LensTip.com

Lens review

Canon EF 135 mm f/2L USM

3 October 2011
Arkadiusz Olech

7. Coma, astigmatism and bokeh

The coma is corrected splendidly. Even at the maximum relative aperture a point-like image of a diode remains dot-shaped; it looks so in the corner of the APS-C sensor and, what’s really worth emphasizing here, in the corner of full frame as well. The tested lens should be highly praised in this category.

Canon EF 135 mm f/2L USM - Coma, astigmatism and bokeh

The correction of astigmatism can be described in similar way. Its level was determined as 1.8% which is a negligible value.


Please Support Us

If you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

The photos below show blurry images of a point-like diode. The spread of light is very even; you can also notice slight deviations from a circular cross section. If you want to pick holes you can write that it’s a shame the producer didn’t use nine diaphragm blades.

Canon EF 135 mm f/2L USM - Coma, astigmatism and bokeh