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Gained a few pixels

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SnowFella View Drop Down
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Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Topic: Gained a few pixels
    Posted: 31 May 2021 at 10:33
Finally got editing support from C One for my new A7RIVA and I'm finding something funny with my frame widths.
It's supposed to be 9504x6336 pixels and that's indeed what C One is giving me as a default....unless I manually adjust the crop and all of a sudden I can boost things up to 10122x6561. That's 66.4Mp in what should be a 61Mp camera

Guess this is the illusive total vs effective pixel counts, far edges doesn't look bad in any way.
 



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addy landzaat View Drop Down
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2021 at 10:53
Hmmm, interesting. Have to check what RAWTherapee does with my A7r4.
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SnowFella View Drop Down
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Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2021 at 11:05
Here's a screenshot out of C One without increasing the "crop" to unconstrained.

a7riva by Johan Olsson, on Flickr

Doesn't seem to work for all shots but the majority seem to allow it.
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Harm vb View Drop Down
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Post Options Post Options   Quote Harm vb Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2021 at 11:08
Originally posted by SnowFella SnowFella wrote:

That's 66.4Mp in what should be a 61Mp camera

Guess this is the illusive total vs effective pixel counts, far edges doesn't look bad in any way.

Same amount as my A7iii+A7Rii do have, together
Harm, with A7iii+A7Rii plus 6-400mm glass.
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SnowFella View Drop Down
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Post Options Post Options   Quote SnowFella Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2021 at 23:04
Got an explanation from DP Review, it's just how C One handles distortion correction.
With some lenses it stretches the image slightly while some compresses the image, hence why all the shots using the 24-105G at 24mm allows the "stretch" and something like the 70-200G at 200mm compresses the image slightly.
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owenn01 View Drop Down
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Post Options Post Options   Quote owenn01 Quote  Post ReplyReply Direct Link To This Post Posted: 02 June 2021 at 18:43
Originally posted by SnowFella SnowFella wrote:

Got an explanation from DP Review, it's just how C One handles distortion correction.
With some lenses it stretches the image slightly while some compresses the image, hence why all the shots using the 24-105G at 24mm allows the "stretch" and something like the 70-200G at 200mm compresses the image slightly.


So - the camera never 'lies' - it's just the software that's 'bending the truth' a little?

Best regards, Neil.
My Mantra: "Comment on other's work as you would wish to have yours commented upon". Go on - it's fun!
 



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