Author Topic: A900 at 3200 ISO  (Read 21009 times)

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Offline rogprov

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A900 at 3200 ISO
« on: June 19, 2010, 09:07:04 PM »
Here's a brief, unscientific, test of a Sony a900 file taken at 3200 ISO. It's just a hand-held snap of a machine in my unlit workshop - there was natural light coming through a small window. I used Craw+jpg to save the photo.

This is jpeg straight from the camera of the whole file.



This is a 100% crop from the raw file converted by Adobe ACR v4.6



and here is a 100% crop from the same raw file converted with the new Sony IDC v3.2


I did no work to the files other than resizing and the converters were used at their default setting.



Roger

Offline jonjjl

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Re: A900 at 3200 ISO
« Reply #1 on: June 19, 2010, 09:44:31 PM »
Mind hosting the original RAW file and i will put it though DxO for you.
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Offline chappo1

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Re: A900 at 3200 ISO
« Reply #2 on: June 19, 2010, 11:36:25 PM »
Thanks for posting.  I have not used the Sony converter for 18 months or so but if I can find the latest version I might take another look at it...john
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Offline Stef.

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Re: A900 at 3200 ISO
« Reply #3 on: June 20, 2010, 12:43:02 AM »
Rogprov-thanks for posting this but I have to say that I can do a bit better with the Adobe RAW converter than the above. I think it's just what you are used to. FWIW: the new raw converter that ships with CS5 is absolutely outstanding.
Anyhow- there are so many different ways to deal with noise that this would be a tutorial in itself. There are colour blending modes in CS that can do wonders if needed. If I think back to my film days than I have hardly ever used real high ISO film and it's the same today- at least for me.
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Offline rogprov

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Re: A900 at 3200 ISO
« Reply #4 on: June 20, 2010, 04:43:02 AM »
Rogprov-thanks for posting this but I have to say that I can do a bit better with the Adobe RAW converter than the above. I think it's just what you are used to. FWIW: the new raw converter that ships with CS5 is absolutely outstanding.
Anyhow- there are so many different ways to deal with noise that this would be a tutorial in itself. There are colour blending modes in CS that can do wonders if needed. If I think back to my film days than I have hardly ever used real high ISO film and it's the same today- at least for me.
Stef.

Oh yes Stef I'm sure that either converter could do better but for this I just used the default settings - as would a camera reviewer. That is my point - I believe the main reason that Sony have been getting poor marks for high ISO noise is that most reviewers use Adobe ACR just at defaults and as you can see the results of doing that are not good.

Here's a link to the original Craw file for anyone who'd like to try another converter ...

http://dl.dropbox.com/u/8270802/DSC07402.ARW

« Last Edit: June 20, 2010, 05:45:56 AM by rogprov »
Roger

Offline REX (aka TG)

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Re: A900 at 3200 ISO
« Reply #5 on: June 20, 2010, 06:09:18 AM »
I am with rogprov i have  try the Sony Raw converter and is excellent very easy. I don't like spending time on computer to adjust pictures.

From the camera i must get almost perfect image settings

There are some other people who would like to spend more time and this is not my way to go
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Offline Theresa

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Re: A900 at 3200 ISO
« Reply #6 on: June 20, 2010, 01:58:17 PM »
I really don't think that comparisons made between converters used at their "default" settings is an actual representation of what the software can do.  DxO with the noise reduction tweaked (always lower than default) does a great job.  I don't shoot at 3200 though and use a max of 1600.  The Sony software's new release has just increased the default level of NR as far as I can tell.
« Last Edit: June 22, 2010, 01:24:16 AM by Theresa »
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Offline Stef.

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Re: A900 at 3200 ISO
« Reply #7 on: June 20, 2010, 04:11:41 PM »
Quote
I just used the default settings - as would a camera reviewer.

Rogprov- sorry I had missed this part. You are spot on. Using the default settings is NOT the best way forward. But than I think it actually should be like this that the Sony converter at the default settings should give you a better result. I believe once you tweak settings with pretty much any converter you can get very good results.

At some point last year I tested a whole bunch of raw converters and frankly most of them are able to do a very decent job once you start playing around with the settings. I could never confirm the apparently massive differences between raw converters some reviewers wanted me to believe to be there. My very personal opinion is that some of these raving reviews re certain raw converters are a pure marketing strategy. If one prefers the one over the other than IMHO this is personal preference but it does not mean that most raw converters can't achieve very good results. You don't need to fork out tons of money to get a good raw conversion or rid of noise.
Just my two cents...
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Offline jonjjl

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Re: A900 at 3200 ISO
« Reply #8 on: June 20, 2010, 05:11:00 PM »
Strange, i cant seem to get that file to work in DxO, i never shoot in cRAW on my a700 so never tried before.  Anyone else with DxO mind trying?  or offer a solution?
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Offline POD

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Re: A900 at 3200 ISO
« Reply #9 on: June 20, 2010, 06:50:43 PM »
You need to have the elite version of DXO to process RAW files from an A850 or A900. If you have the standard version like me you can upgrade to elite for £90.
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Offline Tom F

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Re: A900 at 3200 ISO
« Reply #10 on: June 20, 2010, 07:31:09 PM »
Like POD said you need elite version for a850 and a900. Here you go.

a99 a77 a900

Offline jonjjl

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Re: A900 at 3200 ISO
« Reply #11 on: June 20, 2010, 09:07:02 PM »
Ah that will be it then.
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Offline Stef.

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Re: A900 at 3200 ISO
« Reply #12 on: June 21, 2010, 07:27:40 PM »
O.K. I just very quickly ran the image through the new ACR 6.3 (Adobe Raw converter). 100% crop - no work done in PS. Only RAW settings tweaked.

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Offline rogprov

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Re: A900 at 3200 ISO
« Reply #13 on: June 21, 2010, 07:42:22 PM »
O.K. I just very quickly ran the image through the new ACR 6.3 (Adobe Raw converter). 100% crop - no work done in PS. Only RAW settings tweaked.

Stef.

Well done Stef - that looks the best so far :)  I really, really must find a way to get CS5 at a reasonable cost (it's 600 GBP in UK) but I've come up with one legal possibility - see how it pans out.

Roger

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Offline Stef.

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Re: A900 at 3200 ISO
« Reply #14 on: June 21, 2010, 07:43:56 PM »
Roger- the new ACR is really superb and makes noise ninja and co pretty much redundant. As said this was a quick run through and I guess with a bit more careful processing it would have been even better.
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« Last Edit: June 21, 2010, 08:20:58 PM by Stef. »
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