CanPi
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Re: Raspberry Pi High Quality Camera

Fri Jul 17, 2020 9:25 pm

First Thumper, then Bambi. Where do you live jbeale, Disneyland? :)

Well done!

gordon77
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Re: Raspberry Pi High Quality Camera

Tue Jul 21, 2020 2:39 pm

Here's a shot with the HQ camera and Canon FD 85mm...

Reduced to 640 x 480 and a full res crop (with a bit of enhancement in GIMP)...
Attachments
rob1.jpg
rob1.jpg (51.33 KiB) Viewed 1869 times
rob2.jpg
rob2.jpg (61.89 KiB) Viewed 1869 times

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HermannSW
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Re: Raspberry Pi High Quality Camera

Tue Jul 21, 2020 4:05 pm

HermannSW wrote:
Fri Jul 03, 2020 7:42 am
So this morning when I went to bathroom I stopped, went back and moved my WoodenBoardPi with HQ camera and 35mm lens as well as zoom lens to bathroom:
Image

I was totally happy with what I got, looked at magnification only for now. I am sure I can do better with other aspects of the photo. This is full size 6.2MB 12MP photo shot:

https://stamm-wilbrandt.de/en/forum/ohr ... m.zoom.jpg

Here is 100% cutout from that photo, just the Ohrsberturm -- it is 2.3km distant from HQ camera with 35mm lens with zoom lens in series:
Image
I did order another identical zoom lens for 14$, and it arrived after only 13 days from China today.
I was surprised that looking through both lenses in series with my eye worked great.
So I captured Ohrsbergturm again, with HQ camera, 35mm C mount lens and two 14$ zoom lenses in series:
two.zoom_lenses.jpg
two.zoom_lenses.jpg
two.zoom_lenses.jpg (82.21 KiB) Viewed 1852 times

The result is good from magnification standpoint, but I was not able to set the three(!) focus settings at both zoom lenses and 35mm lens better than this:
(full resolution 12MP photo)
https://stamm-wilbrandt.de/en/forum/Ohr ... lenses.jpg
(scaled to 15%)
Ohrsbergturm.two.zoom_lenses.15%.jpg
Ohrsbergturm.two.zoom_lenses.15%.jpg
Ohrsbergturm.two.zoom_lenses.15%.jpg (8.99 KiB) Viewed 1852 times

For me the result with one 14$ zoom lens in series with HQ camera with 35mm lens is acceptable, with two zoom lenses in series it is not.
It was worth a try though ...

P.S:
I just measured length of roof edge from previous 100% cut out (188 pixels) and 12MP 100% photo (1348 pixels). That is magnification of 1348/188=7.2 ...

I know, you get what you pay for, and adding 2*14$ zoom lenses to 50$ 35mm C mount lens cannot give big magnification and sharp image.
https://stamm-wilbrandt.de/en/Raspberry_camera.html
https://stamm-wilbrandt.de/en#raspcatbot
https://github.com/Hermann-SW/raspiraw
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/working_with_FPGAs

aBUGSworstnightmare
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Re: Raspberry Pi High Quality Camera

Wed Jul 22, 2020 6:22 am

gordon77 wrote:
Tue Jul 21, 2020 2:39 pm
Here's a shot with the HQ camera and Canon FD 85mm...

Reduced to 640 x 480 and a full res crop (with a bit of enhancement in GIMP)...
@gordon77: can you post more details on your lens? Very nice picture!

gordon77
Posts: 5264
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Re: Raspberry Pi High Quality Camera

Wed Jul 22, 2020 8:33 am

aBUGSworstnightmare wrote:
Wed Jul 22, 2020 6:22 am
gordon77 wrote:
Tue Jul 21, 2020 2:39 pm
Here's a shot with the HQ camera and Canon FD 85mm...

Reduced to 640 x 480 and a full res crop (with a bit of enhancement in GIMP)...
@gordon77: can you post more details on your lens? Very nice picture!
Its an old CANON FD 85mm F1.8

with one of these adaptors https://www.amazon.co.uk/Fotodiox-Pro-A ... cs&sr=1-10 which allows you to set the aperture, best to stop it down a bit.

Here's the setup...made during lockdown with available parts !! Uses a python script to trigger on movement.
Attachments
cam02.jpg
cam02.jpg (96.02 KiB) Viewed 1746 times
cam01.jpg
cam01.jpg (81.81 KiB) Viewed 1746 times

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HermannSW
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Re: Raspberry Pi High Quality Camera

Fri Jul 31, 2020 10:56 pm

Last night I did capture moon with raspistill, with 35mm C mount lens and 50X smartphone zoom lens in series again:
viewtopic.php?f=43&t=278860&p=1705145#p1705145

Now I did use my 70mm M12 lens (3.98°) with CStoM12 adapter with HQ camera:
20200801_005107.15%.jpg
20200801_005107.15%.jpg
20200801_005107.15%.jpg (40.11 KiB) Viewed 1619 times
I used "userland/build/bin/raspistll -t 0 --focus" for focusing on the moon.
Then I realized that standard raspistill capture was way too bright.
So I did capture a sequence of shots, with 2ms, 3ms, ..., 10ms shutter time.
This is 3ms shutter time, 870x530 copy out of 12MP frame (moon diameter 414 pixels):
tst.3.png
tst.3.png
tst.3.png (232.93 KiB) Viewed 1619 times
I created animated .gif for the 9 shutter times, and realized that moon moves fast. I did capture, edit last command, change output file name and shutter time, and then capture again, so not much time between the captures:

Code: Select all

$ stat tst.?.jpg tst.10.jpg | grep Change
Change: 2020-08-01 00:18:47.488677886 +0200
Change: 2020-08-01 00:19:32.828704689 +0200
Change: 2020-08-01 00:19:47.698711486 +0200
Change: 2020-08-01 00:20:01.858717208 +0200
Change: 2020-08-01 00:20:17.688722835 +0200
Change: 2020-08-01 00:20:33.968727870 +0200
Change: 2020-08-01 00:20:48.168731710 +0200
Change: 2020-08-01 00:21:03.268735292 +0200
Change: 2020-08-01 00:21:19.798738690 +0200
$

This is the animated .gif:
Image


P.S:
I just captured Jupiter with 70mm lens, much smaller visible than moon, but much bigger than Saturn.
I captured two frames, left is 100% copy out with 10ms shutter time, and right with default raspistill shutter time:
jupiter.10ms_default.png
jupiter.10ms_default.png
jupiter.10ms_default.png (5.04 KiB) Viewed 1589 times

P.P.S:
70mm M12 lens used does cost <9$:
https://de.aliexpress.com/item/32746976750.html
https://stamm-wilbrandt.de/en/Raspberry_camera.html
https://stamm-wilbrandt.de/en#raspcatbot
https://github.com/Hermann-SW/raspiraw
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/working_with_FPGAs

hystrix
Posts: 57
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Re: Raspberry Pi High Quality Camera

Sat Aug 01, 2020 5:50 pm

Here's a photo (cropped) taken with the 16mm Telephoto Lens:

Image

I will post more images as I get them...keep an eye on my webpage for new additions :)
http://pibat.afraidofsunlight.co.uk/pi- ... -pi-camera

gordon77
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Re: Raspberry Pi High Quality Camera

Sat Aug 01, 2020 6:02 pm

hystrix wrote:
Sat Aug 01, 2020 5:50 pm
Here's a photo (cropped) taken with the 16mm Telephoto Lens:

Image
Looks good.

Jack Hogan
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Re: Raspberry Pi High Quality Camera

Mon Aug 03, 2020 9:16 am

HermannSW wrote:
Fri Jul 31, 2020 10:56 pm
Last night I did capture moon with raspistill, with 35mm C mount lens and 50X smartphone zoom lens in series again:
My attempt, 16mm kit lens at 1/8000s and about f/11 at 100%, minimally processed in Matlab.

Image

Code: Select all

raspistill -t 50000 -r -ss 125 -ag 1 -o /home/pi/Pictures/test01.jpg --focus
- - focus was not helpful, I assume because the moon was too small inside the big ROI. f/11 instead of f/8 in part because I accidentally turned the aperture ring instead of focus' in the dark.

Jack

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lpsw
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Re: Raspberry Pi High Quality Camera

Tue Aug 04, 2020 3:33 am

gordon77 wrote:
Wed Jul 22, 2020 8:33 am
Its an old CANON FD 85mm F1.8

with one of these adaptors https://www.amazon.co.uk/Fotodiox-Pro-A ... cs&sr=1-10 which allows you to set the aperture, best to stop it down a bit.

Here's the setup...made during lockdown with available parts !! Uses a python script to trigger on movement.
That is impressive.

I have the same (?) Fotobiox Canon FD to C adapter, but can't seem to figure out how to attach it to any of my 3 Canon FD lenses (from an old but great Canon AE-1 SLR.

Here are pics of one of one of the lenses, and the adapter:

https://imgur.com/tURapvY
https://imgur.com/2ZSk9Gq
https://imgur.com/VB1ZWg5
https://imgur.com/XpPxZ6f

Do I have the right adapter?
Thanks, and nice work.

Edit for spelling
Self-education is, I firmly believe, the only kind of education there is - Isaac Asimov

gordon77
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Re: Raspberry Pi High Quality Camera

Tue Aug 04, 2020 4:37 pm

With the word install on the blue ring lined up with the red dot, as shown in the first picture, the lens should then mount as it does as on the camera. Align the lens with the red dot on the front of the adaptor.

Then rotate the blue ring to set the aperture.

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lpsw
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Re: Raspberry Pi High Quality Camera

Tue Aug 04, 2020 6:57 pm

gordon77 wrote:
Tue Aug 04, 2020 4:37 pm
With the word install on the blue ring lined up with the red dot, as shown in the first picture, the lens should then mount as it does as on the camera. Align the lens with the red dot on the front of the adaptor.

Then rotate the blue ring to set the aperture.
Thanks Gordon. Got it attached.
It's been so long since I've used the AE-1...
Self-education is, I firmly believe, the only kind of education there is - Isaac Asimov

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HermannSW
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Re: Raspberry Pi High Quality Camera

Tue Oct 13, 2020 10:00 am

1)
Sending 40ns long low pulses to XVS of sink HQ camera allows for arbitrary long exposures, no 239 seconds upper limit anymore:
viewtopic.php?f=43&t=273358&p=1741281#p1741091
Image

2)
Jbeale did provide typical IR sensitivity diagram in this posting:
viewtopic.php?f=43&t=278016&p=1683601&h ... Q#p1683601

From page 40, imx477 spectral sensitivity characteristic:
https://www.uctronics.com/download/Imag ... 477-DS.pdf
20201013_113111.jpg
20201013_113111.jpg (133.51 KiB) Viewed 448 times
https://stamm-wilbrandt.de/en/Raspberry_camera.html
https://stamm-wilbrandt.de/en#raspcatbot
https://github.com/Hermann-SW/raspiraw
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/working_with_FPGAs

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HermannSW
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Re: Raspberry Pi High Quality Camera

Wed Nov 11, 2020 10:42 am

The captures of 2.3km distant little tower "Ohrsbergturm" with 35mm, 70mm and 35mm+zoom posted here before were impressive.
I now have a cheap (47.50$, F30070M children's) telescope and need to figure out how to make use of HQ camera with that.
Until that will be done, I did capture with 16MP smartphone lens just before eyepiece of telescope (bottom row).
I copied all images together to really big image and scaled to 25% size, allowing to compare the different magnifications.
Telescope has opening of 70 mm (2.4 inches), and focal length of 300 mm.
Magnifications with just the eyepieces delivered are 300mm/6mm=50x and 300mm/20mm=15x:
viewtopic.php?f=43&t=290331&p=1758349#p1758172
Ohrsbergturm.25%.png
Ohrsbergturm.25%.png
Ohrsbergturm.25%.png (227.69 KiB) Viewed 207 times
https://stamm-wilbrandt.de/en/Raspberry_camera.html
https://stamm-wilbrandt.de/en#raspcatbot
https://github.com/Hermann-SW/raspiraw
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/working_with_FPGAs

gordon77
Posts: 5264
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Re: Raspberry Pi High Quality Camera

Wed Nov 11, 2020 11:04 am

With telescopes you have a few choices:

1. Remove the scope eyepiece and place the pi camera (no lens) at the scope focal point. This is Prime Focus. You may need extension tubes.

2. Place the camera (no lens) behind the eyepiece. Eyepiece projection.

3. Put the Pi camera, with a lens attached, looking into the scope eyepiece. Afocal / Digiscoping Imaging

https://www.televue.com/engine/TV3b_page.asp?id=85

https://astronomysource.com/2011/10/13/ ... rojection/

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HermannSW
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Re: Raspberry Pi High Quality Camera

Wed Nov 11, 2020 1:12 pm

Thank you for this great information !!

What I learned already is, that what I did to capture bottom row photos (with eyepiece and smartphone camera lens) was "Digiscoping".

I copied over your comment to the telescope thread and looked for what not to do next already:
viewtopic.php?f=43&t=290331&p=1758721#p1758721
https://stamm-wilbrandt.de/en/Raspberry_camera.html
https://stamm-wilbrandt.de/en#raspcatbot
https://github.com/Hermann-SW/raspiraw
https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter
https://stamm-wilbrandt.de/working_with_FPGAs

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