Video review - K3iii
Am 27.05.21 um 23:15 schrieb Bill:
Infrared film is effectively making something out of nothing in that it is
translating something we can't see into something we can see.
The infrared film 'sees' the IR light and turns it into something
visible. The DSLR sensor doesn't.
It just doesn't look right.
It's not a big leap to think that software can be written to emulate it.
Just like software can turn a mono recording into some kind of
left/right pingpong. May appeal to someone who doesn't know the real
thing but will never convince the serious listener.
Ralf
--
Ralf R. Radermacher - Köln/Cologne, Germany
Blog : http://the-real-fotoralf.blogspot.com
Audio : http://aporee.org/maps/projects/fotoralf
Web : http://www.fotoralf.de
On Thu., May 27, 2021, 3:50 p.m. Larry Colen, lrc@red4est.com wrote:
On May 27, 2021, at 2:15 PM, Bill anotherdrunkensot@gmail.com wrote:
It's like trying to fake stereo out of a mono recording.
Infrared film is effectively making something out of nothing in that it
is
translating something we can't see into something we can see.
It's not a big leap to think that software can be written to emulate it.
Oh wait, it already can.
It's also not a big leap to think it can't be done better than how it was
before.
bill
Nope, not how it works. If you leave the lens cap on your camera, no
matter what you to do the processing curves you aren’t going to get a photo.
False equivalence.
bill
The IR blocking filter does the same, just for light longer than about
600nm wl.
--
Larry Colen
lrc@red4est.com
--
%(real_name)s Pentax-Discuss Mail List
To unsubscribe send an email to pdml-leave@pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and
follow the directions.
On Thu, May 27, 2021 at 02:50:28PM -0700, Larry Colen wrote:
On May 27, 2021, at 2:15 PM, Bill anotherdrunkensot@gmail.com wrote:
It's like trying to fake stereo out of a mono recording.
Infrared film is effectively making something out of nothing in that it is
translating something we can't see into something we can see.
It's not a big leap to think that software can be written to emulate it.
Oh wait, it already can.
It's also not a big leap to think it can't be done better than how it was
before.
bill
Nope, not how it works. If you leave the lens cap on your camera, no matter what you to do the processing curves you aren???t going to get a photo.
Maybe not. But it's not a great leap of faith to assume that there's a fairly
strong correlation between the hues a 'typical' scene produces in an image and
the way that scene would affect a hypothetical additional IR sensor.
A processor that is capable of tracking 100 AF points in real time and doing
face recognition as well isn't likely to have much difficulty doing some kind
of prediction of what a fourth sensor might see, then 'rendering' that into
something that has the same kind of look as a real IR camera might produce.
Just getting concrete, brick, steel, and sky looking right would serve for a
lot of 'IR'-ish images.
It's not a true rendition, but it may well be at least as close to reality
as a whole lot of image renditions that are created in the darkroom.
Saw that before, didn't think it warranted posting, as it didn't
contradict anything that I expected, and, well things like; "Is the IR
recording real?"; would be answered by one thing.
Can it record IR images in RAW, (and show IR images in live view), with
an 87b filter in front of the lens?
If it can't it's not recording IR.
On 5/27/2021 10:16 AM, Paul Sorenson wrote:
--
This email has been checked for viruses by AVG.
https://www.avg.com
I wonder if you could emulate the IR filter similar to how the K3 emulates an
anti-aliasing filter? (I think that AA filter emulation feature first appeared
in the K-3)
I.E. remove the physical IR filter from the camera and have the
firmware/software "filter" the IR for "normal" photography & turn the "filter"
off when you wanted to do IR?
On 5/27/2021 16:08:38, Ralf R Radermacher wrote:
Am 27.05.21 um 18:22 schrieb Bill:
The interesting thing about computers that take pictures is that the people
who write the software can program in the characteristic curve of, in this
case, infrared film...
You can't make something out of nothing. Normal DSLRs have a strong
anti-IR-filter in front of the sensor.
If the infrared light doesn't reach the sensor you can't make it
magically reappear using a 'curve'. It will never look like the real thing:
https://www.fotocommunity.de/photo/la-bistade-fotoralfbe/32223101
It's like trying to fake stereo out of a mono recording.
Ralf
--
Ralf R. Radermacher - Köln/Cologne, Germany
Blog : http://the-real-fotoralf.blogspot.com
Audio : http://aporee.org/maps/projects/fotoralf
Web : http://www.fotoralf.de
--
Science - Questions we may never find answers for.
Religion - Answers we must never question.
Am 28.05.21 um 22:04 schrieb John:
I wonder if you could emulate the IR filter similar to how the K3
emulates an anti-aliasing filter? (I think that AA filter emulation
feature first appeared in the K-3)
The AA filter emulation is just a bit of carefully controlled blur.
Camera sensors are very sensitive to IR. Without the IR blocking filter
the sensor would be overexposed by IR light most of the time. That's why
they're built in.
Ralf
--
Ralf R. Radermacher - Köln/Cologne, Germany
Blog : http://the-real-fotoralf.blogspot.com
Audio : http://aporee.org/maps/projects/fotoralf
Web : http://www.fotoralf.de
On Fri, 28 May 2021 16:04:05 -0400
John jsessoms002@nc.rr.com wrote:
I wonder if you could emulate the IR filter similar to how the K3
emulates an anti-aliasing filter? (I think that AA filter emulation
feature first appeared in the K-3)
k5iis...
I.E. remove the physical IR filter from the camera and have the
firmware/software "filter" the IR for "normal" photography & turn the
"filter" off when you wanted to do IR?
On 5/27/2021 16:08:38, Ralf R Radermacher wrote:
Am 27.05.21 um 18:22 schrieb Bill:
The interesting thing about computers that take pictures is that
the people who write the software can program in the
characteristic curve of, in this case, infrared film...
You can't make something out of nothing. Normal DSLRs have a strong
anti-IR-filter in front of the sensor.
If the infrared light doesn't reach the sensor you can't make it
magically reappear using a 'curve'. It will never look like the
real thing:
https://www.fotocommunity.de/photo/la-bistade-fotoralfbe/32223101
It's like trying to fake stereo out of a mono recording.
Ralf
On Sat, 29 May 2021 07:23:41 +0530
Subash Jeyan pdml.live@gmail.com wrote:
On Fri, 28 May 2021 16:04:05 -0400
John jsessoms002@nc.rr.com wrote:
I wonder if you could emulate the IR filter similar to how the K3
emulates an anti-aliasing filter? (I think that AA filter emulation
feature first appeared in the K-3)
k5iis...
you are right. it did appear in the k3 first.
I.E. remove the physical IR filter from the camera and have the
firmware/software "filter" the IR for "normal" photography & turn
the "filter" off when you wanted to do IR?
On 5/27/2021 16:08:38, Ralf R Radermacher wrote:
Am 27.05.21 um 18:22 schrieb Bill:
The interesting thing about computers that take pictures is that
the people who write the software can program in the
characteristic curve of, in this case, infrared film...
You can't make something out of nothing. Normal DSLRs have a
strong anti-IR-filter in front of the sensor.
If the infrared light doesn't reach the sensor you can't make it
magically reappear using a 'curve'. It will never look like the
real thing:
https://www.fotocommunity.de/photo/la-bistade-fotoralfbe/32223101
It's like trying to fake stereo out of a mono recording.
Ralf