imagineero . schrieb:
>
> >Gary Reese commented a while back about the variance in reflectance in
> >different film brands. I don't recall if there was one film that was
> >exactly correct for the exposure system of the OM2n?
>
> I am not 100ure, but I believe that no conclusive results were drawn. I
> remember a few people tested a couple of different types of film,
I´ve posted sometimes ago an chart made by Hasselblad.
With introducing of TTL flashmetering into there camera bodies they
measured
common films of that time:
Film Sensitivity Seting to compensate the
relative film base reflectivity
Agfachrome RS 100 100 100
Agfachrome RS 1000 1000 1000
Agfachrome RS 200 200 200
Agfachrome RS 50 50 64
Fujichrome RDP 100 100
Fujichrome RFP 50 64
Kodak Ektachrome 100 100 100
Kodak Ektachrome 100+ 100 100
Kodak Ektachrome 200 200 200
Kodak Ektachrome 64 64 64
Kodak Ektachrome 400 400 320
Kodak Kodachrome 64 64 50
Agfacolor XRS 400 400 320
Agfacolor XRS 200 200 160
Agfacolor XRS 1000 1000 640
Agfacolor XRS 100 100 100
Agfapan 100 100 80
Agfapan 25 25 16
Agfapan 400 400 250
Fuyicolor 160 NSP 160 125
Fuyicolor HR 100 100 100
Fuyicolor HR 400 400 320
Ilford FP-4 125 80
Ilford HP-5 400 250
Ilford Pan-F 50 32
Ilford XP-1 400 250
Kodak Ektacolor Gold 160 125
Kodak Kodacolor Gold 200 160
Kodak Plus-X Pan 125 100
Kodak TMAX 100 100 64
Kodak TMAX 400 400 250
Kodak Technical Pan 25 16
Kodak Tri-X Pan 400 250
Kodak Tri-X Prof. 320 200
Kodak Vericolor Prof. 400 320
Kodak Vericolor III 160 100
Kodak Vericolor HC 100 80
As we see most slide films will be very close to standard reflecctivity,
while print film often neeeds an compensation towards the plus side,
which is less critical with print film, because of their wider latitude.
I asume, with TTL flash metering more common today, that film
reflectivity is today even more close to 18tandard reflectivity.
Regards
Richard
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