From Peter: Worth mentioning: 28mm F3.5 M - not seen one of these before.
Not nearly as common as the 2.8...
Yeah, more versatile and it's sharp from 5.6 on, but check out its distorsion at 24mm. Allegedly, it doesn't matter if you're in nature photography.24mm F2.8 M - tidy but I still prefer the 24-35.
Andre
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