300W reflector bulbs &al.

Discussion in 'Contact Printing' started by jnanian, Oct 1, 2009.

  1. jnanian

    jnanian Advertiser Advertiser

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    i haven't bought one of these bulbs in a long time
    i use it to print on azo and long exposures on regular enlarging paper.
    does anyone know if these bulbs are still being sold?
    i know that some filament bulbs are hard to get ...
    should i stock up on these and enlarger bulbs ?

    thanks in advance!
    john
     
  2. Trevor Crone

    Trevor Crone Member

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  3. chrisf

    chrisf Member

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    John,

    I bought mine at Graingers. I think it was around $30.00. I'm waiting for Lodima Fine Art to be delivered before I stock up on any bulbs. Since the test paper was so fast I had to go to a lower wattage bulb, so I want to see how fast the new paper is. Of course if you have a big stock of Azo you already know the speed.

    chris
     
  4. henrysamson

    henrysamson Subscriber

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    I use a 150 Watt incandescent reflector flood and find with Lodima processed in Amidol and FP4+ processed in Pyrocat HD that I get paper d-max through the B+F of the film with a 12 second exposure (normal film processing). The light is about 2 feet above the paper. So a 300 Watt may not be needed. For Efke PL-100 (normal film processing) it took 35 seconds as the B+F was much greater.

    I had replaced several of these bulbs with non-incandescent reflector floods a while back and kept them for printing use. So I don't know if they are readily available.

    Henry
     
  5. c6h6o3

    c6h6o3 Member

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  6. jnanian

    jnanian Advertiser Advertiser

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    thanks

    i found some ge's near me for about 1/2 that price ..
    i will be looking at them in the next few days .. i will see
    how they "expected life" stacks up with the grainger bulbs
    (they have a store near me too ) ...
     
  7. vet173

    vet173 Member

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    I ended up with a 120 watt plant bulb 5 ft from the paper. Unless you have a lot of FB+F to burn through 300 wats is too much. my times are around 15 seconds. I have six or seven bulbs laying aroung that didn't make the grade. VERY IMPORTANT, check for fall-off and hot spots. Try to pick one with the most frost. makers don't dont know squat about photography, so they don't care if the element even closely resembles centered. This is more important than the amount of light. The closer the bulb the more pronounced the effects. Even though it's only a penny for your thoughts, there's my two cents.
     
  8. jnanian

    jnanian Advertiser Advertiser

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    hi all


    i ended up going to grainger and getting one whose "expected life"
    was more than 2x the "other one" i had planned on getting ...
    i have yet to install it , now that is going to be the hard part
    because i know photographers have to do it in the dark ...

    john