Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 71,523   Posts: 1,572,309   Online: 829
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1

    Join Date
    Dec 2008
    Location
    Georgia, USA
    Shooter
    35mm
    Posts
    216

    Portra 400 Enlightenment

    Don't get caught in a rut. I've been trudging along and pushing film when developed corresponding to the underexposure thinking I was doing pretty good...... Then in a related post PE enlightened me on certain qualities of Portra regarding it's ability to give a descent up to two stop underexposed image without push processing. I tried it, I liked it. I'm sure this attribute of Portra 400 is common knowledge here but for some reason I never tapped into any of that information before PE's suggestion. And now I'm kicking myself for not coming to this epiphany sooner. I can shoot ISO 200 through 1600 on the same roll of Portra 400 film and expect good results. Nice!! This makes film choice for many situations quite a bit easier.....

  2. #2
    benjiboy's Avatar
    Join Date
    Apr 2005
    Location
    U.K.
    Shooter
    Multi Format
    Posts
    7,034
    I always shoot films at the box speed unless I have a good reason to do otherwise, I get excellent results with all my cameras with Portra 400 doing this, but it's nice to know the latitude is there if I make a mistake.
    Ben

  3. #3

    Join Date
    Dec 2008
    Location
    Georgia, USA
    Shooter
    35mm
    Posts
    216
    I shoot a lot in lower light, sports and events, etc. At a night ball game I need at least 1/250th for the action shots typically wide open but I can use 1/30th for stationary subjects and stop down a bit. This allows me to shoot at the rated ISO until I "have" to underexpose to get the action shot right. I can get the action shots at ISO 1600 without compromising the shots that I can get at the box speed on the same roll. It's like the best of both worlds.
    Last edited by Lamar; 03-26-2014 at 04:59 PM. Click to view previous post history.

  4. #4

    Join Date
    Feb 2010
    Shooter
    Medium Format
    Posts
    623
    I use Portra 400 quite a lot, it seems one barely has to meter or adjust exposure at all. I just tend to give it as much exposure as I can, and photos seem to turn out OK.

  5. #5

    Join Date
    Feb 2006
    Location
    Hawaii
    Shooter
    35mm RF
    Posts
    716
    Could you please provide a link to PE's comments about Portra? He's a wealth of knowledge thanks!

  6. #6
    Sirius Glass's Avatar
    Join Date
    Jan 2007
    Location
    Southern California
    Shooter
    Multi Format
    Posts
    13,402
    Quote Originally Posted by benjiboy View Post
    I always shoot films at the box speed unless I have a good reason to do otherwise, I get excellent results with all my cameras with Portra 400 doing this, but it's nice to know the latitude is there if I make a mistake.
    I only shoot film at box speed. There is no reason to over expose. PE has stated that he shoots Porta 400 at 320.
    Warning!! Handling a Hasselblad can be harmful to your financial well being!

    Nothing beats a great piece of glass!

    I leave the digital work for the urologists and proctologists.

  7. #7
    Roger Cole's Avatar
    Join Date
    Jan 2011
    Location
    Suburbs of Atlanta, GA USA
    Shooter
    Multi Format
    Posts
    4,132
    You get less grain (and yes I know the C41 dye clouds aren't really grains so "apparent grain") with slightly lower contrast when you overexpose C41 and it's stupid-hard to overexpose so much a good print can't be made, so I always aim for generous exposure in my metering techniques with C41 but that said I do set meters at box speed.


    Sent from my iPhone using Tapatalk

  8. #8

    Join Date
    Dec 2008
    Location
    Georgia, USA
    Shooter
    35mm
    Posts
    216
    Here's the thread: PE was responding to some questions I had about using dilute Rodinal in conjunction with normal C-41 process to improve shadow grain in pushed Portra 400. His comments were basically stating why push Portra when all it does is increase contrast. I found his statements to be accurate and can obtain as good, if not better, results from Portra underexposed by 2 stops and not pushed than pushing it 2 stops. Athiril was able do some experimenting to show that a hybrid Rodinal / C41 process for 400 film underexposed 3 stops does result in finer grain and better shadow detail than a normal C41 process, 3 stop push or not. I'll try that at some point as well since Portra 400 looks bad to me at ISO 3200.

    http://www.apug.org/forums/forum40/1...tra-400-a.html

    Quote Originally Posted by RidingWaves View Post
    Could you please provide a link to PE's comments about Portra? He's a wealth of knowledge thanks!

  9. #9
    Andre Noble's Avatar
    Join Date
    Dec 2004
    Location
    Beverly Hills, CA
    Shooter
    Medium Format
    Posts
    220
    No! Negative film should not be underexposed. Doing so is just a dead end gimmick - like those guys that take a perfectly good computer and over clock the processor or guys that put huge wheels on small cars and trucks.

    If anything, slightly overexpose color negative film, especially for portraiture.

  10. #10
    Athiril's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne, Vic, Australia
    Shooter
    Medium Format
    Posts
    2,627
    Images
    28
    Quote Originally Posted by Andre Noble View Post
    No! Negative film should not be underexposed. Doing so is just a dead end gimmick - like those guys that take a perfectly good computer and over clock the processor or guys that put huge wheels on small cars and trucks.

    If anything, slightly overexpose color negative film, especially for portraiture.
    They aren't taking a 'perfectly good computer', they've built it themselves. And it isn't a dead end gimmick. There are specific chips that are fantastic for overclocking with significant performance gains.



    There are specific neg films that handle underexposure well and are consistent and reliable. It's far better than not having a shot at all.

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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