rdeloe
Well-known member
Tim Hortons? Good Sir, if the beans have not passed through the intestinal tract of a Civet Cat, I am not consuming the beverage! (OK, to be fair, if I'm travelling I will accept beans that have passed through a Raccoon.)
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It is Finally Here, 907x 100c
- Thread starter Digitalcameraman
- Start date
Steve Hendrix
Well-known member
Doppler9000
Active member
I shudder to think where coffee and raccoons co-habitate.
MGrayson
Subscriber and Workshop Member
I REALLY want a punched card reader for my laptop.
rdeloe
Well-known member
It's behind the Tim Horton's actually...
There might be IP issues, but I suspect it’s also compute bound.
You need something like an FPGA that can be set up with many compute units to do that. The CPU would struggle to handle 1e8 16 bit numbers every couple of hundred milliseconds.
Interleave memory refresh cycles, updating UI, etc. I’m sure @buildbot will have a more informed answer.
richardman
Well-known member
That's FMA, fused multiple and add. Perfect for those vector processing units, but they probably run too hot in a camera, so more likely custom ASIC
buildbot
Well-known member
1e8 16 bit numbers actually not that much to a CPU even, frame averaging is a simple op, basically just accumulate then a final divide. So roughly 200 Megaflops. A modern ARM CPU similar to the IQ4 CPU has something like 30 gflops of vector processing ability, no need for an FPGA core. An IQ4 still has both a reasonably strong CPU for the time and an FPGA.
Most FPGAs and CPUs these days have FMA instructions that would be the same performance as an ASIC, roughly. The trick is if you need to move a lot of data around or do other things, then an ASIC might make sense. The IQ4 is based on a Xilinx (now owned by AMD) Zync MPSoC, which combines a medium sized FPGA with a few ARM cores. This combo design is perfect for small run cameras, as you can build your interface logic in FPGA gateware and then the image processing and UI in the CPU cores, sharing the image data in memory, reducing the amount if data you have to shoot around.
On the other hand, it is really easy to clean the dust on a removable back.
MGrayson
Subscriber and Workshop Member
On the third hand, sometimes you only discover that it needs cleaning after the shot...
Phase One IQ140, SK35XL (yes, I sold it long ago. grrrrr...)
Somes Pond, Maine
Matt
Paul Spinnler
Well-known member
Its not your fault, you didn't know the potential in your 35 XL – it took new technology to unravel it!
mristuccia
Well-known member
If you have an Apple Silicon machine, there is a trick. Just find the Photoshop app under Applications, and set it to open with Rosetta:
Then, the first time you open the plugin you need to authorise the app in the macOS Settings "Privacy & Securiy" panel.
You need to do this for both "ALPALensautomation.plugin" and "ALPALensfilter.plugin".
Running with Rosetta will slow down Photoshop, as it runs in Intel emulation mode. So I set the "Open using Rosetta" flag only when I need to use the ALPA plugin, or any other old Intel-based plugin.
Paul Spinnler
Well-known member
The profiles in C1 are the same. They were made by the same people who did the plugin for Alpa. Why do you want to use the PS variant? Anything different, missing?
mristuccia
Well-known member
C1 with an Hasselblad raw file? Or with a TIFF file exported by Phocus? I don't think C1 can read Hasselblad RAW files nor apply lens profiles to a TIFF file.
Am I missing something here?
Paul Spinnler
Well-known member
The distortion correction profiles ... the C1 distortion correction tool was programmed by the same guys who did it for Alpa.
Alpa's tool was for a while a great marketing tool solidifying them as the choice for the uncompromising photographers.
Today everything is already in C1.
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mristuccia
Well-known member
I'm sorry but I think you've not answered my question. How can I use the C1 distortion correction tool with an Hasselblad file? I'd be happy to use C1 instead of the PS ALPA plugin.
Alkibiades
Well-known member
You can not, as C1 dont support Hasselbald Files.I'm sorry but I think you've not answered my question. How can I use the C1 distortion correction tool with an Hasselblad file? I'd be happy to use C1 instead of the PS ALPA plugin.
Paul Spinnler
Well-known member
That's why I asked – I wasn't sure what the reason is to use the Alpa tool if you have C1 and need to run PS in rosetta as a result. But of course if you have access to profiles in that tool which aren't in C1 then it makes sense.I'm sorry but I think you've not answered my question. How can I use the C1 distortion correction tool with an Hasselblad file? I'd be happy to use C1 instead of the PS ALPA plugin.
I used it many years ago, but am now on C1 100% of the time which covers Leica and Rodenstock. Didn't catch that you come from the Hassy side.
guphotography
Well-known member
You cannot use FFF files in C1, but if you export it as DNG through Phocus, then edit exif info, change camera maker "Hasselblad" to anything else, you can then open the file in C1.I'm sorry but I think you've not answered my question. How can I use the C1 distortion correction tool with an Hasselblad file? I'd be happy to use C1 instead of the PS ALPA plugin.