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Viltrox 13mm for astro, done better? And quite possibly a thumbs up

Started 2 months ago | Discussions thread
Jerry-astro
MOD Jerry-astro Forum Pro • Posts: 19,920
Re: Viltrox 13mm for astro, done better? And quite possibly a thumbs up

grey pilgrim wrote:

GMacF wrote:

Thanks for the update.
Again, if I could get out myself (and get clear skies) I’d be interested to see how the Viltrox performs at f2.8 against the 16-55 @16mm.

A lens I don't have, but I imagine the 16-55 makes a pretty fine astro lens at 16.

From 13 to 16 is a pretty sizable change in FOV. 16 needs a shorter exposure at all the same settings. I didn't do that with my 16 f2.8 here, but should have.

I also wonder how the 16 f1.4 does at f2.8 (another lens I don't have) or even the new 18 f1.4 even though that's fairly tight FOV for astro landscapes.

Doug

Yup, from my own experience, 16mm is pretty long for widefield astro work without some sort of tracking capability.  The length of exposure needed to bring out much in the way of detail at 16mm f/2.8 is almost certainly going to yield some rather unwelcome trailing, I would think (or excess noise at higher ISOs).  So, I'm not so sure that the 16-55 would be all that great for astro, hence I haven't really even tried it as yet.  Concerning the 16mm f/1.4, given the additional speed, it might be fast enough to give you a decent result with a shorter exposure.  Would be interested in seeing a sample from a test.

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Jerry-Astro
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