First look: Canon RF 50mm f/1.2L USM Image Quality

Quackator

EOS RP
Jul 19, 2011
301
116
If the back focus distances allows an EF version: Yes please, prefer that.
Why? Simple: Being able to use the rear drop in filter adapter for either C-PL or Vari-ND.

That is the biggest problem I see in using native R glass.
The gave us the brillant rear filter adapter but it isn't in the full R glass.
 

Yasko

EOS 80D
Jun 9, 2017
116
18
With the mirror box gone, is there still clipping of bokeh balls at the edges of the frame?
I guess so, yes. There is always an aperture (which is not the sensor) and when you go through a circular aperture with an inclination it should not be circular anymore. But it‘s hard to imagine right now...
I am not sure if the mirrorbox was clipping... I guess it was more so the lens itself.
 

Yasko

EOS 80D
Jun 9, 2017
116
18
If the back focus distances allows an EF version: Yes please, prefer that.
Why? Simple: Being able to use the rear drop in filter adapter for either C-PL or Vari-ND.

That is the biggest problem I see in using native R glass.
The gave us the brillant rear filter adapter but it isn't in the full R glass.
Well... you can use older glass that is inhibited in its own way with a nice rear filter adapter, or you can use newer R glass that is often sharper and even faster with comparable or less weight... so there is a trade off you have to make. Longer lenses don‘t profit so much, perhaps this is why we see these new long tele EF lenses, especially there the filters come in very handy.
 

mb66energy

EOS 6D MK II
Dec 18, 2011
1,333
229
Germany
www.MichaelBockhorst.de
After seeing images on dpreview and now the review of TDP I am lusting for this lens and maybe I would buy it for my M50 because it would be a very flexible FL ( 80mm effectively on APS-C ) for me. The only pity: The lens cannot be adapted on the M50 now and an adaptor - if possible - would be very very complicated / expensive if you have only 2mm flange distance.

About some remarks about OTUS - RF 1.2 50 comparison: Not easy if you compare different lenses while having different cameras. The Canon lens seems at least in the same IQ department while having 0.5 f-stops brighter max aperture & AF. Just the AF with DPAF sensors will come in handy @ f/1.2 ... f/2 to nail focus and to use the potential of that lens!
 

MartinF.

EOS 6D, 5D and some good EF lenses. DPP4 user
Feb 2, 2016
71
47
Denmark
Nah. Not even close. 10 years? 15? Not even close.
I sure hope you are right, that Canon will maintain the EF line for years to come. The already released EF lenses this fall may show that - but even more interesting will be to follow the 2019 - 2020 releases of new EF lenses and EF mount EOS cameraes. Canon has the power to maintain both RF and EF for years, and at least until the RF line is more "complete" - but when that time comes witin the next 8-10 years - will EF and DSLR then be continued? - I hope so.
After my first disappointment on Canon not bringing native EF mount to the future of mirrorless, I (think) i have deiced that my next buy will be the 24-70 f/2.8 mkII when i can afford it. And in 3 - 5 years from now, another EOS DSLR replacement from my current and beloved 6D. That will keep me going with EF lenses and cameras till I am in my middle or late 60's. That will do... - I think... ;-)
 

padam

EOS 7D MK II
Aug 26, 2015
686
289
I think the EF 50/1.2 would do a bit better if it was corrected for focus shift, it could be slightly out of focus as it is being stepped down.
Or does he manually re-focus for every shot?

I know that RF lenses always open up to their widest aperture when focusing for stills in AF-S mode.
I guess EF lenses in liveview don't change the aperture to focus so no focus shift?
 

YuengLinger

EOS 5D MK IV
Dec 20, 2012
2,792
991
Southeastern USA
Indeed. I think the new EF 400 and 600 L III lenses are a pretty solid statement (at $12 and $13K each, respectively) that EF isn't going to be obsolete any time soon.
Yes, because Canon sells millions of such lenses. These big whites address a need of a tiny fraction of Canon's top tier customers, namely working sports and wildlife professionals and fit, wealthy retirees. The new versions probably incorporate necessary technology to work optimally with the RF adapter.
 
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fullstop

EOS 6D MK II
Apr 23, 2018
1,088
153
Yes, because Canon sells millions of such lenses. These big whites address a need of a tiny fraction of Canon's top tier customers, namely working sports and wildlife professionals and fit, wealthy retirees. The new versions probably incorporate necessary technology to work optimally with the RF adapter.
exactly. And those 2 were the last big whites for an update. We will not see many new/updated EF lenses for quite a while. Now it's "RF time" at Canon. :)
 

Josh Leavitt

EOS T7i
Aug 19, 2018
96
107
I think the only thing the RF 50mm F/1.2L USM is lacking at this point is a high resolution EOS R body to equip it with. 30MP on the EOS R is no slouch, but an EOS Rs(R) without the AA filter and a 50-64MP sensor would really allow this lens to show its true colors.
 

nitram

EOS M50
Jun 14, 2018
39
16
Switzerland
exactly. And those 2 were the last big whites for an update. We will not see many new/updated EF lenses for quite a while. Now it's "RF time" at Canon. :)
Just to jump in for a moment, I had thought that the other two big whites due for the refresh were the 300 f/2.8 and the 500 f/4. As per the rumors posted here, the 400 and the 600 would come out slightly earlier than the other two. But I believe you are right that there won't be ANY additional EF lenses coming. The existing ones are pretty great. If phototogs want the latest and greatest, they'll have to adopt the new system. Still, the existing lenses should continue to transmit light just as well as they did before the RF release :)
 

nitram

EOS M50
Jun 14, 2018
39
16
Switzerland
I think the EF 50/1.2 would do a bit better if it was corrected for focus shift, it could be slightly out of focus as it is being stepped down.
Or does he manually re-focus for every shot?

I know that RF lenses always open up to their widest aperture when focusing for stills in AF-S mode.
I guess EF lenses in liveview don't change the aperture to focus so no focus shift?
Wait I don't quite understand - are you saying that EF lenses shift focus when at different apertures? That would be the first I have ever heard of that but I am always open to learn something new about lens design...
 

tron

EOS 5D SR
Nov 8, 2011
4,398
638
If they want they can make a new EF50mm 1.2L II with a similar IQ to the RF version. I base that on the excellent EF35mm 1.4L II and on EF85 1.4L IS.
 
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DJL329

EOS 7D MK II
Aug 26, 2010
575
25
A straight EF version would be even better! I know the adapter thing was a joke, but I wonder if Canon is really only going to make an RF version of this lens.
Glad to see at least one person realized I was being facetious!
 

David Littleboy

EOS M50
Mar 7, 2015
26
6
I went straight to comparing it to the Otus 55mm. The Otus stills beat it as far as sharpness on those test charts goes, but not by much. So, at half the price, the Canon is a steal!
Hmm. The weight and price are seriously not acceptable here. The "modern 50mm" game has gotten completely out of hand.

Meanwhile, at half the weight and half the price of this new Canon, the Voightlander (Cosina) 40/1.2 Nokton is looking very reasonable.
 

jd7

EOS 7D MK II
Feb 3, 2013
782
151
Had a look at the comparison between the new RF50 1.2 and the Sigma 50 Art. To my eyes, it seems the Sigma is performing tiny bit better.
I thought maybe the RF 50 was a touch in front when you set them both to f/1.4, but either way they definitely seem close. The prices aren't close though.