Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,821   Posts: 1,581,652   Online: 881
      
Page 2 of 2 FirstFirst 12
Results 11 to 12 of 12

Thread: Testing IR film

  1. #11
    polyglot's Avatar
    Join Date
    Jun 2009
    Location
    South Australia
    Shooter
    Medium Format
    Posts
    3,333
    Images
    12
    For sure, direct sunlight is the most-reliable approach to getting a good IR shot. I have only one counterexample and while most of the image is in the subtlety of the shade, there are still treetops in full sun there.

    I don't generally go out with the IR film unless it's Sunny-16 conditions. I have a sneaking suspicion I should try it but I don't have an IR meter and want to get the most from my few remaining rolls of IR820 in a way that I know is reliable. Maybe once I get that 70mm roll of Rollei 400...

  2. #12
    DWThomas's Avatar
    Join Date
    Jun 2006
    Location
    SE Pennsylvania
    Shooter
    Multi Format
    Posts
    2,269
    Images
    67
    I'd say you got good results. The problem with IR (er, one of the problems) is to visualize what happens with infrared film and an IR filter. Blue (sky) comes out pretty much black; green, if maybe green paint, could go pretty black. White objects and green foliage in sunlight come out pretty white; the "Wood effect" with trees looking like cotton candy. Black still comes out black. My general impression is the effective scene brightness ratio with IR is often much wider than the visual appearance would lead one to expect. I had one scene involving a river and woods on either side where the water in the foreground acted as a total sink for IR -- I shot the scene on two different days and still even massive exposure increases produced little detail in the dark (but rippled) water.

    I generally bracket a stop or two either side of my measured "optimum" and assume the percentage of "keepers" will be low!

    (But it's great when it works.)

Page 2 of 2 FirstFirst 12


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin