Luxi 4 is a diffusion dome that fits securely over your iPhone 4(S) front-facing camera.
When attached and used with a light meter app, Luxi™ will help you determine the best settings for your DSLR or other camera so that you can take perfectly exposed pictures.
Dave Johnson, writing for Macworld:
If you don’t have a light meter yet, Luxi gets you get in the game for less than a tenth the cost of a traditional one–and the accuracy is superb, delivering the same kind of results you’d get from a “real” meter. full article
Luxi is a registered trademark of E S Devices
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