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FORUMS Photo Sharing & Visual Enjoyment Fashion, Editorial & Commercial
Thread started 20 May 2017 (Saturday) 08:51
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Night portraits

 
KatManDEW
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May 20, 2017 08:51 |  #1

Playing with night portraits. Had to bump the ISO to get some background exposure, and that resulted in having trouble getting the flash power low enough. Any suggestions?

This shot was with a Orlit RT 610 in a 48 inch softbox.

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PhotosGuy
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May 20, 2017 09:41 |  #2

KatManDEW wrote in post #18359023 (external link)
Playing with night portraits. Had to bump the ISO to get some background exposure, and that resulted in having trouble getting the flash power low enough. Any suggestions?

This shot was with a Orlit RT 610 in a 48 inch softbox.

thumbnailHosted photo: posted by KatManDEW in
./showthread.php?p=183​59023&i=i262949655
forum: Fashion, Editorial & Commercial

How about a neutral density (ND) gell on the flash? Theatrical supplies are some good places to find them in big sheets:
http://www.mainstage.c​om/CatalogFiles/ColorM​edia.pdf (external link)


FrankC - 20D, RAW, Manual everything...
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KatManDEW
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May 21, 2017 08:06 |  #3

PhotosGuy wrote in post #18359040 (external link)
How about a neutral density (ND) gell on the flash? Theatrical supplies are some good places to find them in big sheets:
http://www.mainstage.c​om/CatalogFiles/ColorM​edia.pdf (external link)

Thank you for the reply and the link. I wondered about using a gell.




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gonzogolf
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May 21, 2017 22:18 |  #4

Or use a slower shutter speed to get the ambient instead of high ISO. Then the flash can work within it's normal range.




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KatManDEW
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May 24, 2017 11:48 |  #5

gonzogolf wrote in post #18360122 (external link)
Or use a slower shutter speed to get the ambient instead of high ISO. Then the flash can work within it's normal range.

I was worried about going lower with the shutter speed because it was windy and the wind was blowing her hair around.




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KatManDEW
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May 24, 2017 11:50 |  #6

PhotosGuy wrote in post #18359040 (external link)
How about a neutral density (ND) gell on the flash? Theatrical supplies are some good places to find them in big sheets:
http://www.mainstage.c​om/CatalogFiles/ColorM​edia.pdf (external link)

How do you hold the gels in front of the strobe?




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PhotosGuy
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Post has been edited 6 months ago by PhotosGuy.
May 24, 2017 11:57 |  #7

KatManDEW wrote in post #18361986 (external link)
How do you hold the gels in front of the strobe?

I use tape with a filter hood when the filters that came with it aren't enough. Or you could make a holder. Isn't photography supposed to be a creative endeavor? ; )

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EDIT: Just found sporadic's "Gel / Film holder for Cokin P (3D Printed)"

FrankC - 20D, RAW, Manual everything...
Classic Carz, Racing, Air Show, Flowers.
Find the light... A few Car Lighting Tips, and MOVE YOUR FEET!
Have you thought about making your own book? // Need an exposure crutch?
New Image Size Limits: Image must not exceed 1280 pixels on any side.

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Left ­ Handed ­ Brisket
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Post has been last edited 6 months ago by Left Handed Brisket. 2 edits done in total.
May 24, 2017 12:22 |  #8

KatManDEW wrote in post #18361984 (external link)
I was worried about going lower with the shutter speed because it was windy and the wind was blowing her hair around.

The main subject is lit by the flash, so for the most part, the length of the flash is what will determine whether motion blur is present in the photo.

Nice pic!


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gonzogolf
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May 24, 2017 22:30 as a reply to KatManDEW's post |  #9

Flash freezes motion so the shutter speed is a non factor.




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KatManDEW
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May 25, 2017 11:44 |  #10

Left Handed Brisket wrote in post #18362013 (external link)
The main subject is lit by the flash, so for the most part, the length of the flash is what will determine whether motion blur is present in the photo.

Nice pic!

Thank you!

I wonder at what point the shutter speed would be low enough that motion blur from ambient light would become a factor?




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Left ­ Handed ­ Brisket
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May 25, 2017 15:45 |  #11

KatManDEW wrote in post #18362794 (external link)
Thank you!

I wonder at what point the shutter speed would be low enough that motion blur from ambient light would become a factor?

That is dependent on ambient light levels and the overall exposure settings. Well, plus the amount the subject is moving.

If ambient is high relative to flash, the movement effect is called ghosting

Flash times vary too ... manufacturers usually publish that info.

For the most part it is just super fast and not an issue.


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trailblazer
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May 26, 2017 19:29 |  #12

KatManDEW wrote in post #18362794 (external link)
Thank you!

I wonder at what point the shutter speed would be low enough that motion blur from ambient light would become a factor?

It depends. Was there ambient light falling on her such as from a street light? If there was, and it was strong enough, there may be some impact; but you never know, sometimes a little motion blur in the hair, or in the clothing if it was a flowing dress, with everything else looking frozen can be cool too.




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gonzogolf
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May 27, 2017 04:07 |  #13

Generally you only have to worry about ghosting (blur from motion) when the flash is less than 2 stops brighter than ambient. In the case of the shot above it really wouldn't matter because of the difference in ambient/flash ratio and the fact that there is little motion to combat.




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KatManDEW
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May 30, 2017 08:09 |  #14

trailblazer wrote in post #18363778 (external link)
It depends. Was there ambient light falling on her such as from a street light? If there was, and it was strong enough, there may be some impact; but you never know, sometimes a little motion blur in the hair, or in the clothing if it was a flowing dress, with everything else looking frozen can be cool too.

Yes there was some ambient from the street light. Good thoughts about the little bit of motion blur. Thank you.




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KatManDEW
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May 30, 2017 08:10 |  #15

gonzogolf wrote in post #18364010 (external link)
Generally you only have to worry about ghosting (blur from motion) when the flash is less than 2 stops brighter than ambient. In the case of the shot above it really wouldn't matter because of the difference in ambient/flash ratio and the fact that there is little motion to combat.

That sounds like a good rule of thumb. Thank you.




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Night portraits
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