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Subject: "RE: Effective Use of Histogram" Previous topic | Next topic
elec164 Silver Member Nikonian since 15th Jan 2009Mon 14-Feb-11 06:06 PM
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#16. "RE: Effective Use of Histogram"
In response to In response to 15
Mon 14-Feb-11 06:09 PM by elec164

US
          

>Thanks for the comment Pete. Could you explain what you feel
>is the MOST effective use of the histogram, and also other
>ways the histogram might be used to help provide the
>"perfect" pic?

When shooting NEF’s the histogram is derived from the embedded JPEG not the raw data. As such one needs to be mindful of the Picture control settings. If you are shooting JPEG’s with the aim of getting it correct in camera through the use of Picture Controls without the consideration of PP later, then you can use the histogram to your advantage. But in doing so you could very well be reducing the DNR and possibly underexposing your capture if you are dialing in –EV to prevent blinkies or a right side wall in the histogram. Reason being is that those blinkies could be the result of the Picture Control settings (boosted contrast, brightness, saturation or sharpening) and not actual sensel site saturation. If your goal is to maximize the DNR an SNR of the sensor by shooting NEF’s and using the histogram to employ ETTR, then you should set sharpening to minimal or zero and the other Picture Controls to neutral to provide a flat response.

Actually there is whole genre of people who wish to squeeze the absolute most their sensor is capable of who take this concept to an extreme. They set a custom WB known as a Uni-WB (I believe it stands for Unity Gain WB). By doing so you can get a better read on if you are getting sensor site saturation and need to dial in negative EV to prevent lost detail. The down side is that the immediate image is unusable until you process it later in an editor. And I believe I read a article by Thom Hogan where he mentioned that when he loaded a Uni-WB into the D7000 he discovered that it has a tendency to under, not over-expose like many believe (although I have yet to relocate that article).

It comes down to preference in shooting style and I feel either way is valid if it gets the results you are looking for. But in Ann’s case (the OP), she was having her images rejected by her stock agency for excessive noise (even base ISO images). She made a thread about this issue soon after she started using her D7000. So in her case, for whatever reason, the camera was slightly underexposing but the PP (either in camera or external editor) was remapping the data to make it brighter, with the side effect of increasing the appearance of noise. So again, if you have the Picture Controls set to boost saturation and contrast and dial up the sharpening to achieve a usable image straight from the camera, then you need to be mindful of how that may affect what is being represented by the histogram.

At least I hope this explanation is clear and precise enough.

Pete

Pete

Visit my Nikonians gallery.

  

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This is a hot, active topic!It's official: my D7000 consistently underexposes! [View all] , waxart , Wed 19-Jan-11 05:27 PM
 
Subject Author Message Date ID
Reply message RE: It's official: my D7000 consistently underexposes!
DVDMike Silver Member
19th Jan 2011
1
Reply message RE: It's official: my D7000 consistently underexposes!
simondyer
21st Jan 2011
2
Reply message RE: It's official: my D7000 consistently underexposes!
elec164 Silver Member
21st Jan 2011
3
Reply message Effective Use of Histogram
BillboTex
14th Feb 2011
15
     Reply message RE: Effective Use of Histogram
elec164 Silver Member
14th Feb 2011
16
          Reply message RE: Effective Use of Histogram
Robman3
14th Feb 2011
17
          Reply message RE: Effective Use of Histogram
BillboTex
14th Feb 2011
18
          Reply message RE: Effective Use of Histogram
waxart
15th Feb 2011
22
Reply message RE: It's official: my D7000 consistently underexposes!
mikeon
21st Jan 2011
4
Reply message RE: It's official: my D7000 consistently underexposes!
wulph
13th Feb 2011
5
Reply message RE: It's official: my D7000 consistently underexposes!
briantilley Moderator
13th Feb 2011
7
Reply message RE: It's official: my D7000 consistently underexposes!
pjr Gold Member
13th Feb 2011
6
Reply message RE: I disagree
Len Shepherd Gold Member
13th Feb 2011
8
     Reply message RE: I disagree
JPJ Silver Member
13th Feb 2011
9
          Reply message Shoot RAW and set picture control to soft
hyphotographer
29th Sep 2013
51
               Reply message RE: Shoot RAW and set picture control to soft
richardd300 Silver Member
29th Sep 2013
52
                    Reply message RE: Shoot RAW and set picture control to soft
hyphotographer
29th Sep 2013
53
                         Reply message RE: Shoot RAW and set picture control to soft
richardd300 Silver Member
29th Sep 2013
54
Reply message RE: It's official: my D7000 consistently underexposes!
dm1dave Administrator
13th Feb 2011
10
Reply message RE: It's official: my D7000 consistently underexposes!
visionguru
13th Feb 2011
11
Reply message RE: It's official: my D7000 consistently underexposes!
JHzlwd Silver Member
13th Feb 2011
12
Reply message RE: It's official: my D7000 consistently underexposes!
KnightPhoto Gold Member
13th Feb 2011
13
     Reply message RE: It's official: my D7000 consistently underexposes!
JPJ Silver Member
14th Feb 2011
14
          Reply message RE: It's official: my D7000 consistently underexposes!
KnightPhoto Gold Member
17th Feb 2011
28
               Reply message RE: It's official: my D7000 consistently underexposes!
JPJ Silver Member
17th Feb 2011
29
Reply message RE: It got this one right yesterday morning
Len Shepherd Gold Member
15th Feb 2011
19
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JPJ Silver Member
15th Feb 2011
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BillboTex
15th Feb 2011
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gkaiseril Gold Member
15th Feb 2011
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elec164 Silver Member
15th Feb 2011
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JPJ Silver Member
15th Feb 2011
25
                    Reply message RE: It got this one right yesterday morning
Mike55Y Silver Member
15th Feb 2011
26
                         Reply message RE: It got this one right yesterday morning
briantilley Moderator
16th Feb 2011
27
Reply message RE: It's official: my D7000 consistently underexposes!
DCCat Silver Member
23rd Sep 2013
30
Reply message RE: It's official: my D7000 consistently underexposes!
briantilley Moderator
23rd Sep 2013
31
Reply message RE: It's official: my D7000 consistently underexposes!
DCCat Silver Member
23rd Sep 2013
32
     Reply message RE: It's official: my D7000 consistently underexposes!
km6xz Moderator
24th Sep 2013
33
          Reply message RE: It's official: my D7000 consistently underexposes!
DCCat Silver Member
24th Sep 2013
34
Reply message RE: It's official: my D7000 consistently underexposes!
RLDubbya Silver Member
24th Sep 2013
38
     Reply message RE: It's official: my D7000 consistently underexposes!
DCCat Silver Member
25th Sep 2013
40
          Reply message RE: It's official: my D7000 consistently underexposes!
briantilley Moderator
25th Sep 2013
41
               Reply message RE: It's official: my D7000 consistently underexposes!
KnightPhoto Gold Member
26th Sep 2013
45
Reply message RE: It's official: my D7000 consistently underexposes!
EZRDRZ
24th Sep 2013
35
Reply message RE: It's official: my D7000 consistently underexposes!
km6xz Moderator
24th Sep 2013
36
     Reply message RE: It's official: my D7000 consistently underexposes!
richardd300 Silver Member
24th Sep 2013
37
     Reply message RE: It's official: my D7000 consistently underexposes!
km6xz Moderator
25th Sep 2013
42
          Reply message RE: It's official: my D7000 consistently underexposes!
richardd300 Silver Member
25th Sep 2013
43
               Reply message RE: It's official: my D7000 consistently underexposes!
EZRDRZ
25th Sep 2013
44
               Reply message RE: It's official: my D7000 consistently underexposes!
richardd300 Silver Member
26th Sep 2013
46
               Reply message RE: It's official: my D7000 consistently underexposes!
km6xz Moderator
26th Sep 2013
47
                    Reply message RE: It's official: my D7000 consistently underexposes!
richardd300 Silver Member
26th Sep 2013
48
                         Reply message RE: It's official: my D7000 consistently underexposes!
km6xz Moderator
27th Sep 2013
49
                              Reply message RE: It's official: my D7000 consistently underexposes!
richardd300 Silver Member
28th Sep 2013
50
     Reply message RE: It's official: my D7000 consistently underexposes!
mjhach Silver Member
24th Sep 2013
39

Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D7100, D7000 (Public) topic #4946 Previous topic | Next topic


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