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EF-S lens in EOS R

Started Sep 9, 2020 | Discussions
Tmjc Regular Member • Posts: 312
Re: EF-S lens in EOS R

Sittatunga wrote:.

The RP doesn't have that feature, but it does have automated focus bracketing, which is missing from the R.

That is such a strange omission, especially from Canon who is normally really big on market segmentation. I really thought they would deliver this feature with a firmware update, it should be pretty easy to do...

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bclaff Forum Pro • Posts: 13,922
Re: EF-S lens in EOS R

Tmjc wrote:

I'm not sure if you miss-typed or if you just have wrong information, but the 15-85 lens is designed for crop sensor cameras only and it's image circle won't cover the full sensor of the RP. ...

True, although Canon (or someone else) could do this:

EF-S to RF TC (Speculation)

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davev8
davev8 Veteran Member • Posts: 4,833
Re: EF-S lens in EOS R

Sittatunga wrote:

thanda wrote:

Mark B. wrote:

quiquae wrote:

thanda wrote:

Oops I did not thought about that. Even with crop-sensor EF-S 15-85mm tend to vignette a bit.

Now, I am thinking either I sell EF-S 15-85mm and go into full-frame or switch to EOS-M cameras for their compactness or EOS xd, xxd or xxxd cameras.

As mentioned earlier, the crop is automatic: the moment you attach an EF-S camera to an EOS R, the body starts shooting at the APS-C crop size of 11.7MP ( 30MP / 1.6^2 ).

It's slightly worse than that. The OP is looking at the RP, which has a resolution of 26mp so with the crop will be left with 10.1mp.

I am dropping the idea of using EF-S lens altogether and use EF and OM Zuiko lenses instead.
But I did not read or know anything about using of manual focus lenses either with R or Rp. If Rp does not support then I will pick R (a bit pricey for what I do nevertheless)

I bought the R for the magic focus aid, extra 4 megapixels, improved dynamic range, dust cover over the sensor while changing lenses, better construction, EVF and bigger battery.

Both cameras do manual focus peaking or magnification of the focus spot (5x or 10x but not in conjunction with focus peaking).

i dont know why canon dropped that ...my M5 has peaking in 10X..and it can be useful  if i use the LCD without my glasses

I use the much maligned M-Fn bar to control the magnification and toggle the electronic level and histogram, so I don't need to lock it or worry about accidentally altering the exposure with it. The match triangles focus aid is wonderful manually focussing RF and EF lenses and adapted lenses with chipped adapters. The RP doesn't have that feature, but it does have automatic focus bracketing, which is missing from the R.

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Bob Janes
Bob Janes Veteran Member • Posts: 5,329
Re: EF-S lens in EOS R

thanda wrote:

Oops I did not thought about that. Even with crop-sensor EF-S 15-85mm tend to vignette a bit.

Now, I am thinking either I sell EF-S 15-85mm and go into full-frame or switch to EOS-M cameras for their compactness or EOS xd, xxd or xxxd cameras.

You might be OK.

I've used some APS-C kit lenses on my old Minolta film cameras and found that the image circle was usually only visible at the short end (in the case of an 18-70 Minolta APS-C lens, there were no dard corners from 35-70mm) - might well be the same with the EF-S, but you will only know if your R does not automatically go into crop mode (or if it gives a choice in the menus).

The 15-85 might not perform brilliantly, as this is outside the spec it was designed for, but the results might be interesting all the same...

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tkbslc Forum Pro • Posts: 17,522
Like an older APS-C camera

It's just like shooting on an old APS-C sensor but with modern mirrorless features.   You'll be at 11MP, which is about like a 40D or 450D with a little more DR.   So certainly capable of great images, but quite a bit lower resolution that modern APS-c.   You'll be a little disappointed every time you take a picture knowing that you could have twice the detail if you had a FF lens.

For video it is actually an asset because the 4K has a very high crop factor and the 15mm starting point means you can still have wide angle.

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