Are there any users on this forum that use the a57 for astrophotography? I have a couple of questions I am looking to get answers to:
1. I am a beginner as far as astrophotography goes - only previous attempt was a long exposure of the Milky way from Hawai'i - but it's one of the reasons I took up photography. I have a bit more experience with DSLR photography. I had been waiting till Christmas for the 70-200 f/2.8 and then heard that there's going to be v2 of that lens soon and so didn't buy the original G series one. However, I am beginning to consider the Tamron 70-200 f/2.8 USM which has very positive reviews - the difference between Sony and Tamron is $500 at present and perhaps more with the upcoming lens. Would those $500 (plus a bit) be better spent on getting a decent mount for astrophotography?
2. Can you suggest a good mount plus T ring and adapter that you use with the a57? I've heard good things about the CG-5 but am sure there would be others too.
3. Finally, do you know of good areas around NYC where I can practice astrophotography?
Thanks in advance for your help.
Thanks for your interest in astrophotography - welcome to the group! I have no experience with the a57, nor have I seen any results with that camera. But I have little doubt that its capable of some fine results. If its anything like my NEX-5N, it should do fine. One of the principal requirements is that noise be well-controlled at higher ISO. Sony seems to do well in that regard. I believe it makes at least some of the sensors for Nikon. Also the ability to go beyond 30-second exposures is helpful.
I'll try to do my best in answering your questions. Perhaps some others will have some more helpful suggestions:
Here's wishing you success in your astrophotography!