Sigma A 35mm f1.4 vs. 18-35mm f1.8

Started 1 month ago | Discussions thread
EricTheAstroJunkie Contributing Member • Posts: 821
Re: Sigma A 35mm f1.4 vs. 18-35mm f1.8
2

Yup, I've used both a whole lot for astro, IMO the 18-35mm is the best APS-C specific lens for nightscape imaging with a crop sensor camera. It's very sharp, has minimal coma, minimal LoCA, and offers a great/versatile focal range. Normally I am not a big fan of zoom lenses for astro work, but the 18-35mm is the exception. The Art 35mm f1.4 is a good, but not great lens, it has terrible coma and some LoCA and even on an APS-C camera it needs to be stopped down to f2-f2.8 to get really good results. The 18-35mm is weakest at the ends of its focal range, a bit softer at 18mm and 35mm, I found it performed very very well in the 20mm to 30mm range. Here are a variety of shots I've done with the 18-35mm on my D5300, they are all tracked mosaics/panoramas at different focal lengths (up to the 35mm end):

https://flic.kr/p/2iSTFHt

https://flic.kr/p/2iWnMXd

https://flic.kr/p/2iWPMb1

https://flic.kr/p/2j9DWqm

Here's some shots I've done with the Art 35mm, on full frame, so maybe not super applicable for APS-C comparisons:

https://flic.kr/p/29cyo7b

https://flic.kr/p/NsX8fp

https://flic.kr/p/29cyo7b

https://flic.kr/p/2gvUSSa

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