Sigma 18-35 Astro Coma

[orangeframestudio]

Just unpacked the lens and tested before the clouds rolled in too thick.

Impressed with the coma disappearing at 2.8, and nice round stars... looking forward to this making a great nightscape astro lens on top of all its other uses.... and happy to get it before the price increase.

Full shot, 2.8, iso 3200 at 18mm 8 secs


Top corner at 2.8

Top corner at 1.8

 

[Lemaildetom]

Looks pretty good indeed!
It a lens for crop sensor isn't it? I find 18mm on crop start to be a bit too long for astro.
I use myself 20mm on FF and before that 12mm on crop.

 

[orangeframestudio]

Yeah, appreciate I'll need to stitch a couple of shots together to get the 12mm equivalent. I have a tokina 11-16 also but the coma isn't great on that and it's only 2.8.
Not a single clear night to try it out properly yet.