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Old Sep 12, 2013, 2:22 AM   #1
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Default EM1 - ISO1600 sample

Have a look at this EM1 sample at ISO1600. I'm assuming its an OOC jpeg and is taken with one of the M43 lenses.

http://www.imaging-resource.com/PROD.../YP1010018.HTM

http://www.imaging-resource.com/PROD.../YP1010039.HTM

What do you guys think .. ?
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Old Sep 12, 2013, 3:03 AM   #2
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The first pic is an awful shot to assess noise control- given the very dark conditions- and the fact that the exposure was 1/8th sec f/2...
The second was shot at 1/5th sec f/4- again not the speed required for a crisp shot.
From what I can see however- just a tad heavy on the NR maybe..?
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Old Sep 12, 2013, 1:56 PM   #3
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Simon

I was a little surprised with how heavy the NR is at ISO1600 seems to be way more than what I was hoping to see.
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Old Sep 12, 2013, 9:55 PM   #4
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You guys need to check out the high ISO shots posted right here at Steve's initial review of the M1.
http://www.steves-digicams.com/camer...hotos-276.html
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Old Sep 13, 2013, 2:52 AM   #5
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Quote:
Originally Posted by HarjTT View Post
Simon

I was a little surprised with how heavy the NR is at ISO1600 seems to be way more than what I was hoping to see.
likewise
what I actually want to see is the noise, then try to clear it up myself
then get confused and drift off into Sony advertisements

elsewhere DPR have a 'Take 2' in progress on M1 AF
theres a sequence of horsy shots with a woman wearing some kind of medieval bag and you can download some of them full res. Supposed to be all but the second batch dont work (typical)

http://www.dpreview.com/previews/olympus-om-d-e-m1/7

once again theyve managed to get every Oly psycho on the planet plugged into a bad energy field ready to put the zap on Askey's former universe.

I wonder if it will go any different this time ?
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Old Sep 13, 2013, 4:08 AM   #6
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Hey hartj,

Those two pics looks bad in my eyes.
Since Olympus will not make a new DSLR, got that in my mail this morning, I'm starting to questioning myself if I'm not better of selling my complete Olympus gear and make a switch to another brand.
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Old Sep 13, 2013, 7:45 AM   #7
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I was expecting the ISO1600 to be pretty good .. like ISO400 on the E3, esp considering the EM1's using Sony's latest sensor. Those two pics have been blasted with NR and smoothed over completely.
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Old Sep 13, 2013, 8:49 AM   #8
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Remember theres that relationship between bit depth, ISO and apparent noise

One thing M5 was good at was blocking up shadows to reduce the really ugly noise in dark parts of an image.
The rest of it got noisier as ISO went up in an ordinary but efficient way.
The experience was such that it actually produced more DR par equivalence to APS and FF, IOW comparable settings.

So while it wont go shot for shot, it can defeat D600/D800 using equivalent values, and that difference gest stronger the higher the ISO.
What happens at base ISO is its strangled for bit depth, so DR throttles back to what the bit depth can accommodate.
As ISO rises DR lessens, so the full spectrum of DR can be better afforded. Otherwise it would have more than the 12.3 stops DR, more like 14.

I think its likely to have the same properties as other Oly cams, with ISO cocked off 1/3 stop the wrong side, the digital analogue thing.
So some ISO discipline is probably required.

Realistically, while noise increases per scene per ISO, theres a practical ceiling for a given scene
jpegs dont in this case make a good example of higher ISO

Last edited by Rriley; Sep 13, 2013 at 9:35 AM.
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Old Sep 13, 2013, 12:40 PM   #9
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Guys, the 6 photos here at Steve's Digicams look better to me. They are from ISO 1600, 2500, 6400, and 25600. What do you see when you study them??

http://www.steves-digicams.com/camer...hotos-276.html



Here is one at 1600:
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Old Sep 13, 2013, 1:04 PM   #10
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definitely better, but it is overall a brighter image
really who knows what is going on with jpeg

I think its going to be no worse than M5 and really thats fine
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