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March 2025 Image and Video Thread

Travis Butler said:
Do you have any de-noise tools? If you'd like, link me one of those totality raw's and I can try running it through the one I use.
Click to expand...

I don't use anything, generally. There's a BlurXterminator plug-in in PixInsight I use for deep-space astro shots, but in general I try keeping the ISO setting low to prevent noise from being generated in the first place - it's a relic from my film days, I guess.

Dunno if this will work, but there's an RW2 file here:
 
Last weekend I had a short studio shoot with a very nice young lady. She is 21, what is not believable in some of the pictures...

Pictures with S1R, Sigma 1.4/85 DGDN and Sigma 1,2/50 DGDN
Available light from window
Photoshop with Nik SilverEfex

P2_49420 30x45sw.jpg
  • Panasonic - DC-S1R
  • 85mm F1.4 DG DN | Art 020
  • 85.0 mm
  • ƒ/1.4
  • 1/500 sec
  • Pattern
  • Auto exposure
  • ISO 100


P2_49449 30x45sw.jpg
  • Panasonic - DC-S1R
  • 85mm F1.4 DG DN | Art 020
  • 85.0 mm
  • ƒ/1.4
  • 1/400 sec
  • Pattern
  • Auto exposure
  • ISO 100

P2_49501 30x45sw.jpg
  • Panasonic - DC-S1R
  • 50mm F1.2 DG DN | Art 024
  • 50.0 mm
  • ƒ/1.2
  • 1/125 sec
  • Pattern
  • Auto exposure
  • ISO 100
 
The Rigger said:
I don't use anything, generally. There's a BlurXterminator plug-in in PixInsight I use for deep-space astro shots, but in general I try keeping the ISO setting low to prevent noise from being generated in the first place - it's a relic from my film days, I guess.

Dunno if this will work, but there's an RW2 file here:
Click to expand...


Well, nuts. It looked like noise that On1 was able to do a pretty good job with on my pics, but this was the best I could get from it:

20250314-_1020217.jpg
  • 100-400mm F5-6.3 DG DN OS | Contemporary 020
  • 373.0 mm
  • ƒ/6.30000019073
  • 1/8 sec
  • Pattern
  • ISO 6400


I think the ISO 6400 may have been part of it; I got the best results with shutter speed settings that kept the ISO between 800 and 1600.
 
Travis Butler said:
I think the ISO 6400 may have been part of it; I got the best results with shutter speed settings that kept the ISO between 800 and 1600.
Click to expand...
I'm sure the high ISO number contributed, given how clear the pre-totality ISO 100 shots look, but on the other hand the Read Noise in the S5's sensor is pretty low at anything above ISO 600 or so, ...

Lumix S5 — Read Noise vs ISO.png
This was taken from the Photons to Photos website's archive.
Also, between the shutter speeds I was using and the ambient temperature ("Brisk" would be an apt description), I don't believe my problem was thermal noise. I doubt the sensor had any time to heat up, even shooting at 1/5th of a second.

[*shrug*] I'm still pretty chuffed with what I got, all things considered. And I've got 5-6 years to think about how I'd do the next one differently. Your shots are impressive, so much so that I just swooped a mint-ish Tamron 55BB and a K&F Concept L-mount adaptor for myself off eBay last night. It could be the best $150 astro lens I've ever seen.
 
Some more testing with the Sigma
Overgrown
PANA2980.jpg
  • Panasonic - DC-S5M2
  • 28 - 70mm F2.8 DG DN | Contemporary 021
  • 56.0 mm
  • ƒ/2.8
  • 1/60 sec
  • Pattern
  • Auto exposure
  • ISO 200


Horse walking to me with af-c
PANA2985.jpg
  • Panasonic - DC-S5M2
  • 28 - 70mm F2.8 DG DN | Contemporary 021
  • 70.0 mm
  • ƒ/2.8
  • 1/500 sec
  • Pattern
  • Auto exposure
  • -0.7
  • ISO 100


Sun rays
PANA2981.jpg
  • Panasonic - DC-S5M2
  • 28 - 70mm F2.8 DG DN | Contemporary 021
  • 70.0 mm
  • ƒ/2.8
  • 1/4000 sec
  • Pattern
  • Auto exposure
  • -0.7
  • ISO 100
 
Nosy Heifers :) They were really cute
PANA2999.jpg
  • Panasonic - DC-S5M2
  • 28 - 70mm F2.8 DG DN | Contemporary 021
  • 28.0 mm
  • ƒ/2.8
  • 1/160 sec
  • Pattern
  • Auto exposure
  • ISO 100


And the leprechaun forest ofcourse
PANA3005.jpg
  • Panasonic - DC-S5M2
  • 28 - 70mm F2.8 DG DN | Contemporary 021
  • 70.0 mm
  • ƒ/2.8
  • 1/80 sec
  • Pattern
  • Auto exposure
  • ISO 160


PANA3011.jpg
  • Panasonic - DC-S5M2
  • 28 - 70mm F2.8 DG DN | Contemporary 021
  • 70.0 mm
  • ƒ/2.8
  • 1/125 sec
  • Pattern
  • Auto exposure
  • ISO 100
 
The Rigger said:
I'm sure the high ISO number contributed, given how clear the pre-totality ISO 100 shots look, but on the other hand the Read Noise in the S5's sensor is pretty low at anything above ISO 600 or so, ...

View attachment 9726
This was taken from the Photons to Photos website's archive.
Click to expand...

Huh... interesting. All I can say is that while I've generally had good luck with interior low-light at 6400, the other night things were looking consistently better in that 1600-and-under range... though now that I think of it, the 2000 shots weren't bad.

The Rigger said:
[*shrug*] I'm still pretty chuffed with what I got, all things considered. And I've got 5-6 years to think about how I'd do the next one differently. Your shots are impressive, so much so that I just swooped a mint-ish Tamron 55BB and a K&F Concept L-mount adaptor for myself off eBay last night. It could be the best $150 astro lens I've ever seen.
Click to expand...
Oooh. Good luck with it!

The trickiest part for me is focusing, but at least the 55BB has a nice wide focus ring that's got pretty smooth damping; DoF with the mirror lens is still very narrow, unfortunately.
 
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