View Single Post
  #85  
Old 12-03-2012, 02:40 PM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,131
Quote:
Originally Posted by Martin Pugh View Post
...., and much to my surprise the excessive off axis aberrations were back - with the lens at f4.5. So what I achieved with the ST8300 did not replicate on the DSLR.

Anyway - one lesson - I think buying anything less than a full frame DSLR for astrophotography is a waste of money and time.

cheers
Martin
No surprises here.
The tilt is not in the lens it is at ST8300 sensor.

Full frame lenses will perform better on smaller sensors. though - because of obvious reasons (smaller sensor, aberrations stay outside the corners). However, they will also be much more expensive. Which means, DSLRs with smaller sensor (not full frame !! ) will not capture those aberrations.

Last edited by bojan; 12-03-2012 at 03:09 PM.
Reply With Quote