RiceHigh's Pentax Blog: Sigma Art 18-35/1.8 K-mount Version Field Tested with Full Samples

Wednesday, July 30, 2014

Sigma Art 18-35/1.8 K-mount Version Field Tested with Full Samples

http://www.yaotomi.co.jp/blog/used/2014/06/sigma-18-35mm-f18-dc-hsm--art--review.html
(in Japanese)

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foton · 555 weeks ago

Optically, excellent lens. On the other hand, expensive for what it is, because it is big, heavy, and only for the sake of having a large aperture, which is not anymore of so high importance for an, essentially, wide angle lens.

3 replies · active 555 weeks ago

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Bukaj · 555 weeks ago

A hypothetical good quality 18mm F1.8, 24mm F1.8 and 35mm F1.8 primes bought together would be more expensive:-)

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Rikohh · 555 weeks ago

"not anymore of so high importance for an, essentially, wide angle lens."

Not anymore? What do mean by that?

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foton · 555 weeks ago

I mean that today's cameras have very good high ISO performance, so the amount of light getting through the lens is not a big issue. Also, large aperture here would not help to decrease the depth of field so much, because wide angle lenses are not very capable of producing a shallow depth of field anyway. Put simply, one pays for the large aperture which is rarely needed for such a lens.