[Leica] M8 + IR Filters - comparisons

[George Lottermoser]

Well my 092 "dark red" B+W F-Pro filter just arrived from B&H via UPS.
A very large box for a tiny 46mm filter.

The first thing I did was pointed the lens,
with the 093 filter still on the camera,
out the west office window.
Auto exposure indicated:
ISO 640
f:2
1/15th sec

Then I switched to the 092 filter.
Pointed it out the same window; similar framing.
Auto exposure indicated
ISO 640
f:2
between 1/180th 1/250th sec

A whopping 3 - 4 stop difference.

I was pleasantly surprised;
as this filter will make hand held,
lower ISO speeds,
much more practical.

I then stepped out on the front porch
and made two exposures,
one focusing on a light post,
about 7 - 8 meters away,
one making an IR focus adjustment,
Sharpness results inconclusive.

Need further, more precise, tripod, etc. testing.

Still achieving dramatically dark skies with good cloud separation;
though definitely not as dramatic as the 093.

I'll try and post some comparison tests as the week progresses. 

Regards,
George Lottermoser 

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