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Download D100 custom tones here: corrects underexposure

fotogenetic


63 posts

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fotogenetic Registered since 25th Nov 2002
Mon 25-Nov-02 02:15 PM

I've been publishing my results in the Nikon SLR forum at DPReview for a while now, but I hadn't registered as a Nikonian until today. However, I've been wanting to share with you my findings.

After noticing "underexposure" in my photographs with the D100, I decided to do several tests. I wanted to find out if the camera was indeed underexposing. So I tested my D100's meter against my faithful Nikon FA's meter which has always given me near-perfect exposures. I found that both camera's metered the same. Then I photographed evenly lit walls with the default tone settings on my D100 and found that the histograms were centered at a point midway between the lower quarter and the midpoint of the histogram range. After taking 30 photos with the same results, I concluded the tone curve was off.

I then experimented and created 3 tone curves with resulting histograms that matched almost exactly the histograms created when setting +0.3, +0.5, and +0.7 EV corrections with the normal tone curve setting. The tone curves curves were further tested thoroughly to ensure they did not introduce any color changes or blow out highlights any more than the default tone setting.

You can download my custom tone curves here (recommend using +0.5 ev equivalent curve for general use):
http://fotogenetic.fade.to

Try them out if you are unsatisfied with the default tone settings. They've worked well for me.

left: with +0.5 ev custom tone curve, right: normal tone
http://jjj.image.pbase.com/u12/atmabini/upload/7316288.D100TONETEST2SMALL.JPG

left: with +0.5 ev custom tone curve, right: normal tone
http://jjj.image.pbase.com/u12/atmabini/upload/7316352.D100TONETEST3SMALL.JPG

photo taken with +0.5 ev custom tone curve and minimal processing (only performed USM(200,.5,0), color saturation boost, no levels or curve adjustment)
http://jjj.image.pbase.com/u15/atmabini/upload/7582085.SURFERCARMELNOV02SMALL.JPG



Here's my gallery:
http://www.pbase.com/atmabini/carmel_monterey_2002


Subject
ID
Reply message RE: Download D100 custom tones here: corrects underexpo
1
Reply message You need NC3 to install, and yes, you can return to def
2
Reply message I need a clarified and serious explanation on this!
3
Reply message RE: I need a clarified and serious explanation on this!
4
     Reply message RE: I need a clarified and serious explanation on this!
5
          Reply message RE: I need a clarified and serious explanation on this!
6
               Reply message RE: I need a clarified and serious explanation on this!
7
                    Reply message RE: I need a clarified and serious explanation on this!
8
                    Reply message Mark - just downloaded the JLMcurve...with questions
9
                         Reply message RE: I need a clarified and serious explanation on this!
10
                              Reply message Now we know that both listings are the same person
13
                    Reply message I am Apolinario in DPReview! ;-)
11
                         Reply message Good hearing from you
12
                              Reply message RE: Good hearing from you
14
                              Reply message I can still do them, believe it or not
15
                              Reply message RE: Good hearing from you
16
                                   Reply message Sample of mid-tone lack of contrast
19
                              Reply message I tried the JLMcurve
                                   Reply message RE: I tried the JLMcurve
17
                                        Reply message Don't hurt yourself!
18
                                             Reply message RE: Don't hurt yourself!
28
                                                  Reply message Great
20
                                                  Reply message RE: Don't hurt yourself!
23
Reply message RE: Download D100 custom tones here: corrects underexpo
21
Reply message Difference is in highlight details
22
     Reply message +0.7 curve like JLMcurve but w/ mid tone contrast benef
24
          Reply message RE: +0.7 curve like JLMcurve but w/ mid tone contrast b
25
Reply message Okay gang, let's send a X-mas gift to Fotogenetic
26
Reply message Thanks for the thought Ben
27

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