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Old Jan 10, 2008, 9:24 PM   #1
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I have heard a lot about flash gels, CTO etc, and I can't find these things anywhere! Any help?

thanks
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Old Jan 11, 2008, 12:35 PM   #2
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If you Google "Where to buy flash gels" you will find a lot of places.
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Old Jan 11, 2008, 12:37 PM   #3
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I've tried that, and most are for strobes. I need rectangle ones for the Sigma 530 Super. Any specific sites?
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Old Jan 11, 2008, 2:44 PM   #4
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I am shamelessly going to copy and paste someone's response from another discussion board:

Plagarizing starts here:


There are two free Rosco swatchbooks. - Not quite free--B&H charges a penny. :-)

Rosco Roscolux Swatchbook

http://www.bhphotovideo.com/c/produc...watchbook.html

Rosco Cinegel Swatchbook

http://www.bhphotovideo.com/c/produc...watchbook.html

Also, Rosco has all kinds of tutorials on how to use the filters:
http://www.rosco.com/us/technotes/index.asp

Look at page 8 of 'Filter Facts' (PDF):
http://www.rosco.com/includes/techno...erFacts_06.pdf


It lists the various "CTO" filters that can be used to convert a light of 6500k (daylight ~= a flash) to warmer color temperatures. For example so you can match the color temperature of your flash with tungsten ambient light. (Also covered on the Strobist:

http://strobist.blogspot.com/2006/03...o-correct.html )



Plagarizing ends.



The size of the swatches in the swatchbooks are 1.75" x 2.75", a good size for taping over the end of a flash.


You can also buy individual 21 inch by 24 inch sheets from B&H for $5.50. You may also be able to buy the sheets from a theater supply company, although those may be hard to find. I bought a sheet from a theater supply company, but in all of Austin Texas I only found one theater supply company, and it was basically one guy operating out of a small wharehouse. But I wanted to have the whole sheet and cut off what I needed rather than just have a small swatch in case the swatch got lost or damaged or something.
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Old Jan 11, 2008, 2:56 PM   #5
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I have been known to print my own on clear laser labels using Paint shop Pro to choose the colour, any graphics editing program would do. They stick on flash lenses OK and peel off easily and if you decide to make one permanent just stick another clear one on to protect the ink. You can get a perfect match of colour temperature this way to blend with ambient daylight or whatever.
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Old Jan 11, 2008, 4:16 PM   #6
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Thanks for both of your posts.

SteveB - I use Paint Shop Pro to, how would I go about making my own?
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Old Jan 31, 2008, 2:06 PM   #7
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fisheye4 wrote:
Quote:
Thanks for both of your posts.

SteveB - I use Paint Shop Pro to, how would I go about making my own?
Sorry for the delay in replying.

It can all be done in PSP, just create a new image the size in inches that you want (File>New). The size doesn't matter too much as the printer options let you fit a page anyway. Go to the palet on the right (probably, if you haven't moved things around) and double click on the foreground colour box (the top one of two that are about 1cm square each). A window will open where you can type in the RGB value you want to paint with.

For example, try 255, 228, 190 for a peachy colour that may cancel out a typical strong blue-tinged flash. Increase the G and B values if this turns out to be too strong. Select the spray can icon on the left and click the left mouse button in your new image window. The window should now fill up with the new colour. Then print it (File>Print select 'Fit to Page') on clear laser labels. Cut to size and stick on the flash lens.

I don't think this method will be any good for anything to stick over the camera lens if that's what you were thinking!


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