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AstrHori has launched a new version of its AH-M1 light meter to deliver an even more stylish and affordable choice for analog photographers.

The Illuminati is the world's first Bluetooth light and color meter that works wirelessly with smartphones. It's a battery-powered device that connects to your iOS device, Android or smartwatch over Bluetooth, allowing you to take live readings without stepping away from your camera.

Back in 2013, Slovenia-based Lumu Labs raised over $244,000 on Kickstarter to launch the Lumu (currently available for $150), a headphone jack attachment that turns the iPhone into an accurate light meter for photographers. Now the company is back again with the Lumu Power, a next-gen attachment that doesn't just meter light -- it can measure and calculate flash and color temperature as well.

Back in March 2011, we featured an iPhone app that lets you use your iPhone as a makeshift light meter. The app apparently works pretty well, but if you've been looking for a fancier solution involving your iPhone, one has finally arrived.

It's called the Luxi, and is a small clip on accessory that turns your iPhone into a proper light meter.

For those of you amateur photographers out there who like shooting film, sometimes old cameras don't have the right light meter for getting the correct exposure. Sometimes they are faulty, inaccurate or have no light meter at all! Photographic light meters can be pretty expensive but analog foot-candle meters are cheap because they don't really have any photography purpose, until now. This guide will show you how to put it to work for photography.

Kaufmann’s Posographe is an intricate pocket-sized mechanical calculator invented back in the 1920s. Measuring 13x8cm and filled with tiny scribblings, the device allowed photographers to approximate the exposure values they needed by simply sliding around six small pointers.