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the last word

Photography meets digital computer technology. Photography wins -- most of the time.

You are here: Home / The Last Word / Sony a7R post-push closeups

Sony a7R post-push closeups

December 8, 2013 JimK 3 Comments

I zoomed in even further on the images from the preceding post, and doubled the size in both directions using nearest neighbor, so that single pixels become 2×2 blocks.

ISO 100:

bookcase a7r 100 2x cr

ISO 200:

bookcase a7r 200 2x cr

ISO 400:

bookcase a7r 4002x cr

ISO 800:

bookcase a7r 800 2x cr

ISO 1600:

bookcase a7r 1600 2x cr

ISO 3200:

bookcase a7r 3200 2x cr

If I get picky, I can say that the noise in the ISO 100 image, the one pushed by five stops, is a tad worse than the others.

This is a good example of an “ISO-less” camera.

Note: because of haste on my part in the first place, and laziness now, the images in this post, and several posts in this series, are in the ProPhotoRGB color space. They won’t look right unless you have  a color-managed browser.  Not sure if you do?  Take this simple test.

 

The Last Word

← Sony a7R post-push pictures Sony a7R SNR testing analmoly →

Comments

  1. Herb Sennet says

    December 8, 2013 at 2:08 pm

    Jim, very nice to see this!
    I posted similar results earlier today here:
    http://www.flickr.com/photos/leicasonyzeiss/

    with kind regards,
    Herb

    Reply
  2. Andrew Z says

    December 13, 2013 at 5:15 am

    Looks like there is a lot more red in the black book at iso 100. I suspect its not there at ISO1600 due to sony doing some chromo noise reduction on the raw. Are there embedded colour profiles as it displays very differently in my browser compared to any other programme?

    Reply
    • Jim says

      December 13, 2013 at 6:12 am

      Andrew, these photos are all in ProPhoto RGB, and are tagged. You’ll need a color-managed browser to see them properly. My bad; I should have converted them to sRGB. I’ll make a note in the post itself.

      Jim

      Reply

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