Sigma 12-24mm F4.5-5.6 EX Aspherical DG A-mount lens review by Photovisionz
|Photovisionz#8225 date: Nov-10-2010|
flare control: 3
|ownership:||I own this lens|
|compared to:||Sigma 10-20mm|
|price paid:||1135 NZD|
|positive:||fantastic wide angle range|
No CA of any kind
Very little distortion
|negative:||never critically sharp|
Not a fast lens (F4.5 max aperture)
|comment:||I like this lens. It has better sharpness, contrast and colours than the Sigma 10-20 lens for APS-C sensors. Its not as sharp at 24 mm as the Minolta 24-50 - significantly !|
This is an optical compromise - overall sharpness has been evened out which means it never gets critically sharp in the centre but this brings up (the stopped down) corner sharpness to an acceptable level. Its great for architecture but for landscape big enlargements would start to suffer. It WILL be heavy.
Sigma have eliminated CA and minimised linear distortion in an incredibly wide and versatile lens. Its an architecture lens primarily. They have done an excellent job with optical tradeoffs.