English Photographer - Pentax 31mm f1.8 vs Sigma 35mm f1.4 Art Lenses Compared

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4 lenses compared at 35mm; Sigma 35mm f1.4 Art lens vs Pentax 31mm f1.8 limited lens vs 20-35mm vs 28-105mm.

Taken with the Pentax K1 on a tripod, f8, 1/250s for every shot. Outside so the light varies slightly between shots. Shots are labelled with the lens used. I've uploaded the full DNG files; personal, pixel peeping use only please.

https://drive.google.com/folderview?i...

Here are my conclusions gentlemen;

Sigma 35mm f1.4 - The sharpest lens across the frame and my preference overall. There's a big difference between f1.8 and f1.4 too so the lens gives more opportunities. Slightly cooler rendering. Quiet autofocus but not accurate.

Pentax 31mm - Similar sharpness but much smaller and lighter than the 35mm. Noisy autofocus and doesn't seem as well sealed as the sigma. Severe vignetting wide open. Smaller filters.

Pentax 28-105mm - I love this lens. It's a really good move from Pentax to provide a sharp, light, compact, weather sealed lens for a bargain price. Almost identical sharpness to the primes.

Pentax 20-35mm - This is a great lens too because it's so small and light for the focal length. It's not quite as sharp as the others and is warmer too, but it makes an excellent travel wide angle zoom. It's really so light.

If I had to choose one lens, it would be the 28-105mm. Otherwise I'd have the 35mm because of the better image quality. If I had to recommend one, I'd choose the Pentax 31mm because the image quality is almost as good but it's smaller and lighter.

Ben

www.shot.click


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