Mike Del Vecchio wrote: >The term "best" saturation is subjective to the viewer. In terms of pure >color saturation, though, Velvia has the title of "most." But Velvia takes >it to the extreme, I think, and it creates color where there wasnt' any. If shot at the International Standards Organization recommended rating of (ISO) 50, Velvia can indeed overenhance colors. For daylight applications, I shoot mine at 40 ISO and I have also shot it as 32 before too with good results on high contrast subjects. One thing I noticed immediately though is that Velvia is an accurate 50 ISO with 5500K studio strobes, and since Velvia's largest use is commercially in studios, this ISO rating makes sense.
All film manufacturers make note that (wording varies) "For critical applications, it is best to do your own exposure tests". Sometimes no matter how strict the quality control, due to the nature of senstized materials, there may be variations from one batch for the same fil to the next. Fuji even lists the correct color compensating filter and recommended ISO rating for each box of 4x5 sheet film, (my Velvia behaves the same regardless of format and film size). I purposly will not buy or order film that is labeled as deviating from the intended ISO or requires corrective filtration, but it is nice to know that Fuji is this critical. The box also says: "The above exposure guide shows the effective sensitivity and color compensating filter when exposing the film bearing the given emulsion number in bright sunlight at a 1/60-second exposure time". This means that reciprocity failure from other than the ideal exposure time is not and cannot be taken into consideration in all instances and that the sun is a variable color temperature light source at all times and many people forget this. Nice afternoon golden glow? That ain't 5500K folks! Mike says: > It's all up to the shooter. Yes it is! Have fun. Regards, Dave Cohen Photographer [EMAIL PROTECTED] --> SPORRS: Serious Photographers of Railroad Related Subjects X-Mozilla-Status: 0001 Content-Length: 7405
