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Thread: Condenser lens in a snoot?

  1. #11
    Greg Davis's Avatar
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    Re: Condenser lens in a snoot?

    Anything you put in front of your light will reduce the output. If you want to concentrate the light more than just a snoot then a fresnel, as mentioned already, will work. You can also get an optical snoot. These have lenses that can focus the light for a hard edge, and some have adjustable blades to further shape the light.

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  2. #12

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    Re: Condenser lens in a snoot?

    I have a Fresnel fixture on my Hensel flash. Fresnels put light out in parallel fashion. If you focus light on a particular point might you will burn a hole in it?

  3. #13
    Mark Sawyer's Avatar
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    Re: Condenser lens in a snoot?

    A Fresnel lens might be the way to go. A condenser lens or magnifying glass may be even better options. It's going to take some experimenting. If only I had a period of time locked in my house with nothing to do...

    And Greg, yup, I've seen those. Even though they call it a "Snoot Optical Condenser", they're using the lens for projecting an image, not for condensing light. And yup, they'll cut the light intensity, where a true condenser would increase the intensity by concentrating it in a smaller area. It's like the difference between the projection lens and the condenser lens on an enlarger; they're doing completely different things.
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

  4. #14

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    Re: Condenser lens in a snoot?

    Somebody here was talking about, or selling, a device that would let you attach a Dyna-Lite flash head to a fresnel spot light originally meant for a tungsten bulb. Wish I could remember more, as my Dyna-Lites are serving as carpentry work lights these days and would be available for an interesting project...
    Reminds me of a time about 15 years back where someone at work needed to enlarge onto contact-speed material. So I rigged up a D-L 2040 head in place of the lamp house of an Omega D2V. Hooked it up to a 2000 w/s pack and told the tech to close his eyes when he fired it...

  5. #15

    Re: Condenser lens in a snoot?

    I have this in my studio but have not yet had time to start using it. I was told that it came from a London fashion photographer, living in New York City. It came with a Broncolor Hazylight, two 606 Power Packs (6000ws each) and a few 606 heads and and original 606 accessories.

    I'm using it with my much smaller old Broncolor C171 Monolight flash. It's a good match, and a very versatile light modifier.

    The second cord coiled around the light stand, is for the built-in heavy duty fan.

    Colortrans Spotlight Broncolor Pulso Adapted by Nokton48, on Flickr
    “The secret of getting ahead is getting started.”
    ― Mark Twain

  6. #16

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    Re: Condenser lens in a snoot?

    One future DIY project for me is making a broad source hard light "soft" box from a very large fresnel from a curbside junk projection screen TV... I have also stand remains from a rolling portable blackboard to make a stand for it... Figure it would be an interesting hard light for people photography...

    I would be careful with it, 'cuz I have seen vids of these used as solar ovens that MELTED a large brass padlock in 10 to 15 minutes!!! :-0

    Steve K

  7. #17

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    Re: Condenser lens in a snoot?

    hi Mark

    condensers do work with lighting
    i've used various lenses to focus down to a point source such as a condenser from a de vere enlarger

    something that is now available off the shelf are the dedo light parallel beam attachments
    these are condenser lenses that combine all the light from a spotlight into a parallel beam
    this differs from spotting the light in as that wastes most of the light much like an iris dose

    http://www.cirrolite.com/products-by...-beam-lighting

    best

    robin

  8. #18
    (Shrek)
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    Re: Condenser lens in a snoot?

    I have such an animal, it attaches to the front of a light source, has a condenser lens, and a large rotating aperture wheel (like old school WARs) with different size holes to further restrict the light. It will project a perfectly round, focused or unfocused spot on a wall depending on where I place it in front of the light source. There is no place to insert color gels or masks, so I don't think it's a theatre thing. I've never used it, I bought it off eBay some years ago because it was $10 and I was curious enough to buy it just to figure out what it is.

  9. #19

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    Re: Condenser lens in a snoot?

    Many European manufacturers offered them here is one for a macro cold light system, another one also had a diaphragm

    http://www.kaiser-fototechnik.de/en/...ge.asp?nr=5947

    I sold them for Multiblitz and Broncolor strobes way back when.
    Desisti was another source.

  10. #20

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    Re: Condenser lens in a snoot?

    I just completed a Dynalite flash conversion of a 12" focal length Century Strand Lekolite. This is an optical spot projector, originally fitted with a halogen bulb in a parabolic reflector. It is equipped with shutters and has a gobo holder slot for B Size gobos. It could also project film transparencies. Two things became apparent during the conversion to a Dynalite 2040 head. The 12" lens is "long throw". When sharply focused, it produces an 18" spot 6' from the lens or a 14" dia B gobo pattern. At 10' from the lens, the spot increases to 32" and the B gobo pattern to 23". Defocusing the lens will increase the size of the spot. The lens was also projecting the pattern of the flash tube and model lamp in the Dynalite head and this required me to install a piece of opal diffusion glass to obtain a clean image of the shutters or gobo. This light is still very bright, even with the added diffusion, and the fan-cooled head keeps temperatures down.

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