binglemybongle
TPF Noob!
Can anyone advise me on any real differences between a Canon and equivalant Sigma AutoFocus lens?
I want to get a faster lens than the standard 28-90mm USM f4-5.6 but Canon originals seem too expensive.
How much difference does the USM make? (Both power and noise level)
How much difference is there optically?
How many people use Sigma and are just as happy with them as Canon?
I want to get a faster lens than the standard 28-90mm USM f4-5.6 but Canon originals seem too expensive.
How much difference does the USM make? (Both power and noise level)
How much difference is there optically?
How many people use Sigma and are just as happy with them as Canon?