Quote:
Originally Posted by Ian Robinson
I'd go for, and will be going for, when the AUD is back at a respectable level cf the USD , the EF 70-200 f/2.8L (IS model) .... I will be using it for more than just astrophotography.
Only gaining one stop to get the EF 135mm f/2L . It's also a bit smaller 72mm diam cf 77mm diam for the EF 70-200 f/2.8L so you'll loose some the advantage of going from f2.8 to f2 in the light gathering stakes.
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You gain more than one stop. The 135 kicks the hell out of the 70-200.
The 70-200 only really gets sharp from f/4'ish. It's ok at 2.8 but the 135 makes a mockery of it there. In addition the 135 has nicer bokeh and much better colour/saturation/sharpness/contrast at wide apertures.
I do own both lenses and the 70-200 is certainly more convenient but it's not a match for the 135 optically.