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Peter Robinson pjrdata

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pjrdata / 2024-bybit-api-via-pybit.md
Created July 14, 2024 02:53
2024-bybit-api-via-pybit

placeholder for my notes

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pjrdata / 2021-04-03-Pinhole-Notes-4x10.md
Last active April 30, 2026 10:08
Holding space for notes on my 4x10 pinhole camera

2021-04-03 Notes on designing a 4x10 Pinhole camera

Here are some initial thoughts on a curved film plane 4x10 pinhole camera designed for the 2021 World Wide Pinhole Day camera building challenge.

4x10 negatives

I plan to use half a sheet of 10x8 darkroom paper as a paper negative so it's two paper negatives per 8x10 sheet of paper. I may try sheet film in it too later, but don't have any 8x10 film - I do have plenty of 8x10 paper so will use that first. After cutting a 8x10 paper sheet in half it will be this:

Negative length = 10" (254mm)
Negative width = 4" (102mm)