06-08-2017, 09:45 AM
f/1.8 = f/1.8 and remains so, no matter which sensor is used - like it or not.
On Sigma's website they already show the massive vignetting at f/1.8 - so the few millimiters more from APS-C to APS-H will not impact much.
On Sigma's website they already show the massive vignetting at f/1.8 - so the few millimiters more from APS-C to APS-H will not impact much.