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Effects of using the plastic color filters on an SB910?

M_Jackson

Jackson, US
747 posts

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M_Jackson Silver Member Nikonian since 28th Oct 2005
Wed 03-Apr-13 03:14 AM

The orange and green plastic filters (tungsten and flourescent)seem fairly thick compared to a CTO gel. Is there a reference table to know how much light is lost using them? Are they the same as the old gels?

M. Jackson

M. Jackson
Jackson Hole, WY

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ScottChapin

Powder Springs/ATL, US
9068 posts

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#1. "RE: Effects of using the plastic color filters on an SB910? " | In response to Reply # 0

ScottChapin Moderator Awarded for his high level skills in various areas, including Aviation and Birds Photography Charter Member
Wed 03-Apr-13 07:30 AM

I haven't seen anything on transmission loss, but I would not think it would be materially different from the old gels. The thickness is no different from the gel retainers, as they are in essence colored retainers.

Try taking a light meter reading through an old retainer and gel versus the new filters. That should indicate any loss.

Scott Chapin
Powder Springs, GA, USA

Nikonians Team Member

M_Jackson

Jackson, US
747 posts

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#2. "RE: Effects of using the plastic color filters on an SB910? " | In response to Reply # 1

M_Jackson Silver Member Nikonian since 28th Oct 2005
Wed 03-Apr-13 04:01 PM

Scott,
It was dark last night when I posted the question. Today, I held a plastic orange filter in a window alongside one of the clear holders with a full cut orange. I can't see any difference in the two.

Thanks for the direction.

M Jackson

M. Jackson
Jackson Hole, WY

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ScottChapin

Powder Springs/ATL, US
9068 posts

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#3. "RE: Effects of using the plastic color filters on an SB910? " | In response to Reply # 2

ScottChapin Moderator Awarded for his high level skills in various areas, including Aviation and Birds Photography Charter Member
Wed 03-Apr-13 05:46 PM

You're welcome Mike. Now you have me curious. I might compare the two by taking an incident meter reading with my Gossen LunaPro. The incident sphere is so small that I think it would not be materially affected by side lighting.

Scott Chapin
Powder Springs, GA, USA

Nikonians Team Member

M_Jackson

Jackson, US
747 posts

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#4. "RE: Effects of using the plastic color filters on an SB910? " | In response to Reply # 3

M_Jackson Silver Member Nikonian since 28th Oct 2005
Wed 03-Apr-13 07:00 PM

Scott,
If you actually do the experiment, please post the results here. When I held one of the plactic filters up, it just looked so much more dense than what remembered of a full cut orange gel. Side by side, they were very close when against my front window.

M. Jackson
Jackson Hole, WY

Blog: www.bestofthetetons.com
Web Site: www.tetonimages.com

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no1yak

Essex, UK
300 posts

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#5. "RE: Effects of using the plastic color filters on an SB910? " | In response to Reply # 4

no1yak Silver Member Nikonian since 22nd Aug 2006
Thu 04-Apr-13 02:41 PM | edited Thu 04-Apr-13 02:59 PM by no1yak

Does not the SB910 em mitt pre flashes to determine the correct exposure, so placing a filter cover over the flash output no mater what colour or thickness should make no difference at all. So if there is a light transmission loss using the supplied hard filters the the reflected light from the subject will be taken in to account and will give the correct exposure.

Pete.

Essex England

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M_Jackson

Jackson, US
747 posts

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#6. "RE: Effects of using the plastic color filters on an SB910? " | In response to Reply # 5

M_Jackson Silver Member Nikonian since 28th Oct 2005
Thu 04-Apr-13 09:21 PM

no1yak,
I was shooting in manual mode with manual also set in the strobes. I was questioning whether I needed to manually adjust a bit more for the hard plastic filters, but they appear to be similar in density.

The other question I didn't ask would have been how much light is lost when you put a "full" CTO gel over a strobe?

M. Jackson
Jackson Hole, WY

Blog: www.bestofthetetons.com
Web Site: www.tetonimages.com

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no1yak

Essex, UK
300 posts

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#7. "RE: Effects of using the plastic color filters on an SB910? " | In response to Reply # 6

no1yak Silver Member Nikonian since 22nd Aug 2006
Fri 05-Apr-13 05:51 AM | edited Fri 05-Apr-13 12:42 PM by no1yak

>no1yak,
>I was shooting in manual mode with manual also set in the
>strobes. I was questioning whether I needed to manually adjust
>a bit more for the hard plastic filters, but they appear to be
>similar in density.
>
>The other question I didn't ask would have been how much light
>is lost when you put a "full" CTO gel over a
>strobe?

Sorry but you didn't say how you were using the flash. So I assumed that you were using iTTL - my mistake. By the way if you read my signature the name is Pete.

Pete.

Essex England

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G