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Frame Grabs From
Tests On ..
SFX200 Near Infra Red Film
They were shot
in Devon UK at the end of my garden, around 9:30 am.
They're the centre exposure of runs that go from -2 to +2 stops at
half stop increments.
The unfiltered shot was rated at 100 ISO which is the recommended rating
and it seems to be spot on.
The red filter was a 2 stop loss so film rated at 25 ISO for those tests.
The SFX was shot as a 4 stop loss as recommended, it may have been marginally
less maybe 3 2/3 film rated at 6 ISO.
Base T stop was 11 unfiltered with a 45 degree shutter to allow for exposure
variation with shutter.
So 5.6 with red and 2.8 with IR which was a gel in the gate of my 435.
The tests were shot on a Cooke 32mm and NO compensation was made for focus
Unfortunately rain clouds moving in killed the black sky/white clouds
effect, the weather is perfect for more tests at the moment but my kit
is in transit to my next shoot.
colour reference shot on Fuji 64D