IR pinholes with a Diana F+

The F+ accepts a 52mm filter with the rim removed, placed in the film chamber. The debris you see was on the filter.
All exposures about 4 minutes in bright sun and with a 720nm filter.
The negative was too dense at that exposure, so probably 2 or even 1 minute would have been better.
Yes, I know, my framing sucks.

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