Quote:
Originally Posted by dugnsuz
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This looks very acceptable, but.. image was taken with lens stopped down to f6.3, so it is not easy to judge... On first occasion (when Melbourne weather permits) I will try my Pentacon 50mm with f6.3 to compare the quality of star images.
What I would really like to see here (or anywhere else) is the simple study of various lenses. cheap and more expensive, with images of reach starfields with some bright stars in the centre and at corners (this milky way is a good test target) taken at the same f settings, so that people can compare apples with apples and pears with pears.
The very good example (but not for what we are talking about here) is this website suggested by mymoon:
http://www.samirkharusi.net/televue_canon.html
Unfortunately, most of the time the test reports on lenses (especially if done by non astro-photographers) are very vague, using colourful (poetic even) language with not much real hard data in them.
Also some people belong to Canon club, some to Nikon.. or whatever. Sometimes a lot of money is paid for the specific gear and then it is not easy to admit that almost the same if not better results could have been achieved with significantly lesser investment... the objectivity could be lost very easily if we do not standardize the test method.