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Which 300mm lens?
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PostPosted: Sun Jul 17, 2011 8:51 pm    Post subject: Reply with quote
martyn_bannister wrote:
As I understand it, and that means I'm probably wrong, a 100% crop of an image means a 1:1 ratio between the image pixels and the pixels in the monitor you are viewing it on. Thus, a 1280 x 1024 monitor displays a 1280 x 1024 picture at 100%.

A 100% crop of a 3072x2048 image means zooming in until you see a 1280 x 1024 crop of it. Of course, at the same zoom level, you can then take a 640x480 section of that image (or any other convenient size) and that is also a 100% crop !!!! Gawd, no wonder it's confusing!

A lot simpler to zoom until photoshop tells you it's 100% and then take a crop of that!

Of course, all this means that a 100% crop to one person, is only a 100% crop to another, if they have the same monitor resolution Twisted Evil


Aye, that sums it up, I just zoomed in in photoshop told me it was 100% then cropped it, this is always how I do my 100% crops.

I would love to hear some suggestions on how to PP that moon shot to improve it, I didn't get very far.


PostPosted: Mon Jul 18, 2011 2:47 pm    Post subject: Reply with quote
Ian: It sounds like you have the image maximized when you zoom and crop. The crop must be a certain size portion of that image that you can't accurately crop from a maximized image, so you must have the image in the window size that it is when originally opened. Then zoom to 100%, reposition the image inside the allowable frame and then crop to the borders of that frame. See here as an example - paying attention to the navigation window in upper right corner.

Sorry if this is a hijack - not intended, but trying to bring understanding and closure to this technique.
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