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Catalina/Capri 25/250 Sailor's Forums

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Sunrise

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redeye
Master Marine Consultant

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3474 Posts

Initially Posted - 06/01/2015 : 07:45:13

Lanier Sunrise

SO this is taken hand held with a new to me camera, a sony whatever

<<rant on >>
( Sony Cyber-shot DSC-TX30 Digital Camera, as though it matters the model cause you probably can't buy one anymore, they change models so fast ) but I digress...
<<//rant off>>

It takes like 84,000 asa and does this by taking about 6 images and "processing" them ( which means it tries to register them to each other and average the information ( median ) ..

So far this looks like crap ( well OK.. kinda like a painting ) but we will be seeing this software in our cameras ( cell phones ) very soon that will remove the signal noise and clean up the images for low light levels considerably.

I look forward to seeing some interesting night photography soon.

Ray in Atlanta, Ga.
"Lee Key" '84 Catalina 25
Standard Rig / Fin Keel

Dave5041
Former Mainsheet Editor

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USA
3754 Posts

Response Posted - 06/01/2015 : 13:25:02

Thats a lot of pixels on a slightly smaller than a half inch chip for that work. Larger pixels have better s/n ratios but lower resolution on a given sensor size. The optimum compromise for typical phone snapshots is around 5 meg on their tiny chips, but that is way to dense for low light or high brightness rage. If the camera takes a darkfield image, no light, to subtract from the stacked images it will do better. Half or full 35mm frame equivalent sensors in DSLR and a few other cameras do better in the 18-24 mp range, but they still take a fair amount of Photoshop to look their best.

Dave B. aboard Pearl
1982 TR/SK/Trad. #3399
Lake Erie/Florida Panhandle

redeye
Master Marine Consultant

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3474 Posts

Response Posted - 06/01/2015 : 14:19:47

It's gonna be interesting when they start processing from more than one sensor. Something Apple just bought into.

http://3dprint.com/59540/apple-acquires-linx/

I use a medical device now that fires near infrared laser light into tissue and measures the amount of time it takes for the reflected light to get back through different densities of tissue, and averages up to about 100 scans together. It gives us a 3d image of the tissue we are looking at in seconds. ( Ocular Coherence Tomography )

Not this but something very much like it...

https://www.youtube.com/watch?v=CaBxgkmpYow

Now that's the kinda of depth finder I want!

Ray in Atlanta, Ga.
"Lee Key" '84 Catalina 25
Standard Rig / Fin Keel

GaryB
Master Marine Consultant

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USA
4275 Posts

Response Posted - 06/01/2015 : 17:42:37

Wow that is remarkable!

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GaryB
Andiamo
'89 SR/WK #5862
Kemah,TX

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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.