Flash of FPN when powering on - normal?

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andrewmcmurry

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Flash of FPN when powering on - normal?

PostSat Jan 26, 2019 7:06 pm

Is it normal to have a flash of intense FPN when powering on, only to have it disappear a few seconds after? Here's a video:



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Uli Plank

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Re: Flash of FPN when powering on - normal?

PostSun Jan 27, 2019 2:39 am

While I haven't observed it like that, any CMOS sensor is very sensitive to temperature and will only perform well at the intended operating level.
Now that the cat #19 is out of the bag, test it as much as you can and use the subforum.

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JoshMallett

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Re: Flash of FPN when powering on - normal?

PostSun Jan 27, 2019 3:35 am

Mine definitely does this ...curious as to why myself...

Really hoping for BRAW to help fight the FPN
My video work: https://www.JoshuaMallett.com
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Liam O'Brien

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Re: Flash of FPN when powering on - normal?

PostSun Jan 27, 2019 12:04 pm

My 4.6K EF does a similar thing, but it's just the vertical lines of the sensor and it appears before the image of the scene. I don't know why either, but it doesn't seem to be a problem..?
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Sean van Berlo

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Re: Flash of FPN when powering on - normal?

PostSun Jan 27, 2019 1:17 pm

Maybe that's before the black shading kicks in?
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andrewmcmurry

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Re: Flash of FPN when powering on - normal?

PostSun Jan 27, 2019 6:11 pm

Liam O'Brien wrote:My 4.6K EF does a similar thing, but it's just the vertical lines of the sensor and it appears before the image of the scene. I don't know why either, but it doesn't seem to be a problem..?


Yeah, doesn't seem to be a problem. That's why it's so odd to me. Just curious to know what causes it to happen.

Thanks for the responses!
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