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  1. Replies
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    Re: Portra 160 and 400 Reciprocity Failure

    Thank you everyone for your explanation! I understand the formula now :)

    I have been using Portra more and more for my landscape work, so this proves to be VERY handy.
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    Re: Portra 160 and 400 Reciprocity Failure

    Great chart! I look forward to this data being added to the Reciprocity app. Until now, I have simply used the Ektar numbers in the app, cross references with a chart that I found a while back and...
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    Re: Reciprocity Timer 1.0

    I have a light meter app that will take a picture of the scene and record all the relevant info including geo coordinates. If the reciprocity app did that, I would gladly pay a lot more for that...
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    Re: Reciprocity Timer 1.0

    Since you're going this far already, it would be really nice if you could add a feature that would allow it to take my camera out and snap the pictures all on its own. This would be really useful...
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    Re: Reciprocity Timer 1.0

    Provia 100F actually goes to 4 minutes before needing to account for reciprocity. It is a great color film for long exposures!

    Glad someone finally asked what Velvia filtered means. I was always...
  6. Re: Schneider Center ND Filter for Fuji G617 105mm Lens?

    Thank you for the info, heind61 and Sevo!

    Thanks to a fellow large format forum member, I was able to track down a proper fitting 77mm Heliopan 3X filter. I am one happy camper!

    I agree...
  7. Re: Schneider Center ND Filter for Fuji G617 105mm Lens?

    Excellent, thanks for the info everyone! I have been having a hard time finding a 77mm filter but I'll keep looking, and I'll take a more serious look at the Schneiders :)
  8. Schneider Center ND Filter for Fuji G617 105mm Lens?

    Hi all,

    I'm curious if anyone has tried one of the Schneider center ND filters for the 105mm Fuji G617 lens? I realize Heliopan is a good alternate option to the original Fuji center ND's, but it...
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    Re: Reciprocity Timer 1.0

    Here's Fuji's data sheet for Velvia 100. You're fine out to a minute of exposure :)

    http://www.fujifilm.com/products/professional_films/pdf/velvia_100_datasheet.pdf
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    Re: Reciprocity Timer 1.0

    I believe Velvia 100 has a reciprocity time closer to Velvia 50. I treat Velvia 100F as I treat Provia 100F in terms of reciprocity.

    Hope that helps!
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    Re: Reciprocity Timer 1.0

    Haha I was thinking the same thing :cool:
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    Re: Reciprocity Timer 1.0

    I used this app yesterday when I was shooting a beach sunset. My stopwatch is in the shop for repairs, so I found the included timer on this app to be super useful.

    Just wanted to say again, this...
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    Re: Reciprocity Timer 1.0

    Purchased and downloading right now. Great utility!
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    Re: Reciprocity failure times

    Good info. I am going to give it a try with Portra 160.
  15. Re: Filter Thread Size for Schneider-Kreuznach Super-Angulon 75mm f/8?

    Excellent. I hadn't found that section of their website. Thank you for the link!
  16. Re: Filter Thread Size for Schneider-Kreuznach Super-Angulon 75mm f/8?

    Unfortunately that chart doesn't have my lens. But all of the various 75mm lenses on that chart are also showing a 67mm filter thread size, so I'm guessing that's what mine will be as well.
    ...
  17. Filter Thread Size for Schneider-Kreuznach Super-Angulon 75mm f/8?

    Hey everyone. I've done some searching and I did find this chart: http://www.schneideroptics.com/pdfs/photo/LensCharts.pdf (the thread I found is from 2006, so I didn't want to post in such an old...
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