Time to be with your loved ones

Time to be with loved ones

by sat

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Take the 2-minute tour ×
Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. It's 100% free, no registration required.

Thanks to Rob Hoare's advice on cobbling together my own "overhead scanner", I would like to purchase extra lighting that I can use to illuminate documents as I photograph them. I would like to make sure they are UV-filtered (according to Fortiter's recommendation) to minimize lighting damage as they are photographed.

Is it possible to tell from the packaging/type of lightbulb if they are UV-filtered, or is it necessary that I buy an external UV filter regardless of the illumination I purchase?

share|improve this question
1  
One concern I have about using a point source to light your document is that it will result in uneven lighting with respect to the camera lens. A diffuse source would produce better results; natural light is often a good approximation. –  Gene Golovchinsky Dec 18 '12 at 1:41
add comment

migrated from genealogy.stackexchange.com Dec 18 '12 at 18:15

This question came from our site for expert genealogists and people interested in genealogy or family history.

2 Answers

up vote 4 down vote accepted

If you need to illuminate documents that you are "scanning" in such a manner, and you wish to filter UV light, a sheet of your average picture framing glass between the bulb and the document should filter out most UV light. If you are intent on filtering out as much of it as you can, you could pick up a small piece of multi-coated museum glass, which will transmit more visible light and filter out more UV light. Keep in mind museum glass is far more expensive than standard framing glass.

You will probably also want to cover the glass sheet with some thin paper in order to diffuse the light, as the comment by Gene states. You will definitely want to diffuse the light to better illuminate the subject you are photographing.

share|improve this answer
    
Is it possible to tell from the packaging if a lightbulb is UV filtered? Based on your answer, it sounds like the answer to the question is no. Can you clarify? Thanks! :) –  jmort253 Dec 22 '12 at 4:47
1  
Generally speaking, no. You might be able to find specialty bulbs that explicitly offer UV filtering, in which case I would expect it to be labeled as such. For most bulbs, though, Incandescent, CFL, and LED, none that I know of list UV filtering as a feature. –  jrista Dec 22 '12 at 18:04
add comment

I imagine that manufacturers of light sources that reduce the UV emitted would label their products prominently in order to justify the higher price. You might begin by searching on the trade name UVILEX™ 390 Z, but I am sure that there are others.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.