topic Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6 in EF & RF Lenses

EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Wed, 12 Jul 2023 12:44:02 GMT

I have been wanting to try a Prime lens and was thinking of grabbing the Canon EF-S 24mm f/2.8 STM Lens to use with my with M50 (I have the Canon adapter for EF/EFS to M) Two questions I have about it is will everything work with it and also I would like t know when I upgrade hopefully in the Spring to a R6 or better with the adapter that allows EF lenses to be used with RF will it allow EF-S lenses to work with the RF mount at well? Is there any problem anyway with auto-focus working with either of the configurations? I found an article here but it was so long and went into things so techniquly that it was far more confusing than helpful in answering the question especially since it also started naming off mounts from other name brands as well. My other options are the Canon EF 50mm f1.8 STM or the Canon EF 50mm f/1.4 USM Lens I would like something that will work well in lower light and shadows. I took some pictures of a band yesterday and they turned out to me horrible. I normally do not film people ofthen but it looks like something I will be doing more of at least in the Summers. I would love an 85mm L series but it is not in the cards at this time, body first then another L series. Oh how do you deal with people becoming camera shy? The band asked me to take pictures and then when I started to every time I pointed the camera in their direction they would move away.

Re: Canon EF-S 24mm f/2.8 STM Lens with M50

jrhoffman75 — Wed, 12 Jul 2023 11:43:14 GMT

EF and EF-S lenses will work on an R series camera. EF-S lenses, since they are designed for crop sensor cameras, will result in a cropped image on a full frame R series camera.
In your bandstand photos your subject is the band, but they are a small part of the image and the camera is exposing for the bandstand. Compounding that is the fact that the bandstand is white.
In order to properly expose the band you need to add some exposure compensation. Try adding +1 and experiment from there.

Re: Canon EF-S 24mm f/2.8 STM Lens with M50

Far-Out-Dude — Wed, 12 Jul 2023 11:57:36 GMT

Thank you. I also feel the bandstand is much to small to allow for decent photos. I did this on a whim, only brought the 15-45 lens, I could have brought better had I known in advance that I was going to do it but just found out about it 2 hrs. before hand and then the GF dropped on me that she wanted to go shopping so everything was rushed. I hate taking pictures when I am rushed. I know I am capable of better. There is another next month and I will bring a better lens or lenses as well as a tripod.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

shadowsports — Wed, 12 Jul 2023 14:12:08 GMT

Greetings far out dude,

If you believe there is a full fame body in your future, I would not invest in a crop series lens.

Here's an example.

The R6 has 20MP's

Put a crop series lens on it, your effective megapixels are now 12.5MP's. The R6 is a great camera, but a crop series lens isn't going to do it justice.

An RF28mm would be a better option in this case.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Wed, 12 Jul 2023 16:27:04 GMT

Would either of the 50 mm that I mentioned be considered a full frame? I honestly thought that the other was a full frame as well being an EF lens even though it's an the EFS Thank you.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Waddizzle — Wed, 12 Jul 2023 20:09:34 GMT

You don’t really want to use EF-S mount lenses on a full frame sensor camera body.

The EF-S lenses will not even mount on a full frame, EF mount DSLR. If you mount a Canon EF-S mount lens on an RF mount body with the Canon mount adapter, then image will cropped, as described above.

I discourage people from adapting EF/EF-S mount lenses to M-Series bodies like the M50 because of the significantly increased current draw over comparable EF-M mount lenses.

If you really need or want a prime for your M50, then the only lens I’d recommend would be the EF-M 22mm f/2 STM. The lens is razor sharp. I have one and it almost never leaves my M3. The M-Series cameras are great pocket cameras, but not so great cameras for general photography.

Otherwise, I would look into a quality EF mount, manual only prime lens for your M50. I’d recommend an utra wide angle lines, something like a Rokinon fully manual, full frame14mm lens. Once you dial in the hyperfocal distance on the focus ring, then everything beyond a couple of feet will be in focus. I have a cinema version of the 14mm lens, and it is fun to use on a mirrorless body because of the zero current drain on the battery.

The Rokinon lenses have had a bad reputation for flawed build quality. I think they use the best lenses for the Cinema versions. I have bought three, me and my two sons, and they have all be razor sharp and flawless.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Waddizzle — Wed, 12 Jul 2023 16:42:07 GMT

Rokinon 14mm T3.1

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Wed, 12 Jul 2023 17:14:31 GMT

I would want something that I could take to the new camera for sure which is why I am asking about EF lenses, otherwise I would like to get the EF-M 32mm lens from all the pictures I have looked at for Canon Prime lenses. I shoot manual for my landscape shots and am getting better with that for wildlife so focusing would not bother me much.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Wed, 12 Jul 2023 17:31:42 GMT

By the way, I like the sepia, I am trying to learn to edit for it.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Wed, 12 Jul 2023 22:53:27 GMT

So is it just EF-S lenses that are cropped on a R6 or would the EF lenses be cropped as well, that is something I still do not understand. Thank you.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

jrhoffman75 — Wed, 12 Jul 2023 23:01:36 GMT

Just EF-S. EF and RF lenses are full frame.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Wed, 12 Jul 2023 23:29:57 GMT

Then why did somebody about say efs would not be full frame if I get an R6 later? I am confused. Sorry, just trying to understand.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

deebatman316 — Wed, 12 Jul 2023 23:40:58 GMT

EF-S or RF-S lenses are NOT designed to cover a full frame image sensor or 35mm Film (36x24). There ONLY designed to cover the APS-C image circle (22.5x15). Note RF-S IS NOT a separate lens mount like EF-S is. All RF-S is, an RF Mount lens that projects an APS-C image circle. Thus a Full Frame camera automatically applies a 1.6x crop to avoid vignetting.

This is what a Full Frame camera sees with an APS-C lens attached. You'll see this same effect if the camera doesn't crop the image.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

jrhoffman75 — Wed, 12 Jul 2023 23:44:23 GMT

@Far-Out-Dude wrote:
Then why did somebody about say efs would not be full frame if I get an R6 later? I am confused. Sorry, just trying to understand.

I think they said that the EF-S lenses with an EF-M adapter will fill the full image sensor on an EOS M camera. The image is still cropped as shown in Rick's graphic. An EF lens is also cropped if mounted to an EOS M camera. The portion captured by the sensor is the same for both lenses; it's just that more is lost with a full frame lens.

When you mount an EF-S lens on an R series camera with the adapter the lens doesn't have a large enough image circle to cover a full frame sensor; if nothing is done there would be a somewhat circular image. The camera crops out everything beyond a 4x3 rectangular image. those pixels are gone.

The EF-R adapter is a tool to allow use of one's existing EF and EF-S lenses. One should not purchase an EF-S lens to use on an R body.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Thu, 13 Jul 2023 01:07:19 GMT

Thanks guys, makes me wonder how my 100-400 l series is going to look on a RF camera now. Trying to improve my gear as I can, trying to take a lot of landscape and wildlife and the more I am told the more confused I become to be perfectly honest. I do thank you for trying, my ADD/ADHD makes me a bit dense sometimes, just bare with me please. Does anyone want to tackle why a R6 with less MP than my M50 is considered better than the M50 other than newer tech?

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

jrhoffman75 — Thu, 13 Jul 2023 02:07:56 GMT

If its a 100-400L it will be better on an R body.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Thu, 13 Jul 2023 02:23:53 GMT

Yes it is.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

krahe — Thu, 13 Jul 2023 22:53:19 GMT

The R6 is a full frame camera, which means it has a much larger sensor. Even if it had the same resolution as the M50, it means that each pixel gets more lens to itself than each pixel on the M50 does. More lens = more light, so the full frame will perform better in low-light conditions than the same lens on an M50. Because the R6 has fewer pixels than the M50, this benefit is extended even more. The larger pixels also make the R6 more forgiving of imperfections in the lens. On the other hand, if you have a very sharp lens and good light, the M50 can capture more detail in a scene compared to an equally sharp lens on the R6 with a focal length that provides the same FOV. But it's not going to be a huge difference, and probably of little practical value, since even 20MP is overkill for most photos unless you're doing some heavy cropping.

Re: EF-S 24mm f/2.8 STM Compatibility with EOS M50 and EOS R6

Far-Out-Dude — Fri, 14 Jul 2023 09:07:49 GMT

Good clear and concise answer, thank you. I have been offered money for my pictures in the past so I want to put out the best images I can which is one of the reasons I am looking to upgrade.