Sigma 12-24mm F4.5-5.6 EX Aspherical DG A-mount lens review by mroctopus
|mroctopus#2700 date: Sep-5-2007|
flare control: 4
|ownership:||I own this lens|
|compared to:||Sigma 10-20|
|positive:||Excellent distortion control|
Above average sharpness
Full Frame readiness
|negative:||Can't use UV filter (Vignetting)|
Bad hood design,
Slow aperture, F4.5-F5.6.
|comment:||One of the reason i paid extra for this lens is the well distortion control as compared to other ultra wide, and the bonus is able to use on future full frame body. |
Sharpness is good at wide open but not excellent. Give it two stop and it give you excellent sharpness. The true strength of this lens come with a very well distortion control, something you can't really get from other lens, no replacement at this moment of writing.
There are some corner softness at wide open but center region remain good sharpness. at F5.6 or beyond, Corner sharpness improve significantly.
The color is very well controlled, excellent saturation and color is more neutral (18-50EX is a bit warm). Contrast is excellent.
Need to be extra careful when walkaround with this lens, better use protective hood to protect the front element as it doesn't allow any UV filter. I can only give 3 for the build due to this reason.