You are reading a single comment by @user8746 and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@user8746
Cheers for that. I have no light meter but I'll grad one of the cheap analogue ones from ebay and use as suggested.
I was thinking I might need to do that sort of setup with the lens, was trying to find an easier method though. A few sums is less fiddly than a manual calibration.