Re: A scientific approach to proving whether man landed on the moon - photogrammetric rectification
- From: "Brad Guth" <ieisbradguth@xxxxxxxxx>
- Date: 14 Jul 2006 11:23:41 -0700
Phineas T Puddleduck wrote:
No, you're the problem. And an idiot. And a coward.
Photoshop for Astrophotographers
http://www.astropix.com/PFA/SAMPLE1/SAMPLE1.HTM
Dynamic range is the amount of difference between the brightest and
darkest ... Kodak's Ektachrome 200 is an excellent choice for deepsky
because there will be more contrast, not only between faint parts of
the nebulosity, but also between the faint nebulosity and the sky
background.
In other words, the the 'D-Max" of Kodak Ektachrome offers far better
DR(dynamic range) than most any color print film that's good for 8
f-stops.
"Kodak's Kodachrome has a D-Max of about 3.7, which is almost twelve
stops"
I'd previously arrived at 11.7 ~ 12.96 stops, although that's somewhat
unavoidably limited by the whatever the lens introduces, thus you might
count on roughly 7+ f/stops unless using the Carl Zeiss quality of lens
along with a polarised element, which shouldn't have any difficulty
pushing and/or allowing that Ektachrome to offering better than 9
usable f/stops, 10 maximum upon being properly scanned = 1023:1, and if
PhotoShop extended = 2045:1.
Bob Monaghan recently had this to say:
http://groups.google.com/group/rec.photo.equipment.35mm/browse_frm/thread/ca278ccafdf6d316/82bbe950330f1dd4?lnk=st&q=%22Film+Film+Dmax%22&rnum=1&hl=en#82bbe950330f1dd4
Film Film Dmax Contrast [n.b. 4096:1 is 12 stops]
Vericolor 5072 (neg-pos) 3.9 D 8000:1
Kodachrome 25 3.8 D 6300:1
Kodachrome 64 3.7 D 5000:1
Ektachrome 64 3.7 D 5000:1
Ektachrome 100GX 3.8 D 6300:1
Ektachrome 100plus EPP 3.8 D 6300:1
Fuji Velvia 50 RVP 3.8 D 6300:1
Fuji Velvia 100 RVP100F 3.8 D 6300:1
Fujichrome EI 100 3.6 D 4000:1
in short, lots of us work with films which have 12 or morehttp://palimpsest.stanford.edu/byauth/vitale/digital-projection/
stops of dynamic range.
So, exactly whom's kidding whom?
Which only means that you folks are either dumbfounded or certified
liars, as well as for that of our "Scott Dorsey" lying his
disinformation suckeing and blowing infomercial *** off.
Scott Dorsey; Ektachrome doesn't even have the range toBesides all of the hard-science proof that's easily replicated from
capture sun-lit landscapes all by themselves...
Kodak and from any number of other independent sources, whereas even
those NASA/Apollo EVA images is offer us more than what proves this
statement of his is simply another damage-control lie, just like all of
the ***-ugly lies of his resident LLPOF warlord(GW Bush).
-
Brad Guth
.
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