Quote:
Originally Posted by dannat
having just recently bought my first canon - why is the most useful lens for taking astro shots at the medium end..i am thinking between 50mm(which is a common size for widefields) & 500mm - where most refractors start to kick in
i find it strange the 200mm canon prime goes for apparently less than the 70-200mm..is the zoom that good?
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I can see you're on a slippery slope Daniel!
You are going to need to start looking at MTF charts and lens comparisons soon.
So I'll start you off!
This is a great site to compare lens performance side by side, in this case the 200mm prime v's the 70-200 IS zoom...
http://www.the-digital-picture.com/R...mp=4&APIComp=0
L-R mouse over the image to compare the 2 lenses.
The nifty 50 (Canon 50mm f1.8) stopped down is a great budget prime but my 70-200mm f4L IS is my widefield weapon of choice (The non-IS version is equally as good and way cheaper)
I've got a 24-70 f2.8L which I've yet to really give a good go under the stars.
Doug
