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Old 22-02-2013, 07:24 PM
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strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
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Quote:
Originally Posted by philiphart View Post
Attached image shows the Levels dialog in Photoshop for your full image. The histogram does not touch the black edge and the 'hump' is quite shifted to the right. On a good quality monitor, that should look a little 'grey' even in the darkest parts.

Pushing the black point up 10 is about right, but even up to 20 does not actually clip much data but the image does start to look a little clipped. It might ideally be done with a curves adjustment to spread out the dark end rather than a fairly crude levels adjustment.

Lots of monitors cannot display full range of blacks/whites and so display many images as clipped in either or both ends.

Checkout this page: http://www.imaging-resource.com/ARTS.../CALIBRATE.HTM

On my main monitor I can (just) see every step on both the white and black test charts. But on my crummy netbook screen, I cannot see anything in the bottom half of both test charts.

Phil
Yeh, I knew that but it is hard to leave it looking clipped on my monitor, so I just processed it to look ok to me here

Mike
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