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I recently bought a Sigma 30mm f/1.4 to accompany my Nikon D60.

At first I was disappointed with some severe issues with front focus. It was really bad since I could see it even at long range photos. But, the local Sigma service point did it’s best and tweaked the sigma to my body. The results was astonishing. A strange thing is that Sigma overexposes about 0.7EV. But you can fix that (if you want) quite easily by setting a -0.7EV on your camera.

On the comparison there are various shots from f/1.4 to f/16 and all are compared to the Nikkor 18-55 VR. The last, is the normal kit lens that comes with the D60 and it’s quite good.

You can see below the Original image (scaled) taken at f/8 with the Sigma (EV-0.7).

Ready to see the tests ? Read on…

Olympus E-3 with Sigma 24mm f/1.8 vs Olympus E-410 w/ DZ 14-45 f3.5-f5.6 @ ISO 100, f/5.6, Natural Settings (Same settings for focusing, metering etc).

Olympus E-3 with Sigma AF 24mm f/1.8 EX DG Aspherical — FRONT/BACK
FOCUS TEST @ f1.8

Aperture Tests on SIGMA AF EXDG 24mm f/1.8 (100% Crop) with Olympus E-3 (ISO 100, Custom WB)

Equipment: Olympus E-3, Sigma 24mm f1,8.

Examples at various ISO, f/5.6 (samples are 100% crops, click for resize)

The model – Michelin Bibendum

ISO 100, Noise Filter OFF

ISO 100, Noise Filter LOW

ISO 100, Noise Filter HIGH

ISO 200, Noise Filter OFF

ISO 200, Noise Filter LOW

ISO 200, Noise Filter HIGH

ISO 400, Noise Filter OFF

ISO 400, Noise Filter LOW

ISO 400, Noise Filter HIGH

ISO 800, Noise Filter OFF

ISO 800, Noise Filter LOW

ISO 800, Noise Filter HIGH

ISO 1600, Noise Filter OFF

ISO 1600, Noise Filter LOW

ISO 1600, Noise Filter HIGH

ISO 3200, Noise Filter OFF

ISO 3200, Noise Filter LOW

ISO 3200, Noise Filter HIGH