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FORUMS Photography Talk by Genre Wildlife Talk 
Thread started 07 Dec 2013 (Saturday) 21:07
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Flash question with telephoto

 
res
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Dec 07, 2013 21:07 |  #1

I am getting set up to shoot flash for fill with my 500mm. I will be using a 550ex flash for now. I made a flash bracket just fine but I need some information for the final dimensions. I am curious how far off the center axis of the lens the head of the flash needs to be to eliminate the red eye / steel eye situation. The commercial brackets do not seem to have much adjustment to them but it seems to me the farther the subject the higher the flash needs to be. I know the flash will only work to a certain distance but just curious if making my flash height adjustable is really needed or if a fixed height serves well enough. I will be using a Better Beamer if that makes any difference. Thanks for the help and thoughts.




  
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jhayesvw
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Dec 11, 2013 21:15 |  #2

Good question.
I wish I could help but I can say I'm interested in the answer.



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res
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Dec 12, 2013 08:38 as a reply to  @ jhayesvw's post |  #3

I may have to post in the bird section. :lol: A flash bracket is so simple and I have nothing against those who buy them but it just seems that so many of the brackets barely get the flash off the same axis camera mounted flash. By moving the flash forward it eliminates the flash casting shadows but I was just curious as to the flash height issue for red / steel eye. There has to be a few people with experience.




  
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Meanderthal
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Dec 13, 2013 09:16 |  #4

Try also searching Better Beamer in the Canon 100-400 lens sample archive:
https://photography-on-the.net …=373778&highlig​ht=100-400


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johnf3f
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Dec 13, 2013 12:30 |  #5

Here are some images of my home made flash bracket. Mine is intended to be used with a Wimberley 2 head or similar (any head that has a vertical arca compatible dovetail) and can be adjusted vertically. Please excuse the dodgy drawing but it should be sufficient for you to build one.


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Dec 13, 2013 12:32 |  #6

A few more:


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Dec 13, 2013 12:35 |  #7

Finally:
Oh yes the "Better Beamer" is home made too. It doesn't concentrate the flash as well as the BB but it is more than good enough for fill in flash and I made 2 for 8GBP.


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res
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Dec 13, 2013 16:42 as a reply to  @ johnf3f's post |  #8

johnf3f,
Thanks for the pictures and the diagram. My bracket looks about the same. I know this is not a set answer question but for the most part, how far can you throw the flash as a fill? Have you noticed any red or steal eye from your set up? Just curious. I am trying to see if making an adjustable height bracket would provide benefit or just a more complicated system since once basic height does the job. Thanks for taking the time. Much appreciated.




  
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Dec 13, 2013 17:01 |  #9

res wrote in post #16525213 (external link)
johnf3f,
Thanks for the pictures and the diagram. My bracket looks about the same. I know this is not a set answer question but for the most part, how far can you throw the flash as a fill? Have you noticed any red or steal eye from your set up? Just curious. I am trying to see if making an adjustable height bracket would provide benefit or just a more complicated system since once basic height does the job. Thanks for taking the time. Much appreciated.

Unfortunately I cannot give you any useful information as when I completed my bracket and beamer my flash died! My Canon Flash was a few years old but virtually unused, perhaps 100 cycles, so naturally as soon as I found a use for it the tube went!
I forgot to mention that if you mount the QR clamp so that it can be rotated then it can be secured to the QR plate on the lens foot and used horizontally, which should be better for hide use.


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Dec 14, 2013 07:53 |  #10

I may be able to help here .... I use a flash quite a bit with my Canon 500mm lens. Personal opinion is that it must be at least 6" to the right or left of the center axis of the lens to avoid problems with the subjects eyes. I have never had good luck with the flash directly over the lens. I use a Wimberley telephoto flash bracket with excellent results. The photo below was taken using a Canon 500mm lens. Black bears in trees against a blue sky can be a difficult metering problem for a dslr the flash is a huge aid!

IMAGE: http://www.bobhowdeshell.com/img/s8/v83/p1389448920-5.jpg

Bob
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res
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Dec 14, 2013 21:02 as a reply to  @ bhowdy's post |  #11

Bhowdy,
Thanks a ton for that information. I will definitely give that a try. The bracket I have made has plenty of room to mount it off center like you suggest. Thanks so much for the help. Are you using an extender or straight flash??




  
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johnf3f
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Dec 15, 2013 18:22 |  #12

That's handy to know - thanks bhowdy.
Good thing I made my bracket so that it could be used vertically or horizontally, now saving for a new Flash!


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bhowdy
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Dec 16, 2013 11:04 |  #13

I use a 580ex flash with a Better beamer


Bob
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agl99
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Jan 21, 2014 01:43 as a reply to  @ bhowdy's post |  #14

Your bracket should work...it works with people. ..., you might need to double check that the lens hood doesn't cast a shadow in front of the flash.




  
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Flash question with telephoto
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