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Opticallimits > Forums > Just Talk > High ISO noise vs under exposure correction (RAW)

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High ISO noise vs under exposure correction (RAW)
allanmb
Unregistered
 
#13
03-04-2011, 08:36 PM
Ok, so I did a quick test with my 7D and 85mm f/1.8. I exposed a shot correctly in fairly dim light at ISO 6400, f/1.8, 1/160. I then took another shot at ISO 1600 and pushed it 2 stops in post. Below you will find a 100% crop of each and below that you will see a link to the full size image.



I think its pretty clear to see in the crop that the noise on the pushed image is considerably more. Also the full size image shows that there is less dynamic range: you will notice that the blacks clip early around the tyres.



So to conclude, it looks like its best to use the higher ISO and let the A/D converter do the work rather than use a lower ISO and push in post.







ISO 6400

[Image: 5497284603_8ffd744d33_o.jpg]

[url="http://farm6.static.flickr.com/5094/5497871122_92f40b7fd8_o.jpg"]ISO 6400 Full Size[/url]





ISO 1600 + 2 stops

[Image: 5497878292_2a2968ac29_o.jpg]

[url="http://farm6.static.flickr.com/5300/5497876688_c38ee74755_o.jpg"]ISO 1600 Full Size[/url]
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Messages In This Thread
High ISO noise vs under exposure correction (RAW) - by btlnorway - 02-28-2011, 08:35 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-01-2011, 02:25 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-01-2011, 09:34 PM
High ISO noise vs under exposure correction (RAW) - by allanmb - 03-02-2011, 09:29 AM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-02-2011, 10:07 AM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-02-2011, 01:33 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-02-2011, 01:38 PM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-02-2011, 03:06 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-03-2011, 11:07 AM
High ISO noise vs under exposure correction (RAW) - by allanmb - 03-04-2011, 08:36 PM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-05-2011, 12:24 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-05-2011, 12:51 PM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-05-2011, 01:07 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-05-2011, 01:21 PM
High ISO noise vs under exposure correction (RAW) - by allanmb - 03-05-2011, 08:02 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-05-2011, 08:08 PM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-06-2011, 02:45 PM
High ISO noise vs under exposure correction (RAW) - by Guest - 03-06-2011, 05:42 PM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-07-2011, 08:40 AM
High ISO noise vs under exposure correction (RAW) - by allanmb - 03-07-2011, 11:53 AM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-07-2011, 12:23 PM
High ISO noise vs under exposure correction (RAW) - by allanmb - 03-07-2011, 02:23 PM
High ISO noise vs under exposure correction (RAW) - by genotypewriter - 03-08-2011, 02:06 AM
High ISO noise vs under exposure correction (RAW) - by PuxaVida - 03-08-2011, 07:35 AM

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