| Joined: | Thu Apr 19th, 2012 |
| Location: | United Kingdom |
| Posts: | 4424 |
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Even for star shots and astrophotography people seem to recommend using a fast wide angle lens e.g. 20-35mm and if possible a fast aperture such as f2.0 or f2.8 but used at f4.
Yes I have seen that before and never asked why?
I naively assumed using a long lens would get a tighter field of view requiring lens post cropping....which for other photography is preferred when you cannot get closer to the subject.
Maybe with stars, the distances involved are immaterial?
But I would have thought pictorially if the noise /grain is too large (relative to the 'light dots') as a result of enlarging/ cropping ...it would be better to do less cropping and use long lens???
Or perhaps with median stacking etc noise size becomes irrelevant?
As I say...don't understand the 50mm logic.
Last edited on Sat Dec 12th, 2015 17:48 by Eric
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Eric