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

CanonFanBoy

EOS 5D SR
Jan 28, 2015
4,150
1,710
Irving, Texas
I was a little concerned that only 35mm difference between this and the 85mm didn't justify having both. I'm so happy I was wrong! Very different uses and feel, both great, from my experience. Enjoy!
I'm interested to see how that feels. I never pay attention to what focal length I am at with the zooms. I have some old 50mm - 58mm vintage MF lenses, but rarely have I used them. In fact, there's a friend in Chicago that has about 20 of my old lenses he's trying out. I'm hoping he buys the whole box.
 
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mkamelg

I'm New Here
Feb 1, 2015
14
7
Poland
I bought it. I still have also the EF 50mm f/1.2L USM lens so I did a little comparison:

https://1drv.ms/u/s!Asmd3i9rvqAblxG0b-pMSWuit8wl?e=1xnuhq

These are my first photos taken with this lens:


Do I have any conclusions?

Stay away from Christmas lighting, where LEDs give cold light. Why? Becaue in this case this lens generates horrible onion bokeh in full de-focus mode.


Giant onion Christmas tree:

https://flic.kr/p/2hVpAfA
I know, I know, it's a similar story like with Zeiss Otus lenses http://www.verybiglobo.com/zeiss-milvus-851-4-vs-zeiss-otus-851-4-vs-zeiss-planar-851-4-comparative-lens-review-2/7/ so we should be happy, right?

In my opinion, the weakest point of this lens is its housing. Why?

Look at your copy of the lens. In my copy you can see the joining of two fragments of the housing (this is probably one of the places where the material is welded, second two are located on both sides of the switches). When you squeeze the casing in a specific way (as shown in one of the pictures posted below), you will hear a click type sound.

I hope this is not a factory defect. :unsure: Do you have joining of two fragments of the housing in the same place as me, different place or you don't have it at all?

Generally the part of the housing below the MF ring is very flexible and bends under stronger finger pressure. In the EF 50mm f/1.2L USM lens housing is definitely more solid.

 

CanonFanBoy

EOS 5D SR
Jan 28, 2015
4,150
1,710
Irving, Texas
I bought it. I still have also the EF 50mm f/1.2L USM lens so I did a little comparison:

https://1drv.ms/u/s!Asmd3i9rvqAblxG0b-pMSWuit8wl?e=1xnuhq

These are my first photos taken with this lens:


Do I have any conclusions?

Stay away from Christmas lighting, where LEDs give cold light. Why? Becaue in this case this lens generates horrible onion bokeh in full de-focus mode.


Giant onion Christmas tree:

https://flic.kr/p/2hVpAfA
I know, I know, it's a similar story like with Zeiss Otus lenses http://www.verybiglobo.com/zeiss-milvus-851-4-vs-zeiss-otus-851-4-vs-zeiss-planar-851-4-comparative-lens-review-2/7/ so we should be happy, right?

In my opinion, the weakest point of this lens is its housing. Why?

Look at your copy of the lens. In my copy you can see the joining of two fragments of the housing (this is probably one of the places where the material is welded, second two are located on both sides of the switches). When you squeeze the casing in a specific way (as shown in one of the pictures posted below), you will hear a click type sound.

I hope this is not a factory defect. :unsure: Do you have joining of two fragments of the housing in the same place as me, different place or you don't have it at all?

Generally the part of the housing below the MF ring is very flexible and bends under stronger finger pressure. In the EF 50mm f/1.2L USM lens housing is definitely more solid.

The flex behind the focus ring doesn't bother me. I do not have that line on my housing. I would think the part is molded and not joined there.

I see what you are saying about the onion bokeh on the tree, but the telling part for me is that I don't see it in the other lights. I have three models to shoot on Sunday night in Dallas. I will pay close attention to see whether or not I get the onion bokeh, but it really doesn't bother me either. Most of my shooting is during the day. ;) I am very happy with all three lenses. I'll post photos from Sunday night here. I'll be using the 50mm exclusively.

Still waiting for a 135mm or 70-135mm f/2 zoom. No rush though. I'm all tapped out for the next year or two. I'm 56, so these will be the last lenses I buy in my life should the RF mount survive the next 20+ years. :)
 

mkamelg

I'm New Here
Feb 1, 2015
14
7
Poland
"I do not have that line on my housing."

Thank you so much for your quick reply. After the weekend I send the lens back to the store where I bought it for refund.
 
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YuengLinger

EOS 5D MK IV
Dec 20, 2012
2,626
746
Southeastern USA
I bought it. I still have also the EF 50mm f/1.2L USM lens so I did a little comparison:

https://1drv.ms/u/s!Asmd3i9rvqAblxG0b-pMSWuit8wl?e=1xnuhq

These are my first photos taken with this lens:


Do I have any conclusions?

Stay away from Christmas lighting, where LEDs give cold light. Why? Becaue in this case this lens generates horrible onion bokeh in full de-focus mode.


Giant onion Christmas tree:

https://flic.kr/p/2hVpAfA
I know, I know, it's a similar story like with Zeiss Otus lenses http://www.verybiglobo.com/zeiss-milvus-851-4-vs-zeiss-otus-851-4-vs-zeiss-planar-851-4-comparative-lens-review-2/7/ so we should be happy, right?

In my opinion, the weakest point of this lens is its housing. Why?

Look at your copy of the lens. In my copy you can see the joining of two fragments of the housing (this is probably one of the places where the material is welded, second two are located on both sides of the switches). When you squeeze the casing in a specific way (as shown in one of the pictures posted below), you will hear a click type sound.

I hope this is not a factory defect. :unsure: Do you have joining of two fragments of the housing in the same place as me, different place or you don't have it at all?

Generally the part of the housing below the MF ring is very flexible and bends under stronger finger pressure. In the EF 50mm f/1.2L USM lens housing is definitely more solid.
Regarding the lens construction, thanks for the heads up. I just checked mine, the issue does not exist at all. Feels like one very solid tube, and it seats firmly in the mount.

Did you get yours new? From an authorized dealer? Was it delivered to you? And have you though of sending it to Canon for inspection? *

As for the onion-ring with certain LED lights in the distance, I haven't tried this lens with such a background, though the RF 85mm is clean and smooth. I might have to cave to family wishes and get a Christmas tree after all--just to try. But I can tell you natural light bokeh is buttery smooth.

I remember past discussions and reading online that onion ring can be caused by a lens, by the light source, and by a combination of both. I'm curious how many other lights catch your attention like these.

Ok, boys, I'll post my own bokeh-balls ASAP!

*Just saw we posted simultaneously. Glad you decided to send yours back. Sounded odd! But I'm still curious about my own bokeh-balls now, and will post 'em soon!