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rfsIII

rfsIII

Lives in United States Midland, KY, United States
Joined on Sep 9, 2006

rfsIII's recent activity

  • Thank you for bringing objective measurement to the difficult question of tripod evaluation. There's nothing more satisfying than the ka-snick of a camera firing when it's solidly attached to a...

  • Correct, but that's not what these people are talking about. For them, lens equivalence is a BUYING tool. It's NOT a shooting tool. It's a metric to make intelligent choices about tradeoffs to...

  • Here's the question that all this raises for me....does noise increase at a linear rate with exposure time? Lets say your sensor introduced 1 unit of noise when you take a shot at f/8 ISO 100 and...

  • Here's the question that all this raises for me....does noise increase at a linear rate with exposure time or does it stay the same and only is affected by ISO? Lets say your sensor introduced 1...

  • That is the best idea I've heard in this entire discussion. Stick to the one point that people agree on and forget about trying to convert people on the others.

    No one is going to change their...

  • That is the best idea I've heard in this entire discussion. Stick to the one point that people agree on and forget about trying to convert people on the others.

    No one is going to change their...

  • Commented on Quick Review: That Steady Thing article

    This is one of those great simple innovations that you can't appreciate unless you've watched $5000 worth of camera and lens on what you thought was a carefully propped monopod start sliding slowly...

  • There is nothing simple about optical science especially at the level we're discussing. But I get the point. For whatever reason you're not going to reveal the name of anyone in your circle who has...

  • The problem is that the equivalence evangelists don't work in the field of optics or sensor design so it is impossible for them—or us—to know what gaps there are in their theories.

    For instance,...

  • This is my point. No one involved in promulgating this theory has said anything about their relevant scientific or engineering credentials. Supporters just keep saying it's common sense. I haven't...

  • This is my point. No one involved in promulgating this theory has said anything about their relevant scientific or engineering credentials. Supporters just keep saying it's common sense. I haven't...

  • There must be an professor of imaging science out there somewhere who can be hired by DPR to write a nice counterpoint article that will untangle this topic and bring sanity to what is essentially...

  • There must be an professor of imaging science out there somewhere who can be hired by DPR to write a nice counterpoint article that will untangle this topic and bring sanity to what is essentially...

  • There must be an professor of imaging science out there somewhere who can be hired by DPR to write a nice counterpoint article that will untangle this topic and bring sanity to what is essentially...

  • Great point about the vertical axis. But I'm with you, wide angle is better especially when you can contrast close subject with distant background.

  • All lensmakers overstate the aperture. If you read lens reviews most lenses labeled f/2.8 are actually around f/3.2. But if you're metering through the lens it doesn't make any difference the meter...

  • The de facto standard for stills in the film era was 8x10; when I started working in the mid-90s the standard was 4x5, which slowly morphed to 2 1/4 square, then 645 and then medium-format digital...

  • What really bugs me about this whole story is that it is not up to the usual standards of DPR journalism.
    The writer naively buys into the nomenclature and conclusions of the "lens equivalence"...

  • So, Mr. Butler, now that you have spent your day off posting answers to the comments for this story you know first-hand what people mean when they say "no good deed goes unpunished."

  • I want to know when they're going to make an adapter so I can use this as a back for my 4x5 view camera.

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Total messages 0
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Total comments 376
Total likes 672
Last post 2 days ago
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Photos uploaded 1
Last upload Sep 24, 2010
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