topic Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP in EOS DSLR & Mirrorless Cameras

Upgrading dilemma-Rebel t3i to EOS 90d or RP

peteck18 — Mon, 11 May 2020 17:57:12 GMT

HI.

I currently own a Canon Rebel t3i and I want to upgrade. My lenses are all EF-S. I would love to upgrade to the new Canon EOS-RP but I can't afford new glass. I know I can get the adapters that allow the EF-S lenses to fit on the FF body, but I understand that there is a decline in quality and resolution. My other option is to forego the FF option and get the Canon EOS-90D which is APS-C CMOS sensor. That way I can use the lenses I currently own.

So, my question is...what should I do? Is getting the FF and using the adapter a waste of money? Am I foregoing all the other features (like higher ISO, etc)? I don't know when I can upgrade to new lenses.

I should point out that I am an enthusiast, but won't be going the professional route as a photographer.

Thanks in advance,

Peter

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

kvbarkley — Mon, 11 May 2020 18:04:37 GMT

The adapters cause no loss in quality, but they do cause a loss in pixels* since you are limited to the area of the sensor equivalent to a crop frame camera.

* I hesitate to call it "resolution" since you get the same number of pixels per unit area.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

jrhoffman75 — Mon, 11 May 2020 18:38:49 GMT

FWIW, here is summary from cameradecisions-dot-com

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

kvbarkley — Mon, 11 May 2020 18:44:36 GMT

Your chart is incomplete since it does not account for the reduced pixel count when using an EF-S lens.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

peteck18 — Mon, 11 May 2020 19:55:56 GMT

Thanks! Does the reduced pixel number and the croop factor outweigh the benifits of increased IOS and focul points?

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

kvbarkley — Mon, 11 May 2020 20:20:17 GMT

Only you can decide that.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

peteck18 — Mon, 11 May 2020 20:39:51 GMT

Thank you. I was afraid you'd say that. I want someone to tell me what to do!

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

kvbarkley — Mon, 11 May 2020 20:45:20 GMT

Note, that once you start buying RF glass, the point becomes moot.

I would keep the T3i as a backup.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

peteck18 — Mon, 11 May 2020 20:53:37 GMT

Got it. Thanks.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

Waddizzle — Tue, 12 May 2020 01:25:28 GMT

@peteck18 wrote:
HI.

1) I currently own a Canon Rebel t3i and I want to upgrade. My lenses are all EF-S. I would love to upgrade to the new Canon EOS-RP but I can't afford new glass. I know I can get the adapters that allow the EF-S lenses to fit on the FF body, but I understand that there is a decline in quality and resolution.

2) My other option is to forego the FF option and get the Canon EOS-90D which is APS-C CMOS sensor. That way I can use the lenses I currently own.So, my question is...what should I do?

3) Is getting the FF and using the adapter a waste of money? Am I foregoing all the other features (like higher ISO, etc)? I don't know when I can upgrade to new lenses.

4) I should point out that I am an enthusiast, but won't be going the professional route as a photographer.
Thanks in advance,

Peter

The adapters that allow EF/EF-S lenses on the RF mount will have decreased resolution when used with EF-S lense.

1) The decreased resolution is not a fault of the lens, the camera, nor the adapter. The reduced resolution is due to the fact that the EF-S lens will project a smaller image circle that covers APS-C sensor, but which does not cover a FF sensor. There is no drop in "image quality", per se. In fact, I would quickly argue that the RP would give you better IQ, because of its' lower noise and wider dynamic range. Do not get hang your hat on sensor resolution as being the yardstick to measure IQ. It's complicated.

2) As to whether or not you should go for an RF mount camera body, or remain with an EF-S mount body, only you can decide that. With current offerings, I think what it is that you like to shoot, how you use your camera the most, should be the major determine factor.

3) I think Canon has designed the EOS RP to be an upgrade path fro Rebel users into the world of FF cameras. In the past, moving from a Rebel to a FF body was a major undertaking. Now, all you need is a camera mount adapter.

4) As I previously noted, how you intend to use the camera should be the major determining factor in your purchase decision. If you are the casual shooter, not the sports and wildlife shooter, then the EOS RP is probably the better choice. The future of the EF-S mount is limited, and its' sunset seems to be coming into view. On the other hand, the EOS RP is not the ideal choice for any sort of action photography, not even the family dog running around the backyard, IMHO.

The final choice is up to you. I will point out that the best laid plans are subject to change. Are you using your current camera camera the way you had envisioned when you purchased it?

If you think that there is chance that you might come down with the camera-virus, then I would strongly recommend the 90D, which carries a noticeably higher price tag. Otherwise, I would recommend the natural upgrade path to the EOS RP.

There are additional EOS R series bodies in the works. One would thank that there is an APS-C sensor camera in the future of the RF Mount. But, so far all of the cards that Canon has played suggest that the M Series will be the mirrorless future for Canon's APS-C mirrorless bodies, a concept that twists my brain into knots because the M mount and RF mount are completely incompatible, at least so far.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

peteck18 — Tue, 12 May 2020 01:37:40 GMT

Thank you all! Much food for thought!!!

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

shadowsports — Tue, 12 May 2020 03:30:13 GMT

The 90D costs a few hundred more for a reason. Its more camera.

Or you can use the money you saved buying an RP to purchase more battery's. Shots 1300 vs. 250

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

ebiggs1 — Tue, 12 May 2020 14:46:18 GMT

This is such an easy decision. Buy the 90D and don't look back. No matter what anybody says, adapters are just that adapters. They adapt something that isn't designed to work with something else. If nothing else it is another piece of gear you need to carry and keep track of.

Not to mention the 90D is a wonderful camera in its own right. You will love it.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

ebiggs1 — Tue, 12 May 2020 14:47:57 GMT

"The 90D costs a few hundred more for a reason. Its more camera."

+1 Exactly! This is a no brainer.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

CaliforniaDream — Tue, 12 May 2020 15:31:37 GMT

I don't know if you are interested in macro photography but i really like the ability of the 90D to do focus stacking. I have used it a lot. I don't know if the R has the same feature.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

RobertTheFat — Tue, 12 May 2020 19:55:55 GMT

@ebiggs1 wrote:
This is such an easy decision. Buy the 90D and don't look back. No matter what anybody says, adapters are just that adapters. They adapt something that isn't designed to work with something else. If nothing else it is another piece of gear you need to carry and keep track of.

Not to mention the 90D is a wonderful camera in its own right. You will love it.

I agree with Ernie. If you're not going to buy new glass, choose a camera that's designed for the glass you have.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

dino_dsd — Sun, 28 Jun 2020 16:11:53 GMT

Although it is designed for EF-S and EF lenses. Lot of them don't work with 90D. There's a list on internet of lenses that work and ones that don't. There may be a case getting the 90D will require investing in a better, newer and more expensive lenses

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

jrhoffman75 — Sun, 28 Jun 2020 16:32:24 GMT

@dino_dsd wrote:
Although it is designed for EF-S and EF lenses. Lot of them don't work with 90D. There's a list on internet of lenses that work and ones that don't. There may be a case getting the 90D will require investing in a better, newer and more expensive lenses

A little clarification. Any EF or EF-S lens will work with the 90D.

What people are experiencing is that the high pixel count on the 90D is resulting in resolving power that exceeds the resolving power of some of the lower priced Canon kit type lenses.

The same phenomenon would also occur with the high megapixel 5D cameras, but those cameras are generally used with "L" glass.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

CaliforniaDream — Sun, 28 Jun 2020 17:46:37 GMT

@dino_dsd wrote:
Although it is designed for EF-S and EF lenses. Lot of them don't work with 90D. There's a list on internet of lenses that work and ones that don't. There may be a case getting the 90D will require investing in a better, newer and more expensive lenses

As stated above ALL of the EF-S and EF lenses work with the 90D. Photos will as good or better with all of the lenses. Actually I suspect that "dino_dsd" is a 90D troll. All of his/her posts are negitive about the 90D. BTW I have a 90D and love it.

Re: Upgrading dilemma-Rebel t3i to EOS 90d or RP

dino_dsd — Sun, 28 Jun 2020 20:28:20 GMT

I'm not a troll. How quickly you are stamping people. I've got a 90D, and i love it, but faced this issue with soft focus on some lenses, i was totally disappointed at first. I was searching on internet, read a lot of reviews, viewed a lot of posts on you tube. Read a lot about pixel pitch, resolution power and things like that, setting camera, disabling EOS iTR, Canon statement that some old lenses won't give a sharp image, etc. I spent a month searching and learning, and stil searching to improve my shots. But i wrote this as it may help someone. I wish i knew all this information before i bought it, as I would go and test it, see the results and after that make the decision. You can alsow view this video about Canon Responds To 90D Lens Problems https://www.youtube.com/watch?v=cglN96eZO08