Try this:
<http://www.luminous-landscape.com/tutorials/understanding-series/understanding-histograms.shtml>
The scans are at least as good as any print you might have had made at
other than a custom processor. The advantage is that the scans contain
almost all of the data you could ask for to do your own digital
manipulation of the image. If you'd like to pick one that you really
wish had come out better, send me the full size scan and I'll work it
for you and send it back to show you (as well as I can at least) how the
image can be improved before printing.
Chuck Norcutt
Brent wrote:
> Hmm.. thanks.. maybe I need to reset my expectations when it comes to
> film scanning.
>
> Does anyone have any recommendations as to a web resource I could use
> to learn about histograms? I understand a little bit, and can tell
> when highlights are clipping or I'm losing information with gaps in
> the histogram but if there's a good resource out there on histograms
> and adjusting "levels", and what it all actually represents and the
> theory behind it, that would be very interesting.
>
> Brent
>
> On 28/11/2008, at 12:00 AM, Chuck Norcutt wrote:
>
>> Actually, I think the scans look pretty good. If you check the
>> histograms they've all been done so as to preserve the highlights and
>> only the darker shadows are lost if the the dynamic range is too high.
>> Doing better I think would require some sort of HDR technique. It
>> could
>> also be that the shadow detail simply isn't on the film but I have no
>> was to assess that. The exception to this image goodness is the image
>> of the bird. It has a very good histogram but shows some sort of
>> bright
>> artifacts around the edge of the breast and elsewhere where there are
>> strong contrasts between dark and light. But it could be these were
>> introduced during downsizing and sharpening. Check the original
>> scan to
>> see if it's there too.
>>
>> Some of the shots can be improved a bit with a little post processing
>> adjustment of shadows and highlights but most all of the image
>> brightness data is there for you to work with.
>>
>> Chuck Norcutt
>
>
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