@Ray...
I don't think you fully understand the purpose/function of the histogram,
maybe this will help. The histogram is a reflection of the image based on
the blacks & whites in the image but it is not something that you can change
directly. When you make changes to the image those changes are reflected in
the image.
I did not view the image but if there is some clipping it means there is an
over abundance of black or white in the photo & that means your camera
settings were off and you either had too much light on the some part of the
photo or you did not have enough light on part of the photo. The most
effective use of the histogram (to me) comes in the image capture/creation
phase, especially in stills & studio work however it has some benefits in
the editing process as well. There are a lot of tut's on this subject out
there & I would recommend viewing a few to determine how you can use it
going forward. If you want to address the clipping issue now, I would
recommend the curves tool or the levels tool in photoshop.
Dallas P. Allbritton
Writing With Light Photography Services
http://www.wwlphotos.com
From: Adobe_Photoshop_Techniques@yahoogroups.com
[mailto:Adobe_Photoshop_Techniques@yahoogroups.com] On Behalf Of Ray Leeson
Sent: Wednesday, September 19, 2012 4:26 AM
To: Adobe_Photoshop_Techniques@yahoogroups.com
Subject: RE: [Adobe_Photoshop_Techniques] Historgram
Thanks Clay, I'm sure to you it's quite obvious, can I take it that in fact
there's nothing wrong with the histogram and it's my inability to stretch it
and process it in Photoshop that is the issue.
Ray
From: Adobe_Photoshop_Techniques@yahoogroups.com
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com>
[mailto:Adobe_Photoshop_Techniques@yahoogroups.com
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com> ] On Behalf Of Clay
Swatzell
Sent: 18 September 2012 22:01
To: Adobe_Photoshop_Techniques@yahoogroups.com
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com>
Subject: RE: [Adobe_Photoshop_Techniques] Historgram
It would be because most of the photo is black.
From: Adobe_Photoshop_Techniques@yahoogroups.com
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com>
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com>
[mailto:Adobe_Photoshop_Techniques@yahoogroups.com
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com>
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com> ] On Behalf Of Ray
Sent: Tuesday, September 18, 2012 5:02 AM
To: Adobe_Photoshop_Techniques@yahoogroups.com
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com>
<mailto:Adobe_Photoshop_Techniques%40yahoogroups.com>
Subject: [Adobe_Photoshop_Techniques] Historgram
Hi group, new to this forum, i need a little help understanding the
historgram of my astro image (uploaded into the files section)
the historgram puts all my data to the zero point and appears to be clipping
the data
anyone know why this might be the case
R
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