Thank you Brother. My dilemma now is is IS worth the cost difference. Check that out is is IS. I do note your experience in photography per your many posts here.
Have a good weekend 😎🇺🇸

The "magic" of the EF-S 24mm STM is the size & weight, it's like the camera has no lens. Assuming cost is not a factor, the IS decision comes down how low light you want to shoot. Most anyone should be able to shoot at 1/30 without camera shake with a 24mm lens hand-held, even on a crop body. But, if you want to hand-hold down to say 1/10 sec, here's where IS makes a difference at this focal length.

Thank you for the compliment and enjoy the weekend too.

SharpShooter Loc: NorCal

PatM wrote:

Question1: Is there a difference in the end produc... (show quote)

Pat, welcome to the Hog!
If you want to really compare one lens to another, go to Bryan at, "The Digital Picture".
He is the BEST tester for anything Canon.
I personally have never used DXO, it's all lab testing and won't help you much in the real world.
Read what Bryan says and he'll compare one lens to another.
And his comparison charts are optimal, not just numbers gibberish!
That's my recommendation. Good luck!
SS

Architect1776 Loc: In my mind

PatM wrote:

Question1: Is there a difference in the end produc... (show quote)

Without pixel peeping there is no appreciable image difference.
But if you want to do video the EFs is far superior with the STM over USM. USM used to be the standard for all lenses made for quiet operation. But Canon has now developed the STM motor in response to those who do video wanting absolute silence. USM though is faster response time especially for larger heavier lenses. Again for a 24mm no appreciable difference in speed.

larryjphoto Loc: Phoenix

CHG_CANON wrote:

24mm is 24mm on the same camera whether an EF or EF-S. There are minor technical differences, some you noted like filter size and IS. The bigger differences are ruggedness of the build as in size, weight, weather resistance and overall ability to hold up on demanding conditions for the 24L. And then there's the cost ... The 24 EFS is intended to be a small, relatively cheap, sharp, f/2.8 prime.

Well, yes and no. On a crop frame camera a 24mm EF-S Lens is just that, 24mm. On that same camera a EF (full frame) lens has a 1.6x crop factor so it actually shoots as if it were a 38mm EF-S lens. One has to consider the focal length actually needed when choosing to purchase a full frame lens for a crop frame camera body.

rehess Loc: South Bend, Indiana, USA

larryjphoto wrote:

Well, yes and no. On a crop frame camera a 24mm EF-S Lens is just that, 24mm. On that same camera a EF (full frame) lens has a 1.6x crop factor so it actually shoots as if it were a 38mm EF-S lens. One has to consider the focal length actually needed when choosing to purchase a full frame lens for a crop frame camera body.

NO, NO, NO!!!

All 24mm lenses have the same focal length, and all give the same image when used on the same camera!

Both of those lenses give the same image a 38mm lens would give when mounted on a FF camera.

I know this from experience because I was a Canon user at one time and I mixed EF and EF-S lenses.

BebuLamar

larryjphoto wrote:

Well, yes and no. On a crop frame camera a 24mm EF-S Lens is just that, 24mm. On that same camera a EF (full frame) lens has a 1.6x crop factor so it actually shoots as if it were a 38mm EF-S lens. One has to consider the focal length actually needed when choosing to purchase a full frame lens for a crop frame camera body.

This is not only wrong information as pointed out by Rehess but it's irrelevant to the OP question.

Architect1776 Loc: In my mind

BebuLamar wrote:

This is not only wrong information as pointed out by Rehess but it's irrelevant to the OP question.

blackest Loc: Ireland

larryjphoto wrote:

Well, yes and no. On a crop frame camera a 24mm EF-S Lens is just that, 24mm. On that same camera a EF (full frame) lens has a 1.6x crop factor so it actually shoots as if it were a 38mm EF-S lens. One has to consider the focal length actually needed when choosing to purchase a full frame lens for a crop frame camera body.

Oh dear.

The focal length is the focal length.

The difference in recorded image is entirely down to the sizes of the 2 sensors the 'crop' sensor records a smaller area of the image circle. Because of the cropped field of view on the crop sensor the end result is a photo that is similar to one that would be taken using a longer focal length lens on a full frame camera.

The photo in actual fact taken using a crop sensor would look like the central section of the full frames image on a full frame camera using the same lens. If nothing else was changed.

Reinaldokool Loc: San Rafael, CA

CHG_CANON wrote:

24mm is 24mm on the same camera whether an EF or EF-S. There are minor technical differences, some you noted like filter size and IS. The bigger differences are ruggedness of the build as in size, weight, weather resistance and overall ability to hold up on demanding conditions for the 24L. And then there's the cost ... The 24 EFS is intended to be a small, relatively cheap, sharp, f/2.8 prime.

Thanks for stating this. How hard is it to understand that the lens focal length is determined by it's physical dimensions, not whether it will be used on an APS-c sensor or a 35mm sensor. (Or a 4x5 cut film holder for that matter.) The camera marketers used the idea of "a 'crop' lens of 50mm is equal to 35mm on a 'full-frame' camera." No it isn't. Yes, the angle of intercept is (More or less), but the lens is still the same. The aperture is the same, etc.

Rather than all this nonsense, take your lens and use it and see what it will do on your camera.

We get a lot of poor folk with questions like "If I use my new Wizibangi 70mm 3.5 lens on my Gargantuan 4.38G camera will it become 140mm? or just 35mm. And what about the aperture? Will it be 1.75 (Remember he doesn't understand apertures yet) or 7.0? Etc.