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13-01-10, 03:34 PM
Join Date: Jul 2009
Originally Posted by
So could you tell me if my sweetspot is 325mm will it be better to crop and get a sharper picture or shoot at400 with no crop?
If you want to utilise the sweetspot of your lens, whether it be in terms of focal length or aperture, for the maximum quality that this lens is capable of then go for it. Anything else is a compromise - but such is life. The 50D gives you 15.1MP to play with so it's up to you to decide how many you want to throw away by cropping and this will, or should, be determined by what you intend to do with the image i.e. a huge wall poster or a postage stamp sized print.
You might want to have a read on this flickr group regarding the 100-400mm, after all they that actually use it are often the best sources for feedback.
No, I didn't use any noise reduction on your image in CS4 but instead the community edition of Noiseware available here.
I really think you should start a new thread if you've got any further questions regarding the Robin or the lens in question. We've both managed to stray away from this threads title of 'histograms' which will no doubt serve to confuse other members.
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