LED – Photo rumblings and whispers

PWM-dimming of RGB LEDs

Pedro J. Aphalo 2017-10-23 2018-10-15Mehods, Photography 0

Here I have tested a single individual lamp, of a single brand and type. From the ubiquity of identical or very similar lamps sold under different brand names by numerous sellers in eBay and Aliexpress, this seems to be a “typical” or popular type. The intention is for it to serve as an example of one specific technology for adjustment of the light output of LED lamps. This is not a comparative review.

Dimming of LEDs

Pedro J. Aphalo 2017-10-21 2018-06-18Photography, Techniques 0

If you are interested in photography, and take photographs under illumination from LEDs, you need to be aware of how the dimming of LED lamps works. LEDs are becoming very popular, and dimmers are quite frequently used to adjust the light level. This applies to households, offices, commercial spaces, and the now ubiquitous special LED lamps sold for studio and on location video and photography.