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#11
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Hey, hook this up to a scope!
On Thu, 19 Apr 2018 03:47:17 -0700 (PDT), Quadibloc
wrote: Well, we already do have Foveon, although I wasn't impressed by examples of pictures taken with it. I think those sensors are low QE, and of course, they don't record the photon energy precisely, just one of three bands. |
#12
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Hey, hook this up to a scope!
On Thursday, 19 April 2018 06:47:21 UTC-4, Quadibloc wrote:
Well, we already do have Foveon, although I wasn't impressed by examples of pictures taken with it. Low ISO shots are decent, it's higher ones where it falls apart. |
#13
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Hey, hook this up to a scope!
On Wed, 18 Apr 2018 17:32:56 -0600, Chris L Peterson
wrote: 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. Taking many shots with slightly different focus and then combining them is becoming the standard way of taking macro images of e.g. small insects. There the change in focus is obtained by making small movements of either the whole camera or the object. The final image will have a dramatically increased depth of focus compared to a traditional single-shot image. |
#14
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Hey, hook this up to a scope!
On Wed, 18 Apr 2018 22:51:15 -0600, Chris L Peterson
wrote: Ultimately all filter systems will be abandoned. Why throw away photons? Because sometimes there are far too many photons. The H filter for solar observations for instance is a filter system which is very unlikely to be abandoned. |
#15
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Hey, hook this up to a scope!
On Fri, 20 Apr 2018 09:37:02 +0200, Paul Schlyter
wrote: Taking many shots with slightly different focus and then combining them is becoming the standard way of taking macro images of e.g. small insects. There the change in focus is obtained by making small movements of either the whole camera or the object. The final image will have a dramatically increased depth of focus compared to a traditional single-shot image. Yes, I've done quite a bit of this for macro flower images (I have a long running project of documenting all the local wildflowers- partly a science project, partly an artistic one). It's a simple technique in Photoshop, and there are quite a few dedicated tools, as well. |
#16
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Hey, hook this up to a scope!
Sounds like you guys might be interested in that new computerized camera with 16 lenses.
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#17
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Hey, hook this up to a scope!
The Light L16 is the one I was thinking of.
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#18
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Hey, hook this up to a scope!
On Tuesday, April 17, 2018 at 7:33:26 PM UTC-7, RichA wrote:
https://www.dpreview.com/news/984647...ra-for-106-000 Cheaper than what Trump payed for Stormy Daniel for night ? (o: |
#19
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Hey, hook this up to a scope!
Paul Schlyter:
Taking many shots with slightly different focus and then combining them is becoming the standard way of taking macro images of e.g. small insects. There the change in focus is obtained by making small movements of either the whole camera or the object. The final image will have a dramatically increased depth of focus compared to a traditional single-shot image. Here are some of my focus-stacked macro-photos for your viewing pleasu https://www.flickr.com/photos/primeval/15852579501 https://www.flickr.com/photos/primeval/21925559786 https://www.flickr.com/photos/primeval/14663257341 https://www.flickr.com/photos/primeval/34885963754 -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm |
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