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FORUMS Photography Talk by Genre Transportation Talk
Thread started 20 Nov 2016 (Sunday) 22:32
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Does anyone here use Light banks for automotive portraits

 
bartc
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Boise, Idaho
Nov 20, 2016 22:32 |  #1

As the title states im curious who here has used them or is using them would love to pick ur brain


-Bart
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PhotosGuy
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Nov 20, 2016 23:25 |  #2

Some studios use them. We used white flats & put the light on them. Personally, I think it gives better control of the highlights because you don't have to light the whole flat & can feather the light. You can see both techniques here:
http://www.core77.com ...photography-set-ups-21672 (external link)


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bartc
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Nov 22, 2016 22:56 |  #3

Im more interested in some advice on things to watch out for etc.. in the process of building one will be 10' x 16' powered by 4 about 1600's....

Got started today and got the frame mostly built still have more to add to it

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-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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bartc
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Dec 10, 2016 19:23 |  #4

Made some progress still have toe finish up thr mounts for the lights and suspend it in the correct spot

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-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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windpig
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Dec 10, 2016 19:31 |  #5

I'm interested to see the final product and output.


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bartc
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Dec 10, 2016 19:53 |  #6

windpig wrote in post #18209208 (external link)
I'm interested to see the final product and output.

Planning to use 4 alien bee 1600s so should be plenty of light.. should be doing a test shoot tues


-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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98kellrs
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Dec 10, 2016 20:37 as a reply to bartc's post |  #7

Are you planning on aiming the lights up in the box, to reflect down on the subject,or just pointing the lights straight down and hoping the diffusion panel keeps the lighting even?


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bartc
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Dec 10, 2016 21:40 |  #8

98kellrs wrote in post #18209258 (external link)
Are you planning on aiming the lights up in the box, to reflect down on the subject,or just pointing the lights straight down and hoping the diffusion panel keeps the lighting even?

Up... my mounts aren't fixed yet I will be using a light meter to get the most even distribution I can then will lock the mounts permanently


-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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bartc
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Dec 13, 2016 22:20 |  #9

Got the box mounted figured I'd get in the shot to give a idea on sizero the ladder is a 12ft one... I'll have more detail shots of the lifting mechanism and hopefully fired up to start adjusting the position of lights to create an even distribution of light output..... then gotta work on background and floor

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-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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bartc
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Dec 14, 2016 23:07 |  #10

got the lights mounted, diffuser on(gotta adjust it to work out the wrinkles, and hand crank system in place.. did a few tests with the light meter and currently have a .8stop hot spot in the middle of the box so will do some light angle adjustments to bring every thing in closer in exposure.. cant wait to test it out on a car

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-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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Wilt
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Post has been last edited over 1 year ago by Wilt. 3 edits done in total.
Dec 15, 2016 09:54 |  #11

I assume that your 'hot spot' is when reading the face of the light panel with a reflected light spotmeter aimed at different spots on the front panel? Or is the 'hot spot' measured at subject position as you move an incident flat disk about the illuminated field?


About what kind of f/stop are you getting with an incident reading right now? (I know, the hotspot needs to be addressed) I'm curious to learn what ~2500 w-s does in that situation.

Have you considered a second diffusion layer? A slightly smaller rectangular frame with diffusion material, suspended up from the lower panel by 6-12" would really help to even things out.


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bartc
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Boise, Idaho
Dec 15, 2016 10:43 |  #12

Wilt wrote in post #18213784 (external link)
I assume that your 'hot spot' is when reading the face of the light panel with a reflected light spotmeter aimed at different spots on the front panel? Or is the 'hot spot' measured at subject position as you move an incident flat disk about the illuminated field?


About what kind of f/stop are you getting with an incident reading right now? (I know, the hotspot needs to be addressed) I'm curious to learn what ~2500 w-s does in that situation.

Have you considered a second diffusion layer? A slightly smaller rectangular frame with diffusion material, suspended up from the lower panel by 6-12" would really help to even things out.

Wilt wrote in post #18213784 (external link)
I assume that your 'hot spot' is when reading the face of the light panel with a reflected light spotmeter aimed at different spots on the front panel? Or is the 'hot spot' measured at subject position as you move an incident flat disk about the illuminated field?


About what kind of f/stop are you getting with an incident reading right now? (I know, the hotspot needs to be addressed) I'm curious to learn what ~2500 w-s does in that situation.

Have you considered a second diffusion layer? A slightly smaller rectangular frame with diffusion material, suspended up from the lower panel by 6-12" would really help to even things out.


i used my cyber commander light meter for a quick test <as my battery in my sekonic is dead.. i will test more today, i basically had the meter 3ft off the ground and took readings directly below the box at various points keeping the height the same at all times.. i think my hot spot is due to my lights being point inwards a bit too much.. i am thinking of adding another diffusion layer inside the box but i will get a car under this and see how it does.. as far as readings i had the commander set to iso100 1/250shutter at 50% power i was getting a reading of f16


-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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Left ­ Handed ­ Brisket
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Post has been edited over 1 year ago by Left Handed Brisket.
Dec 15, 2016 10:53 |  #13

I would be more concerned with the readings right at the box surface as that is what will create the reflections on the car ... and get the Seconic up and running with the dome retracted before messing around much.


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Wilt
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Post has been edited over 1 year ago by Wilt.
Dec 15, 2016 10:54 |  #14

bartc wrote in post #18213807 (external link)
i think my hot spot is due to my lights being point inwards a bit too much.. i am thinking of adding another diffusion layer inside the box but i will get a car under this and see how it does.. as far as readings i had the commander set to iso100 1/250shutter at 50% power i was getting a reading of f16

I assume you using the Alien Bees inside your DIY softbox in bare tube configuration?


You need to give me OK to edit your image and repost! Keep POTN alive and well with member support http://photography-on-the.net/forum/donate.p​hp
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bartc
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Boise, Idaho
Dec 15, 2016 13:18 |  #15

Wilt wrote in post #18213812 (external link)
I assume you using the Alien Bees inside your DIY softbox in bare tube configuration?

Yes 4 1600s controiled by the commander with 1 receiver


-Bart
5D mk3 gripped | 7D gripped |EF 28-70mm F2.8L | EF 70-200mm F2.8L IS | Tokina 11-16 f2.8 | Sigma 50mm f1.4 | 3x AlienBees B1600 | 2x AlienBees B800 | Yongnuo 568ex X2 | Sigma 530dg Super | rf-622c x4 | Bunch of light modifiers | canon sx1is

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Does anyone here use Light banks for automotive portraits
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