Long exposure success - RAW Shooting and Processing - CHDK Forum
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Long exposure success

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Offline zck

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Long exposure success
« on: 20 / February / 2016, 23:24:38 »
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Hi folks
I put my powershot elph110hs camera into long exposure shooting mode, and went into the CHDK settings and specified a 39 second exposure.
To my surprise it worked like a charm.
A pitch black sky became nearly white, all of the stars stood out, and the trees looked like they were photographed in the daytime.
I had been skeptical that this would work but I'm relieved to see that it turned out fine.
http://imgur.com/ym8gh5s
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Offline Mattinwestaustralia

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Re: Long exposure success
« Reply #1 on: 21 / February / 2016, 00:09:04 »
Pretty amazing what chdk opens up. My sx510 has gone from a 15s max now to over 10 minutes trouble is need to get a star tracker now lol.
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Offline ShahJahan

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Re: Long exposure success
« Reply #2 on: 22 / February / 2016, 10:37:09 »
Excellent. If you are doing Stars, then shoot several shots (use interval.lua script) and then create a smart object and stack them Mean/Median in Photoshop. This will get rid of the noise.

If doing long exposures for cityscapes or skylines, then shoot HDR (I use 9 images shot in RAW with 1 EV spacing = +4 +3 +2 +1 0 -1 -2 -3 -4) then merge to HDR.

I just shot a super resolution photo of my city's (Mumbai's) night skyline (using this technique = https://www.youtube.com/watch?v=0tGR-Q9Pkjc ) using my 16MP camera (PS 160IS) and resulted in a 60MP Super Resolution HDR image. It is by far the best shot I've EVER taken! I could zoom to such an extent that I never thought possible even for a DSLR!

Being Super Hi Rez, I could zoom to extreme levels
Being HDR, I could get the neon signs AND the dark buildings in the same image!
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The name ShahJahan comes from Persian, where Shah means King and Jahan means World,
so the name ShahJahan in its literal sense means King of the World.

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