Quote:
Originally Posted by ChrisV
Great lens. I use it at f2.8 with my 450d or asi071 (aps-c). Critical to get the backspacing correct. Was straightforward with the 450d but had to muck around with spacers on the 071 to get rid of CA.
Is it still good with full frame Adam?
|
Hi Chris
I haven’t used it for astro work on Full Frame (my astro camera is APS-C) but for a few portraits of the kids it’s a fantastic performer on the R6… if I can keep the kids still because it’s manual focus
I do have to dial in some micro focus though but that should be easy
Have you got any images to share with this lens of astro stuff at all?
Quote:
Originally Posted by Camelopardalis
Yeah the spacing was correct - I’d tried setting it at a spread of values to get it right, but even then there was bad tilt.
I just put it down to getting a bad one. Potentially great, and I would have paid extra for a good one  …I just don’t have the budget for a Sigma. |
Ha yeah fair enough. Sigma makes some great stuff but this lens has a lot of support in the community for astrophotography. All the kits you can buy to pair a ZWO EAF for instance. Or the 3D printed rings etc as well.
I haven’t seen that for Sigma