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Thread: High ISO long exposure infinity focus with Batis 25 on A7RII

  1. #1
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    High ISO long exposure infinity focus with Batis 25 on A7RII

    Following a meeting this evening I went to the museum campus in Chicago to shoot some long exposure skyline images.

    I manually focused the Batis so that it showed infinity, F8 and ISO 25600.

    Normal processing in Lightroom without any noise reduction.

    two frame pano with about 50% overlap. Lightroom says its about 10700 pixels wide by normal A7RII height.

    The thin strip of lights to the right are on Navy Pier and the sky does go black there since there are no street lights to reflect off the cloud cover. The Sodium Vapor lights have a distinct orange color reflected off the clouds.

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    Re: High ISO long exposure infinity focus with Batis 25 on A7RII

    Thanks. I like would be great to see it at a higher resolution

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    Re: High ISO long exposure infinity focus with Batis 25 on A7RII

    Here is a version shot at 100 ISO, not quite as wide a view, only 8930 pixels wide, by 4082 high.

    The exposure was about 15 seconds.



    And here are links to both full sized JPGs.

    high ISO: ISO 25600 61 MB file

    low ISO: ISO 100 12.6 MB file

    (Fixed link problem)
    Last edited by dmward; 26th August 2015 at 09:33. Reason: (Fixed link problem)
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    Re: High ISO long exposure infinity focus with Batis 25 on A7RII

    The links go to the same file. I looked at the 100 iso file 1st and was appalled at the noise (for 100 iso) so I assume they are both the 25.600 iso ...

    Edit : and looking at the waves I'm 100% sure they are

  5. #5
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    Re: High ISO long exposure infinity focus with Batis 25 on A7RII

    Yep, the files are identical.
    Frankly, I'm already appalled by the ISO 25600 file ...
    I'm sure the ISO 100 still is pretty good.

    Kind regards.
    Bart ...

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    Re: High ISO long exposure infinity focus with Batis 25 on A7RII

    Thanks for catching the link error. Cut and Paste wins again. :-)

    I fixed it.

    Yes they were both the high ISO initially.

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    Re: High ISO long exposure infinity focus with Batis 25 on A7RII

    Aside from the High ISO comparison, here is why I wanted the night images.

    The background is another image I made last night, then took it into Topaz and processed with a crayon drawing preset.

    The Porsche Spyder image was made at the Geneva Concourse Sunday. Both shot with Batis 25/2.




    - - - Updated - - -

    Quote Originally Posted by Knorp View Post
    ...appalled...
    Can you clarify?

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