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 …

Build Your Own Spectrometer

Not exactly a photography related build, or at least not directly, but if you want to build your own LED lighting and you don’t happen to have a lab with a CRI testing facilities at your disposal, a spectrometer is a useful thing to have around. Whenever you want to check out those bargain LEDs you bought before you commit to building them into a light, stick them in front of this and look at …

DIY Wireless DSLR Tethering: Part 2

In the first part of this project I got to the point where I could wirelessly tether my DSLRs to the qDSLRDashboard application via a modified TP-Link MR3020 wireless router. Powering the MR3020 with a USB power bank gives a reasonably portable system, although for working in the field it’s not the slickest of setups as there are two boxes (router and power bank) rattling around needing to be secured. So in this post I’m …