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Demonstration of X-Trans Under-the-hood RAW Spatial (Noise) Filtering

Started Aug 7, 2019 | Discussions thread
TOMMMMMM Regular Member • Posts: 161
Re: Some Additional Perspective On The Importance of RAW Filtering In Real Imaging

tradesmith45 wrote:

TOMMMMMM wrote:

Don't mean to hijack this thread, but I have both an X-A3 and an X-T2. I was wondering if anyone knows if the X-A3, with it's Bayer sensor, would be an improvement over the X-T2 for astro. Unfortunately, I won't have the opportunity to test this out any time soon, but it would be helpful to know for the next time I do get to go out.

Tom, it's not hard to check the A3. Take a 2-4 min. ISO 800-1600 dark frame (body cap on in dark room). Open the file w/ RAW Digger & look at the histogram. If there is filtering, the histogram will be chopped off or have steps. A dark frame from the T2 will show you what filtering looks like. Be sure to turn LENR off.

I'd offer to look at your file but am on the road for couple weeks.

Hey Tradesmith, never used Raw Digger before, but this is what I got from my X-A3 using ISO 1600 for 3 min exposure. To my eyes, it looks like there is no RAW filtering, but I'll let you chime in on that. Seems like a normal distribution of noise for a totally dark frame.

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