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  Reviews by: shooterdad  

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Canon EF 17-40mm f/4L USM

ef17-40_4l_1_
Review Date: Apr 6, 2016 Recommend? yes | Price paid: Not Indicated | Rating: 8 

 
Pros: Full frame, L, center sharpness, build, weather proof, light weight, anti-flare.
Cons:
De-center.

My copy was bought used and cheap ( $300 CAD). So even some de-center issue, no complaint here.

On my 7d mark ii, the lens quite bad at left side of the frame. I have to stop down to f/8 at 17mm, f/5.6 at 20mm to get decent sharpness. In actual use, it's better to down one more stop. I'd expect f/11 on full frame.

But considered the price I paid, I have no complaint.


 
Canon EF 85mm f/1.2L II USM

85II
Review Date: Feb 6, 2015 Recommend? yes | Price paid: Not Indicated | Rating: 10 

 
Pros: Large aperture, Bokeh, Focus Accuracy, Focal length more usable.
Cons:
Open rear element

Here is a review from a happy daddy, who bought the lens mainly shoot against the kid for fun.

I bought it second hand in a great discount. After this purchase, I sold the 85/1.8. Now this is the lens sticking with my 6D camera.

When I used 85/1.8, I felt I still need a flash for the baby when shooting indoor at night with home lighting, because the ISO easily going up to 6400. With this lens, flash is not needed. This is the main reason I keep it. You don't want to use flash against the kid if you shoot at him very often.

Focus is accurate. After MFA, it's very sharp wide open.

With AI Servo mode, there is a hit rate for the moving kid. If he just sitting still, then the One Shot mode with continuous drive would be better. This is not an action lens, Ai Servo mode makes sense for slow moving kid, not for running, not for standing still.

The only thing I have to mention is, the habit is something difficult to change. When you install the lens to the camera, don't do it as you did with other lenses. Hold it over the mount, turn while not in touch, until it accurately matches. Don't put and spin to match.