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Hey, hook this up to a scope!



 
 
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  #1  
Old April 18th 18, 03:33 AM posted to sci.astro.amateur
RichA[_6_]
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Default Hey, hook this up to a scope!

https://www.dpreview.com/news/984647...ra-for-106-000

  #2  
Old April 18th 18, 02:36 PM posted to sci.astro.amateur
Quadibloc
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Default Hey, hook this up to a scope!

Wow. The article mentioned a camera in the $30,000-$40,000 range I didn't
know about, the Phase One medium format system. So they finally have
true full-frame sensors in the Hasselblad size; and now this, 8 by 10 glass plate size.
  #3  
Old April 18th 18, 02:44 PM posted to sci.astro.amateur
Quadibloc
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Default Hey, hook this up to a scope!

And Hasselblad itself makes the H6D-100c, so PhaseOne is not alone.
  #4  
Old April 18th 18, 04:30 PM posted to sci.astro.amateur
Chris L Peterson
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Default Hey, hook this up to a scope!

On Wed, 18 Apr 2018 06:36:33 -0700 (PDT), Quadibloc
wrote:

Wow. The article mentioned a camera in the $30,000-$40,000 range I didn't
know about, the Phase One medium format system. So they finally have
true full-frame sensors in the Hasselblad size; and now this, 8 by 10 glass plate size.


I don't really see the point, though. The main reason that large
format film was popular was that you got higher resolution. There are
plenty of ordinary digital cameras that exceed the resolution of this
8x10 format camera. In principle the huge pixels should allow for
great dynamic range, but it doesn't seem like they're really getting
much improvement there.

So it really just comes down to the mechanics of it, and the ability
to play some cute tricks with the alignment of the optics. Maybe
there's a limited market for that, although I doubt there's much you
can do with tilting the focal plane that you can't do already in
Photoshop.
  #5  
Old April 18th 18, 04:31 PM posted to sci.astro.amateur
Quadibloc
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Default Hey, hook this up to a scope!

On Tuesday, April 17, 2018 at 8:33:26 PM UTC-6, RichA wrote:
https://www.dpreview.com/news/984647...ra-for-106-000


I have now updated my web page at

http://www.quadibloc.com/other/cfaint.htm

to acknowledge the existence of the Phase One IQ3 100MP backs and the Hasselblad H6D-100c back.

John Savard
  #6  
Old April 18th 18, 04:35 PM posted to sci.astro.amateur
Quadibloc
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Default Hey, hook this up to a scope!

On Wednesday, April 18, 2018 at 9:31:00 AM UTC-6, Chris L Peterson wrote:
although I doubt there's much you
can do with tilting the focal plane that you can't do already in
Photoshop.


Although its true that image manipulation programs can distort images in a keystone shape, and dropping the front is equivalent to cropping an image made with a wide-angle lens, what with the Scheimpflug rule, tilting the back controls which elements of an image are in focus, and that can't be done after-the-fact.

John Savard
  #7  
Old April 19th 18, 12:32 AM posted to sci.astro.amateur
Chris L Peterson
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Default Hey, hook this up to a scope!

On Wed, 18 Apr 2018 08:35:12 -0700 (PDT), Quadibloc
wrote:

On Wednesday, April 18, 2018 at 9:31:00 AM UTC-6, Chris L Peterson wrote:
although I doubt there's much you
can do with tilting the focal plane that you can't do already in
Photoshop.


Although its true that image manipulation programs can distort images in a keystone shape, and dropping the front is equivalent to cropping an image made with a wide-angle lens, what with the Scheimpflug rule, tilting the back controls which elements of an image are in focus, and that can't be done after-the-fact.


Depends on the subject, and the degree of perfection desired. That's
actually not hard to do in Photoshop, although an imaging expert could
probably tell the difference. For a static scene, however, like a
landscape or architecture shot, you can do it by shooting a series at
different focus positions and combining them. In fact, many cameras
can shoot a burst sequence automatically that way, with 8-10 shots at
different focuses in just a second or so.
  #8  
Old April 19th 18, 04:31 AM posted to sci.astro.amateur
RichA[_6_]
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Default Hey, hook this up to a scope!

On Wednesday, 18 April 2018 11:31:17 UTC-4, Quadibloc wrote:
On Tuesday, April 17, 2018 at 8:33:26 PM UTC-6, RichA wrote:
https://www.dpreview.com/news/984647...ra-for-106-000


I have now updated my web page at

http://www.quadibloc.com/other/cfaint.htm

to acknowledge the existence of the Phase One IQ3 100MP backs and the Hasselblad H6D-100c back.

John Savard


If any of those alternate array schemes was really demonstrably better than Bayer, it would have replaced it by now.
  #9  
Old April 19th 18, 05:51 AM posted to sci.astro.amateur
Chris L Peterson
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Posts: 10,007
Default Hey, hook this up to a scope!

On Wed, 18 Apr 2018 20:31:23 -0700 (PDT), RichA
wrote:

On Wednesday, 18 April 2018 11:31:17 UTC-4, Quadibloc wrote:
On Tuesday, April 17, 2018 at 8:33:26 PM UTC-6, RichA wrote:
https://www.dpreview.com/news/984647...ra-for-106-000


I have now updated my web page at

http://www.quadibloc.com/other/cfaint.htm

to acknowledge the existence of the Phase One IQ3 100MP backs and the Hasselblad H6D-100c back.

John Savard


If any of those alternate array schemes was really demonstrably better than Bayer, it would have replaced it by now.


Ultimately all filter systems will be abandoned. Why throw away
photons? There are three sensor system that use tuned reflectors, so
that every photon makes it to the appropriate sensor. But ultimately,
I predict single sensor devices that record the position and energy of
each photon that strikes them. I know there are experimental devices
that do this, although making them practical is still a ways off.
  #10  
Old April 19th 18, 11:47 AM posted to sci.astro.amateur
Quadibloc
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Posts: 7,018
Default Hey, hook this up to a scope!

Well, we already do have Foveon, although I wasn't impressed by examples of pictures taken with it.
 




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