Serene Life

by garik

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2
votes
3answers
212 views

Can I use my room's wall as a diffuser for a spot light?

Would like to record my face with a webcam on my desktop. I have a white wall with some light blue texture in front of my desk. Can I use that as a diffuser? I dont want to invest in a soft box or ...
2
votes
0answers
76 views

Filtering out RED light from a white LED source [closed]

We use red light for high speed videography. currently we use a Tungsten light source with a Red filter. Unfortunately, the Tungsten light source creates too much heat for our laboratory use. We ...
1
vote
0answers
45 views

Brightness of LED panel [duplicate]

If choosing a xenon flash, GN is a common reference. Come to led panel, there is lm/m and lux. This is a spec. of led panel: LM: 520/m LUX: 1m: 650, 2m:170, 3m:80 Whats EV equivalent of above ...
1
vote
4answers
311 views

Will LEDs work with a point & shoot camera for light booth digital photography?

I am planning on using multiple strips of LEDs to light up a 2 ft x 2 ft x 2 ft light booth for taking pictures of small items. LED output is Cool White 6500k. Digital camera is low cost 5 megapixel ...
11
votes
4answers
9k views

What is the purpose of a dual LED flash?

I see that some smartphones now have dual LED flash. What exactly is the purpose of a dual LED flash? Anything to do with brightness? What can a dual do that a single flash cannot? Would a triple LED ...