EF-S APS-C lens on Full Frame ?

[j1udith]

Hi, I have found myself in a bit of a predicament, I’m in an upgrade process, from Canon 2000D. I had my mind made up on the Canon R7, which will be a great transition with all my current lenses, by just adding the EF to RF Adapter. But now I found an even better deal on the R8. Which I think is a better upgrade thinking long term….BUT, big fat but, I can’t afford a full frame lens at the same time. So here’s my question, sorry for dragging it out. Can I get away with using my cropped sensor lenses for a few months? Has anyone tried it? Here’s a list of my lenses. Canon kit lens 18-55mm, Canon 50mm f/1.8, Canon 60mm f/2.8, Canon 10-18mm f/3.5, Tamron 16-30mm f/3.5, Tamron 70-200mm f/1.8. I will really appreciate your advice, my friend Arty (ChatGPT) reckons I should stick to the R7 until I’m ready for the R8, but I don’t think they ever held a camera. There’s technical and practical, and one sometimes breaks rules… am I about to commit a cardinal sin?

[p4pictures]

R8 is better than R7 in low light thanks to bigger full-frame sensor and less pixels. 

Your Canon EF 50mm f/1.8 is a full-frame lens. Though the 18-55, 60mm f/2.8 Macro and 10-18mm are EF-S crop lenses. You can use these on the mount adapter and this will force your camera to 1.6x crop mode that means you only get 9.3MP images in either JPG or RAW at the maximum. This picture below shows how much the crop is from a full-frame image. Sometimes handy for use with long lenses, but less so for wide-angle.

I don't know about the two Tamron lenses, they might be crop and tell the camera they are crop, or they might be crop and not tell the camera that can result in some huge vignetting. 

I did an experiment some years ago and found some third party lenses did tell the camera they were crop lenses, others didn't. 

https://www.p4pictures.com/2019/06/eos-r-crop-lenses-aps-c/ 

[jrhoffman75]

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@j1udith wrote:

Hi, I have found myself in a bit of a predicament, I’m in an upgrade process, from Canon 2000D. I had my mind made up on the Canon R7, which will be a great transition with all my current lenses, by just adding the EF to RF Adapter. But now I found an even better deal on the R8. Which I think is a better upgrade thinking long term….BUT, big fat but, I can’t afford a full frame lens at the same time. So here’s my question, sorry for dragging it out. Can I get away with using my cropped sensor lenses for a few months? Has anyone tried it? Here’s a list of my lenses. Canon kit lens 18-55mm, Canon 50mm f/1.8, Canon 60mm f/2.8, Canon 10-18mm f/3.5, Tamron 16-30mm f/3.5, Tamron 70-200mm f/1.8. I will really appreciate your advice, my friend Arty (ChatGPT) reckons I should stick to the R7 until I’m ready for the R8, but I don’t think they ever held a camera. There’s technical and practical, and one sometimes breaks rules… am I about to commit a cardinal sin?

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Will you need all your current lenses "for a few months" You could perhaps consider selling your EF-S lenses and purchase an "all around" RF lens for the R8.

[ebiggs1]

IMHO, I would stick with the first plan and buy the R7. You have a tall order of lenses to full fill there, my friend. Your current inventory of lenses will work just fine on the R7. They will not work well on a R8.