Gel on fill flash on heavily overcast winter day with snow

Started Jan 18, 2012 | Discussions thread
jean bernier Veteran Member • Posts: 3,176
Re: Gel on fill flash on heavily overcast winter day with snow

The very first step, in any situation where ambient/flash will be mixed, is to match both lights (unless a mismatch is desired as an effect).

That means an orange gel on the flash with incandescent, etc (note that manufacturer supplied orange filters are only a compromise: for perfect color match, a sandwich of two or more gels is usually required. Tests must be done properly).

the SB-900, as well as other Nikon flashes (I don't use other brands), is far from being a "daylight" kind of source: it is much bluer than direct sun. Ever wondered why there is separate WB in the Nikon's ? "direct sun"and "flash" are different. In order to make the flash match "direct sun", the flash should be gelled with a 1/4 CTS filter (and of course, setting the camera to "direct sun"). Why is it that way ? If the flash was already matched with direct sun through flashtube filtration, it would show a much lower guide number. Bad for marketing, and in a way, if flash-only pics are taken, why waste away power into a permanent filter ?

To make a short story, the overcast ambient light (bluish) and the non-filtered SB-900 (bluish as well) should be close enough in color temp that you probably won't see no detrimental effect. If you strive for perfection, tests should be done to find the best filtration for the most usual situations you encounter. And as already recommended, shoot raw in order to fine tune wb later in PP.
have fun
Jean Bernier

All photographs are only more or less credible illusions

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