Lens review
2009-11-27
Canon EF 100 mm f/2.8 L Macro IS USM
7. Coma and astigmatism
The coma correction in the tested lens is exemplary. It’s influence on the picture quality is minimal and, what’s more important, it is true for APS-C corner and for full frame corner too. The crops below show it perfectly.
Astigmatism, like coma, is imperceptible. On the APS-C sensor the average difference between vertical and horizontal MTF50 function values amounted to only 4.0% and 4.9% on the full frame sensor. Both these results are low and our lens assessment in this category is as positive as it can be.
