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Questions tagged [led-lighting]

The tag has no usage guidance.

2
votes
2answers
49 views

CFL and LED mixed

I am shooting green screen video. I need to light the screen as well as the subject. I have a bunch of 6000K CFL's and I want to get a few LED's. If both types are the same temperature, 6000K, can I ...
0
votes
1answer
29 views

Why is a LED light flashing when used in my Omega C700 enlarger?

Has anyone used a LED light in an Omega C700 Condenser Enlarger? I've tried it once and it worked well but when I tried to use it again the light started flashing. I'm using an 11w warm white LED ...
-2
votes
1answer
322 views

Camera settings for extreme close ups

I am brand new to photography and working with cameras so I am open to any suggestions. I am wondering what settings should I be focusing on for extreme close up shooting to get the best quality ...
4
votes
2answers
489 views

How to rank the CRI of no-name LED lights using simple DIY tools?

I have some no-name LEDs and I would like to estimate how good their CRI is. What I need is only a rough estimate, since I would use the best ones for studio lighting or product lighting, while the ...
7
votes
9answers
7k views

LED flicker, has technology eliminated it?

Based on this question - Two pictures with the same setting come out with different lighting - and the answers & comments I did a quick test on one of my LED continuous lighting panels. I'm aware ...
-5
votes
3answers
3k views

Why do LEDs have only RGB (Red, Green, Blue) colors? [closed]

After some studies I've found LEDs having 3 colors RGB (Red, Green and Blue), I was very interested in this topic so this question is up. The Diagram will tell the colors in LEDs. > Red, Green ...
1
vote
3answers
507 views

Battery powered High speed sync with Led continous

Are there such a thing? A High speed sync flash for photography And it also work as led continous for film And it should be battery powered .
1
vote
3answers
298 views

What light-painting technique/gear (flash, LED panel, flashlight) was used to make this shot?

Referencing this Death Valley image by Marc Adamus: Is this lit by flash, LED panel, or flashlight? I like the lighting, and am trying to achieve a similar result, but problems... Sekonic L-558 ...
3
votes
2answers
251 views

Do colored LED lights produce less illuminance than traditional spotlights?

I'm shooting theater plays and starting to shoot some alternative fashion shows. Many colored lights these days are LEDs, not white + gel as they used to be. Let's simplify things a bit and consider ...
4
votes
4answers
1k views

What's the difference between LED and conventional lighting?

Is there any difference in LED lighting vs bulb lighting or any other lighting? Someone said that the LED light doesn't have the full spectrum of light. Is that a problem?
2
votes
2answers
3k views

Best way to photograph a LED wall (that has people in front of it)

The LED wall is interactive and the challenge is to make pictures that show both the wall and people interacting with it, without having the banding or moire effect, that often happens when taking ...
8
votes
1answer
205 views

What causes these bands in this macro photograph of a LED?

I took these photos of two LEDs: from my Nexus 5 phone. The distance between the lens and the LEDs was lens than 2 cms. The bands only appear when going up this close. Are these a software/image ...
3
votes
1answer
75 views

Is there a way to use my phone's dual LED flash with my NEX?

My phone has a dual LED flash that's supposed to match the color temperature of the scene, preventing color balance problems like this. I do a lot of night photography, and I use my NEX-5R. The NEX ...
1
vote
1answer
1k views

Can I leave a smartphone's LED flash on continuously before taking a photo?

When I take photos in the dark using my phone, I sometimes use the flash. However, the flash fires only at the instant of taking the photo, as with a traditional camera. This means that the preview is ...
0
votes
1answer
577 views

Where can I find light bars?

I am looking for light bars/tubes like the ones you can see here and here. I've googled it but have exclusively found LED lights but that's not what I want. Any ideas where I can find it ? Am not ...
0
votes
3answers
4k views

How can I amplify the light from a tiny white LED through a keyhole?

I am working currently on an art project. My target: I apply around 1000 lumen of light through a key hole of a door lock. The light is supposed to go through the key hole and the outcome of the ...
2
votes
2answers
582 views

How can I match adjustable-color artificial light temperature to ambient light?

I got some bi-color LEDs that allow me to control the temperature of the light they produce in the range 3200K-5600K. I will be using them in non-studio settings to complement available light. What ...
7
votes
3answers
7k views

How do I get accurate color when taking a photo of an LED?

When I'm taking a photo of a LED diode (turned on), it appears to be brighter than it should be and its color is false. For example, red diode looks pink. I have tried changing white balance or use ...
2
votes
5answers
479 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 ...
1
vote
0answers
971 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
63 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
779 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 ...
24
votes
4answers
76k 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 ...