mcall at SUPERAJE.COM
Fri May 15 21:09:00 CDT 1998
Color photos don't allow internal structures to be dissected and cannot be
Color photos cannot be examined for fine detail under a light or other
Chemical tests (lichens, etc.) cannot be made on a color photo.
You can't x-ray a color photo.
DNA fragments or sequences cannot be obtained from a photo.
Measurements in another dimension cannot be made on a color photo, other
than at the angle the photo or photos were taken.
Stomach contents (fishes, etc.) cannot be checked on a photo.
A photo is not very good for checking for parasites.
Cross sections of a tooth, examination of a scale or skull for aging are
difficult on a photo.
Photos can supplement specimens. They can show live color. Photos of living
specimens can show posture and other features.
Give me a specimen every time. Take care of it. Supplement it with para- and
other types. Yes supplement it with photos, x-rays, scanning EM images,
biochem, DNA and other test information. Accompany the specimen by precise
geographic location, habitat, environment, time and other data. Labels are
as important as specimens. A good specimen may be virtually useless when
data are missing or erroneous.
Thomas Schlemmermeyer wrote:
> Sorry, here I got confused!
> > them among museums. And for full color photos, with lots of
> > detail. For existing species this might best be done before
> > holotype disappears.
> 1.) What is the life time of a modern color photo?
> 2.) Do color photos really show lots of details?
> At least, in my case, insects, the best thing are scientific
> drawings made by the expert himself. color photos don't help
> any much!
> But, maybe, in birds it is different. As birds are larger.
> Cheers Thomas
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