Recycled Polariser for 100mm Filter Holders

When I used a Cokin P square filter system I tried a few polarising filters, and ended up with one made by Stealth Gear which gave me pretty decent results. Unfortunately, since moving up from 84mm (Cokin P) to 100mm to cope with some of my wider lenses I’ve been having to make do without a polariser, as a lot of the 100mm versions seem to be tied to a particular filter holder and probably …

The Improved DIY Tubelight

After the unbridled fun of building my pipe light a few months back it struck me that since the build was in part my justifcation for buying a 3D printer, it would be a good idea to revisit the project and do it better using 3D printed parts. Now that’s the sort of challenge that could cause a load of buyer’s remorse if the result isn’t better and the build time a lot shorter. Risky, …

A Sheep in Wolf’s Clothing

Last spring, when I was putting together my anamorfake Pentacon 50mm lens, I had the overwhelming urge to get hold of a few more old M42 lenses of different focal lengths to hack in similar style. My project backlog has been a bit heavy since then, but while I was slightly stuck on the technicalities of the design for a couple of other projects I’m working on, I thought I’d clear my head with another …

Lens Hood for 100mm Filter Holder

I’m one of those sad photographers who always uses a lens hood. I have one for every lens I own, and whenever I’m taking pictures the hood is always on the lens the right way round, unless I’m actually wanting to inject a bit of flare into an image. I’m always amazed when I see people with very expensive pieces of glass on their cameras taking shots with the hood apparently permanently reversed. Why buy …

Make a Pipe Light

One of the surprises from the testing for my post on LED light quality was the spectrum produced by my generic 3W SMT COB LEDs: while not as good as the 95 CRI Nichia LEDs, they looked pretty good considering they cost about 50p each. One other thing in their favour is that they run off a voltage of 3.2 to 3.4 volts. So while my high CRI Nichia COB LEDs may produce a fantastic …