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Recent content by BarbaraArmstrong

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    Sigma sd Quattro Images

    Scho/Carl, thanks for the reply! Those are some nice IR images. I do prefer the higher wavelength cutoff. I take it you have found it requires a longer exposure than, say, something at 650? I have very much enjoyed getting some infrared captures, and ensuing lovely prints, but haven't done...
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    Sigma sd Quattro Images

    Earlier commentary I've seen on the SD Quattro has expressed skepticism that an infrared capture is possible, by removing the thin internal dust cover/ir filter over the sensor, as one could do with the SD1 and earlier Sigma interchangeable lens cameras. But each of these commentaries has...
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    "Capturing Infrared"

    Graham, the color image "sings." It draws one's eyes to the wedding party, while yet leaving the trees as the major player. Absolutely lovely! (And I'm normally a b&w IR person.) --Barbara
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    "Capturing Infrared"

    Thor, what an image!! The creative side of your brain obviously operates very well. I enjoy viewing the moon, so this had particular appeal for me. I also want to thank you for your comments on focus; this is the aspect of IR that I most need to figure out. --Barbara
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    "Capturing Infrared"

    Rafael, thanks for your response; it got me thinking, and I would like to understand this. I began to experiment with IR two years ago, with a Sigma SD-14 with the IR-cut filter removed (easy to do yourself on this camera). With the visible-light-blocking filter attached outside the lens...
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    "Capturing Infrared"

    I'm not surprised that it is a clean green (e.g., grass) that should be used for white balance as, at least at the higher cut-off levels (those not yielding the false color effects), it is green subjects that render as white in black & white conversions. I imagine that this has something to do...
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    "Capturing Infrared"

    Thank you, Don and Rafael, for your additional posts. This is certainly making me think about how I might proceed with further IR shooting. I love the conversions to b&w where I have nice contrast to start with. Summertime shooting has always been somewhat dismaying as broad swaths of green...
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    "Capturing Infrared"

    I'm sorry not to see more responses here as I would look forward to more information on experiences with IR digital capture. Thanks, Don, for your front-page piece, and I hope there will be more. I know there is a focus difference between visible light and IR. What I don't know, and would...
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    Photo book library - missing

    It's a large volume; I just don't know how comprehensive it is. I have a copy. Ask away if you have any questions before deciding whether to buy. --Barbara
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    Photo book library - missing

    The Museum of Modern Art (MOMA) in New York published a large hard-bound volume of a large body of his photographic work in 2010, in conjunction with their exhibition that spring/summer.
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    DPx sharpening?

    I'll assume you're talking about the Merrill version of this camera (as I don't have experience with its predecessor), and the simple answer is YES. The more complicated/complete answer is that, compared with the files from other cameras I have used, these files require much less or even no...
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    Sigma DP series

    For UHDR - Welcome to the club! -- both GetDPI and the subset of DPMerrill owners/users. I think most of us with the DPxMerrills go around with extra batteries. At least they are relatively small, too, just like the cameras. When I look at your workflow, I notice that you are doing two jpg...
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    Sigma DP2 Merrill shots

    Quentin, BTW, did the police return your gear, so that now you have TWO of these lovelies? --Barbara
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    Sigma DP2 Merrill shots

    Quentin, I just got back to your post about the theft from your London flat. I am impressed and amazed at the police work. And I hope you are drawing some solace from the knowledge that the culprit isn't still out there doing this to others (and using your equipment!). I will add that I am...
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    Sigma DP2 Merrill shots

    I have both the DP2M and the DP3M and would replace both in a heartbeat. Is there something else that would give me the same or better image quality (in good light) short of medium format? The D800/D800E might squeak past (reviews would suggest), but I didn't like the handling at all. I'm not...
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