Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,956   Posts: 1,522,927   Online: 1187
      
Results 1 to 6 of 6
  1. #1
    Mustafa Umut Sarac's Avatar
    Join Date
    Oct 2006
    Location
    İstanbul - Türkiye
    Shooter
    35mm RF
    Posts
    3,719
    Images
    108

    Portra comes 4 stop darker from two cameras

    I have a Leica Mini Zoom and Nikon One Touch and have a Portra Seller Lab at Street.
    All other 100 ASA Films Fuji or Kodak comes normal but Portras comes 4 stop darker.

    Is there a problem at high heat Lab or my cameras ?

    Umut

  2. #2

    Join Date
    May 2006
    Location
    Aurora, IL
    Shooter
    35mm
    Posts
    1,939
    How do you know that the films are 4 stops under? You do that by looking at or measure the negatives with a densitometer or do you judge that by looking at the prints? Looking at the prints can be very misleading.
    Also excess heat tend to get the film denser (like overexposure) not thinner but for the most part it won't except change color balance.

  3. #3
    narsuitus's Avatar
    Join Date
    Nov 2004
    Shooter
    Multi Format
    Posts
    538
    How are you determining your exposures?

    Are you sure your light meter is accurate?

    How did you determine that there was a 4 f/stop difference?

    What ISO setting did you use for the Portra film?

    If you shoot the same subject on a bright sunny day and manually set all your cameras to the same exposure of f/16 at 1/125th second, will all the negatives look the same?

  4. #4
    Mustafa Umut Sarac's Avatar
    Join Date
    Oct 2006
    Location
    İstanbul - Türkiye
    Shooter
    35mm RF
    Posts
    3,719
    Images
    108
    I think it is a minilab scanner issue. I had been said to the labman that I love darker pictures and he did my wish. Because negatives look normal.

    Thank you ,

    Umut

  5. #5

    Join Date
    May 2006
    Location
    Aurora, IL
    Shooter
    35mm
    Posts
    1,939
    There is a lot of room for operator interpretation during the scanning or back in the days printing process. So the scan or print not to your liking is very much because of how the lab does it. But the 4 stops? 4 stops underexposure on color negative film you end up with almost nothing on the film.

  6. #6
    Mustafa Umut Sarac's Avatar
    Join Date
    Oct 2006
    Location
    İstanbul - Türkiye
    Shooter
    35mm RF
    Posts
    3,719
    Images
    108
    All black , only sunlighted scans means something. I gave 7 different rolls at different times and this roll ended black.
    I will walk there under July heat again.



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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