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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 11 Jan 2011 (Tuesday) 14:25
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Show us your setup and the final result!

 
steelbluesleepr
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Jan 29, 2015 14:39 |  #8506

Keebert wrote in post #17405791 (external link)
What LED lights are you using? I used some LED Christmas lights for a backdrop and they flicker - not that you can see it normally but on half my shots the LEDs appear off.

try with a slower shutter speed, then. I'm not sure what the frequency is that they flicker at, but try some test shots at different speeds to see what happens. It should be just like the flicker of older-style fluorescent lights.


-Jayson- my flickr (external link)
In the bag: 5D mark II+Vello grio/10d+grip/Canon 17-40L/Canon 28-135/Canon 50 1.8/Canon 35-80 Macro Conversion/Vivitar 135 2.8 M42/Vivitar 28 2.5 M42/Yongnuo YN460II x3/Yongnuo RF-602 x3

  
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mmmfotografie
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Jan 29, 2015 14:58 |  #8507

Normally LED flicker up to 100 KHz range and cheaper versions connected to a wall-socket flicker at 60Hz or 50Hz so clearly visible to cameras.

I assume in cars a frequency is used that is also below 100 Hz.




  
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wishucould00
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Jan 29, 2015 18:31 |  #8508

Keebert wrote in post #17405791 (external link)
What LED lights are you using? I used some LED Christmas lights for a backdrop and they flicker - not that you can see it normally but on half my shots the LEDs appear off.

I used the LED light tape I bought off Amazon


Photography by: Tim Neubauer
www.studio708oshkosh.c​om (external link)
Canon 5d MkIII x 2, Canon EOS-M, Canon 200mm f2L, Canon 11-24 f4L, 50mm 1.2L, 24-105 f4L, 16-35 2.8L II, 85 1.2L II, 100 2.8L Macro, 35mm 1.4L, 70-200 2.8L IS MkII, 135mm f2, 24-35mm f2

  
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Tom_D
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Jan 29, 2015 21:41 |  #8509

I wonder if the 7D2 anti-flicker setting would fix this? (external link)


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7DMkII, 40D, 17-55, 70-200 f/2.8 IS and more...
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smythie
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Jan 29, 2015 21:58 |  #8510

Intersting


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Left ­ Handed ­ Brisket
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Post edited over 4 years ago by Left Handed Brisket.
     
Jan 30, 2015 09:19 |  #8511

Gridded CL-360 overhead and old Nikon SB-28 on the floor propped up into a gridded and flagged Cheetah Qbox.

Set up:


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result:


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PSA: The above post may contain sarcasm, reply at your own risk | Not in gear database: Auto Sears 50mm 2.0 / 3x CL-360, Nikon SB-28, SunPak auto 322 D, Minolta 20

  
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nathancarter
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Jan 30, 2015 09:25 |  #8512

silvrr wrote in post #17405879 (external link)
I think most LEDs flicker, you see it alot in new car videos. If you maker your shutter longer than the on/off cycle of the LED it shouldn't show.

1/50 should do it.


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http://www.facebook.co​m/VictorVoyeur (external link) for fun stuff

  
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vk2gwk
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Jan 30, 2015 17:00 |  #8513

Re. flickering LEDs: It depends on how they are fed. LEDs are "light emitting diodes" So they work only with DC. If that is DC from a battery they won't flicker. If that is DC converted/recitfied from AC it depends wether there is a buffer capacitor included in the circuit. For home brewers that use wall warts to feed the leds it might be helpful to include a reasonably large (1,000/10,000mF) electrolytic capacitor in the circuit the get rid of the flicker.
Although car leds are fed from a battery they still flickr because the circuit that powers the leds converts the car battery voltage to that suitable for the leds in a "pulsing" manner. The same happens for other "power" leds. But the strips you can buy don't have a circuit built in like that so won't flicker when fed by a battery or buffered rectifier.


My name is Henk. and I believe "It is all in the eye of the beholder....."
Image Editing is allowed. Please explain what you did!
5D MkIV 5DMkIII, 50D, 24-105/1:4L IS USM + 100-400/4-5.6L IS USM + 50mm 1.4 USM + Tamron 70-200mm F/2.8 VC + Sigma 150-600mm Sports + 580EXII + 430EX + YN568EXII, triggers, reflectors, umbrellas and some more bits and pieces...
Photos on: Flickr! (external link) and on my own web site. (external link)

  
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steelbluesleepr
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Post edited over 4 years ago by steelbluesleepr.
     
Jan 30, 2015 18:37 |  #8514

IMAGE: https://farm8.staticflickr.com/7347/16404820262_f9cf350b2d_b.jpg
IMAGE LINK: https://flic.kr/p/qZCZ​wE  (external link) spray gun (external link) by Jcareyphoto (external link), on Flickr
IMAGE: https://farm9.staticflickr.com/8677/15783255114_14209109a2_b.jpg
IMAGE LINK: https://flic.kr/p/q3Hi​Sb  (external link) Spray gun BTS (external link) by Jcareyphoto (external link), on Flickr

The tripod to the right shows the camera position. I triggered the flashes with another flash on-camera aimed at the ceiling at very low power.

-Jayson- my flickr (external link)
In the bag: 5D mark II+Vello grio/10d+grip/Canon 17-40L/Canon 28-135/Canon 50 1.8/Canon 35-80 Macro Conversion/Vivitar 135 2.8 M42/Vivitar 28 2.5 M42/Yongnuo YN460II x3/Yongnuo RF-602 x3

  
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smythie
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Jan 31, 2015 06:51 |  #8515

vk2gwk wrote in post #17407700 (external link)
Re. flickering LEDs: It depends on how they are fed. LEDs are "light emitting diodes" So they work only with DC. If that is DC from a battery they won't flicker. If that is DC converted/recitfied from AC it depends wether there is a buffer capacitor included in the circuit. For home brewers that use wall warts to feed the leds it might be helpful to include a reasonably large (1,000/10,000mF) electrolytic capacitor in the circuit the get rid of the flicker.
Although car leds are fed from a battery they still flickr because the circuit that powers the leds converts the car battery voltage to that suitable for the leds in a "pulsing" manner. The same happens for other "power" leds. But the strips you can buy don't have a circuit built in like that so won't flicker when fed by a battery or buffered rectifier.

Great info!


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DisrupTer911
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Jan 31, 2015 10:22 as a reply to  @ steelbluesleepr's post |  #8516

Only thing I don't like is the reflection of the stand/reflector in the hopper


www.vividemotionphotograph​y.comexternal link

  
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steelbluesleepr
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Jan 31, 2015 16:00 as a reply to  @ DisrupTer911's post |  #8517

I completely agree. This was a very quick and dirty shoot and edit. I'm planning on going back and shooting it again when time permits, I didn't really get the look I wanted to our of it. I could also easily go.back and edit that reflection out, too.


-Jayson- my flickr (external link)
In the bag: 5D mark II+Vello grio/10d+grip/Canon 17-40L/Canon 28-135/Canon 50 1.8/Canon 35-80 Macro Conversion/Vivitar 135 2.8 M42/Vivitar 28 2.5 M42/Yongnuo YN460II x3/Yongnuo RF-602 x3

  
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PerTomas
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Feb 01, 2015 11:37 as a reply to  @ post 17357525 |  #8518

dreamshot.....




  
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franzli
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Post edited over 4 years ago by franzli. (2 edits in all)
     
Feb 01, 2015 14:15 |  #8519

This is my first post in here. I had a week to go through all the 565 pages. Really, you guys are doing great stuff.

What I have used:
1. Canon EOS 5D Mark III
2. Canon EF 100mm f/2.8L IS USM MACRO
3. Canon 580 EX II
4. Yongnuo 568 EX II
5. Canon 430 EZ in a stripbox
6. Yongnuo YN-622-TX-C + 3xYN-622-C

Here are the final results:

IMAGE: https://farm8.staticflickr.com/7412/16420464582_cc87473d9f_o.jpg
IMAGE LINK: https://flic.kr/p/r22b​3j  (external link) Splash shot setup (external link) by Franzli (external link), on Flickr

IMAGE: https://farm8.staticflickr.com/7342/16419647931_fb56f5b214_o.jpg
IMAGE LINK: https://flic.kr/p/r1WZ​h8  (external link) Splash #2 (external link) by Franzli (external link), on Flickr

IMAGE: https://farm9.staticflickr.com/8574/16421408405_a34f968d09_o.jpg
IMAGE LINK: https://flic.kr/p/r271​B8  (external link) Splash #4 (external link) by Franzli (external link), on Flickr

IMAGE: https://farm8.staticflickr.com/7308/16420478602_56bc5f395d_o.jpg
IMAGE LINK: https://flic.kr/p/r22f​d3  (external link) Pouring water (external link) by Franzli (external link), on Flickr

Flickr (external link) |Facebook (external link) | Twitter (external link)
Canon EOS 5D Mark III | Canon EF 50mm f/1.2L | EF 35mm f/1.4L | EF 85mm f/1.2L | EF 100mm f/2.8L IS | EF 135mm f/2L | EF 300mm f/4L IS | EF 8-15mm f/4L | EF 16-35mm f/2.8L II | EF 24-70mm f/2.8L II | EF 70-200mm f/2.8L IS

  
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pwomble
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Feb 02, 2015 19:24 as a reply to  @ franzli's post |  #8520

Those are outstanding!




  
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Show us your setup and the final result!
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