Sigma 18-35mm f/1.8 FX equivalent

Started 9 months ago | Discussions thread
SushiEater Forum Pro • Posts: 11,356
Re: A perfect proof......

bjn70 wrote:

Sounds like you need a z50 to go with that sigma.

That sigma was almost enough to make me buy a d7500 or another d7200. I had a d7200 for a short while with a tamron 17-50 that worked well enough. The sigma didn't promise enough more to warrant the cost, but I always wanted to try it. Indoors wide open was where my tamron disappointed, the sigma would probably have been better but f1.8 would make AF more critical and that could have been the limiting factor.

on d750 I get good enough results with tamron 24-70, considering full equivalence it is mostly equal to the sigma. I also sometimes use 35mm f1.8G but again at f1.8 the AF and limited depth of field can be problematic. I know in my mind that f2.8 on FX is equal to f1.8 on DX but my mind is still irrationally attracted to f1.8.

It only equivalent in DoF but not in the light transmission. F1.8 will allow you to shoot at over a stop faster.

I may someday end up with another DX body but I have to resist buying an arsenal of lenses for it to compete with my FX gear.

All of your FX lenses can be used on crop factor body with narrower field of view. I have 3 FX body and one DX body and lso one DX lens because it allows me to do my job. I have no plans to buy another DX lens unless it is something special like 50-100mm F1.8.

-- hide signature --

If I don't respond to your post after you responded to my post with NEGATIVE remarks that means you are on my Ignore list.
Photography Director for

 SushiEater's gear list:SushiEater's gear list
Nikon D810 Nikon D500 Nikon D5 Nikon AF-S Nikkor 24-120mm F4G ED VR Nikon AF-S Nikkor 28-300mm f/3.5-5.6G ED VR +15 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow