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    Site Restore ?

    On the positive side, we have lost Billy!
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    Forum Issue - People Can’t Join

    I suspect the getdpi mail server may not have SPF and DKIM set up correctly. Our photo club email server had the same problem with gmail.
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    A visit to Berlin with 907x 100C

    Great images! I love the yellow train trail in particular!
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    Fun with Medium Format FILM Images!

    That looks like 3 pairs of people interacting. The first pair are having a deep conversation. Flower 2 looks thoughtful. The second pair looks like a parent and child. Flower 4 seems to be saying “What do you mean, I can’t go?”. Flower 3 looks stern! The last pair need no explanation -...
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    Looking to replicate telephoto panos in a single frozen moment with a high resolution back or large format film

    Now I understand what you’re trying to do. A couple of IQ4 150s would give you plenty of resolution, but I think it would be impractical. If you want wide enough coverage, you’d have to use relatively wide angle lenses, which will vignette. You will then need multiple LCC frames, for each...
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    Looking to replicate telephoto panos in a single frozen moment with a high resolution back or large format film

    Hi A quick back of the envelope calculation: 24 frames with 30% overlap would be equivalent of about 16 frames with no overlap. The Leica 180 has a 10 degree Field of view in the vertical position. So, would be the equivalent to 160 degree field of view. I think you’d be hardpressed to...
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    Fun with MF images 2025

    Hi Ed To me it sort of feels like a huge flying machine coming in. Perhaps a sequel to “Independence Day“! I’m curious - without the shift, do you remember if the lights were level? Or is it the inevitable rectilinear distortion from such a wide angle lens? Whatever the reason, I think it...
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    Fun with Medium Format FILM Images!

    Wow! That film must have been manufactured over 60 years ago!
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    Architecture image editing for high DR

    Take a look at the dynamic range curves for the cameras you want to compare at https://www.photonstophotos.net/ Multiple cameras an be selected in the graph.
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    Fun with MF images 2025

    These Valencians are crazy! For background information, please see https://en.wikipedia.org/wiki/Fallas IQ4 150 dual exposure on Cambo Actus with SK 120N That structure was taller than the building the firemen are hosing down!
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    Choosing a better medium and telefoto lens for product photography

    Thanks Rod! Good to know!
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    Long live technical cameras and digital view cameras!

    You’re absolutely right! I never thought of a stack as a light field. More computational photography ideas for phone cameras to implement! Just like “portrait mode”, you could have shift mode that uses the angle the phone is tilted to straighten buildings. And a tilt and swing mode to...
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    Hasselblad Composer Tool

    put it out as open source perhaps?
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    Behind the scenes

    A bit of fun with some dried flowers. And the setup: SK Makro Symmar HM 120 on Cambo Ultima 45, IQ4.
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    The 16-Bit Fallacy

    I remember reading a more technical Phase One paper on the design of the IQ 260 sensor. I need to search the World Wide Web to see if I can find something similar from Sony for the IQ4 150 sensor. This thread has piqued my curiosity!
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    The 16-Bit Fallacy

    Is the data readout destructive? If the sample and hold is sufficiently stable, they could quantise the data multiple times to reduce ADC noise?
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    The 16-Bit Fallacy

    Now, I’m curious about the difference between 16 bit and 16 bit extended modes on the IQ4 150. 1.1 fps vs 0.7 fps. Based on the DR charts for this DB at photonstophotos, 14 bits should be enough!
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    Fun with MF images 2025

    That’s a good sturdy tripod!
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    Getting the best performance

    Thank you Rob! As usual, an excellent write up! I presume the long extension amplified the “defect” on the lens board, leaving the lens with a very small tilt? I use a Cambo Actus, and the standard rail limits my use of long lenses. I was considering getting a spacer to move the digital...
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    Fuji GFX 100s: Blurred image parts

    Have you tried different RAW processors? Turned off noise reduction?
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