Testing enlarger lens coverage

When buying enlarger lenses, it is important not only to choose a lens of the right focal length to give the required magnification, but also sufficient coverage to cover the negative without vignetting. The rule of thumb with enlarger lenses is: Focal length Typical coverage 50mm 35mm 75-80mm 6×6 100-110mm 6×9 150mm 5×4″ I decided to […]

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Multi-microphone test

There’s a bewildering choice of microphone types available and it can be hard to know which type of microphone to choose, let alone which make and model within that type. I grabbed one of each of my microphones and performed a simultaneous microphone test on various test sounds. Maybe this unscientific video test will even […]

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Testing toners

Toning a black & white print is a dark art (and one that I’m just beginning to learn). So many different toners exist and can be used to create different coloured tints according to the concentration, temperature, time taken and combination of multiple toners that it is hard to know where to start. To make […]

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Development test

This article is about something I should have done long, long ago. I regularly use Ilford FP4+ as my “standard” film but I don’t really know exactly how it behaves in different developers. It behaves nicely in all Ilford developers but for my purposes (mostly landscape photography) I would usually pull by about one stop […]

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Second pinhole test

After making some pinholes recently, I tested them with my DSLR. It has a tiny sensor and it’s not even the camera I intended to use the pinholes with. So naturally I’ve now tested them with my Horseman 980 view camera, which has a sensor area sixteen times greater than a crop-sensor DSLR. I was […]

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Pinhole test

Recently I wrote about making a pinhole lens for my view camera. The results weren’t brilliant and I wondered if I had chosen the right diameter of pinhole. So I asked laser dude to cut some more pinholes in other sizes, and now I have 0.2mm, 0.3mm, 0.4mm and 0.5mm pinholes, all mounted in 80mm […]

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