Quote:
Originally Posted by gregbradley
Another fine widefield 5DH image. Is there any advantage from using a 5D Mk11 over a 5DH do you think?
Your Canon lens does not seem to have any chromatic aberration. I just got a Pentax 67 300mm F4 and a Pentax 67 165mm F2.8 for my Proline.
I am getting an adapter made up so I can use it. I expect a certain amount of chromatic aberration from it so I'll probably get a UV filter and focus at every colour filter change.
Greg.
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As far as I know Greg the 5D MII has better signal to noise than the classic 5D even though the pixels are smaller. From what I have seen I would say better than a factor of two. Canon go to a lot of trouble to make their sensors from Ultra Pure Silicon to minimise hot pixels. The on chip electronics are also better.
In my opinion there is only one lens better on our planet than the Canon 300mm F2.8L (non IS) and that is the Canon 200mm F1.8L. They both only have slight astigmatism on very bright stars at f/2.8 & F1.8 at the corners. At f/3.5 the 300mm is almost perfect to the corners.
Bert