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Cons: bokeh shape in FX（24X36mm） corner at f2.0 ，i wanna see a more professional size lens body design to improve this situation.

Pros: blur mania、bokeh master 、creamy blur、vivid color 、solid body、

Summary: it worth it ，I use canon R8 RF system，EARN the money desire for IS camera body.

Cons: It really started showing its age with slow AF and corners that can\'t hold up to 20mpx or higher sensors.

Pros: Cheapest 135mm f2 used with AF.

Summary: It\'s well worth its price, just dont expect the best 26 years later.

Cons: A super small amount purple (foreground) and green fringing (background) in the harshest conditions but it\'s hard to spot.

Pros: Lovely mix of sharp and out of focus renderings. Shoot at ƒ2 all day and enjoy the lovely images and whip-snap AF.

Summary: Outstanding for portraits and event coverage. My copy is over 12 years old and still sings with the latest Canon digital sensors.

Cons: no IS

Pros: image quality, fast, bokeh, everything ...

Summary: one if not the best of my lenses

Cons: -You have to buy a ND-Filter to shoot at f/2.0 in the sunlight. ;-)

Pros: +Sharpness +Contrast +Bokeh

Summary: This is an extraordinary lens. It has the perfect construction. It is "THE MASTERLENS" for outdoor-portraits.

Cons: None

Pros: Excellent Image Quality. Bokeh as butter. Very good build. Value for money

Summary: The Lord among the Red Rings.

Cons: ---------

Pros: Its, very very very sharp!! great contrast and color, bokehlicious..

Summary: the best canon lens ever made!

Cons: None!

Pros: 1) Excellent image quality 2) Razor sharp at f/2 3) The bokeh is simply incredible - smooth as silk

Summary: This is probably the best lens in my kit. It takes excellent pictures, and acts as a great indoor and portrait lens. It might be too long for those with a crop-body, but I like the sharpness and colors that it produces, which are simply incredible.

Cons: Hard to find! I would have appreciate a round shape aperture ring, and wish it was stabilized.

Pros: Everything: build quality, AF speed, sharpness, color, contrast, etc... But the most amazing part of this lens is the outstanding quality of the bokeh, the most beautiful one available, all brand included.

Summary: The perfect lens for portraiture, try it and you will instantly love it!

Cons: Not sealed body. Lack of IS

Pros: IQ. IQ. IQ. IQ. IQ. Amazing wide open! Razor sharp. MARVELOUS bokeh. Amazing colors.

Summary: One of the best lenses in world. Period!

Cons: none

Pros: - fast? smooth and precise focusing - large aperture - sharp from right from 2.0 - perfect smooth bokeh, nice effect of swirling (originating from the rest non-compensated astigmatism)

Summary: great quality for more than reasonable price (real L for probably the lowest L-price)

Cons: At very low light, AF hunts a bit, May be price..

Pros: Fast AF, f/2, Sharp!!!, The AF hit rate is high, Build quality, At about right weight, Beautiful bokeh...

Summary: Superb lens for indoor...

Cons: none

Pros: image and buid quality

Summary: an optical masterpiece. anyway.

Cons: nothing

Pros: image quality

Summary: one of the best lenses available

Cons: ---

Pros: incredible image quality. very fast autofocus

Summary: sharper than all 70-200 lenses (i used the 4 L IS and the 2.8 L IS) - no doubt about it! on my opinion, the best lens from canon when we are taking about image quality.

Cons: none

Pros: superb image quality, bokeh

Summary: one of the best canon lenses