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  1. Replies
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    Re: BTZS and Blue streaks, also drying issues.

    I've found that sometimes solutions don't get behind film when in the tubes. This doesn't affect development but it can make the back of the film base harder to clear. Using a hypo clear helps as...
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    BTZS ExpoDev v1.1 is now available

    ExpoDev v1.1 has been released and is available now in the iTunes app store. This update improves the bellows factor calculator to support more calculation methods (by distance, extension or...
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    Re: Paul's Random questions #1

    I'll answer #2: Yes, you should have a much better idea of what is going on for push-processing roll film. At the very least you'd get a more exacting film speed to use. What you won't get however is...
  4. Re: BTZS + Modern Incident Meter w/ Digital Readout

    It's been interesting for me too, I haven't really looked at the Plotter code in many years now. ExpoDev on that other hand, well that's been my life for the last 7 months or so getting it out there...
  5. Re: BTZS + Modern Incident Meter w/ Digital Readout

    Yes, if a user really needs to manage flare precisely they could perform a test to determine the amount of flare for their conditions, equipment, etc..

    For me with modern lenses, I typically use...
  6. Re: BTZS + Modern Incident Meter w/ Digital Readout

    So I'm not sure I am following "which has already been compensated for."

    Plotter's simulation model of Flare is only enabled when the user specifies a flare density value during analysis, which...
  7. Re: BTZS + Modern Incident Meter w/ Digital Readout

    When the Flare amount is zero, ExpoDev just uses the EFS data as exported from Plotter (which has no Flare model applied since it was stripped before export). EFS points as exported by Plotter may be...
  8. Re: BTZS + Modern Incident Meter w/ Digital Readout

    From what I remember in talking with Phil at workshops, this was his point: accurate pre-visualization is tough to get right. BTZS Incident metering was developed to make it easier to get...
  9. Re: BTZS + Modern Incident Meter w/ Digital Readout

    I can answer this one for both Plotter and ExpoDev:

    Flare in ExpoDev is rather simple. The Film Profiles that are exported from Plotter contain no flare information at all (it always gets stripped...
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    BTZS Users Group on Facebook

    There's a new Facebook group for BTZS users now. All are welcome to join to share info, thoughts, and ideas about BTZS.

    https://www.facebook.com/groups/BTZS.users/
  11. Re: BTZS ExpoDev for iOS is now available in the iTunes store

    ExpoDev can be thought of as the companion app for Plotter users. As such it has existed on several platforms over the years as technology has shifted (Palm, Pocket PC, and now iOS). ExpoDev was...
  12. Re: BTZS ExpoDev for iOS is now available in the iTunes store

    Not currently. An Android version will be produced when there is sufficient demand to cover the costs of development, but there has been very little demand vs. the iOS version.

    The one other huge...
  13. Re: BTZS ExpoDev for iOS is now available in the iTunes store

    Ben, I appreciate your suggestions and thoughts but as others have pointed out, Plotter is the core of the BTZS methodology and ExpoDev can be thought of as the companion field app.

    BTZS Film...
  14. Re: BTZS ExpoDev for iOS is now available in the iTunes store

    ExpoDev does require BTZS film profiles to calculate an exposure, it cannot do so without them. It also cannot just log exposure info without first calculating it. It was designed for BTZS...
  15. Re: BTZS + Modern Incident Meter w/ Digital Readout

    fyi, this feature will be coming to the new version of ExpoDev.
  16. Re: BTZS ExpoDev for iOS is now available in the iTunes store

    The connection between this app and the book is, I worked with Phil Davis (book author) for a number of years creating the supporting software for the BTZS methodology. I am the author of Plotter for...
  17. Re: BTZS ExpoDev for iOS is now available in the iTunes store

    Yes, you need an iOS device that can run OS version 4.3.3 or later. Here is Apple's list of devices that support that:

    • iPhone 4S
    • iPhone 4
    • iPhone 3GS
    • iPad 2
    • iPad
    • iPod touch (4th...
  18. Re: BTZS ExpoDev for iOS is now available in the iTunes store

    Thanks I really appreciate that!
  19. BTZS ExpoDev for iOS is now available in the iTunes store

    I am happy to announce that BTZS ExpoDev for iOS v1.0 has been approved and officially released. It won’t be searchable in iTunes for a few days or so, but in the meantime you can use these direct...
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    ExpoDev's new Depth of Field calculator

    I've posted a new article on ExpoDev's new Depth of Field calculator that explains how to get the most out of it.
    ...
  21. How ExpoDev for iOS corrects for reciprocity failure

    I wrote up a short article on how ExpoDev corrects for reciprocity failure when calculating exposures. I believe it to be quite unique as the only exposure calculator I know of that corrects for...
  22. Re: More on ExpoDev for iOS (iPhone and iPod Touch)

    There are some screen shots of the pre-beta app on my blog.The beta isn't too different that what you see here: http://blog.mutable.net/post/2011/12/16/ExpoDev-for-iOS-early-preview.aspx

    ExpoDev...
  23. Re: More on ExpoDev for iOS (iPhone and iPod Touch)

    Plotter is a Windows only app but it runs fine under any of the various schemes for running Windows apps on a Mac (Parallels, Crossover, boot camp, etc...).

    As far as integration, you do need your...
  24. How ExpoDev works with film test data for iPhones & iPod Touches

    I've gotten this question a few times now, so I wrote up a quick blog post on working with film test data and getting that data into ExpoDev for iOS devices.


    How ExpoDev works with personal...
  25. More on ExpoDev for iOS (iPhone and iPod Touch)

    I've started a new series of articles on ExpoDev for iOS where I'll cover features, how it works, and what makes ExpoDev so unique as an exposure calculator.

    Here's a snippet, with a series of...
  26. ExpoDev for iPhone/iPod Touch - looking for beta testers

    ExpoDev, the exposure calculator for the BTZS system is nearing release.

    I am looking for beta testers for ExpoDev for the iPhone and iPod Touch. If you are interested in being a beta tester and...
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    BTZS ExpoDev for iOS enters beta testing

    I'm happy to announce that BTZS ExpoDev for iOS (for iPhone and iPod Touch devices) has been released to beta testing.

    This is a completely new and redesigned version of ExpoDev that has many new...
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    Re: BTZS Expo/Dev Software Survey

    For those of you interested in ExpoDev for iOS (iPhone and iPod Touch devices), the new version has entered Beta testing. Details can be found here over in the BTZS.org discussion forum for ExpoDev...
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    Re: BTZS Expo/Dev Software Survey

    Since this is a request that I've seen a few times over the years, I'll provide an answer: how hard would it be to port WinPlotter to the MAC.

    The WinPlotter program is written in C++ using the...
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