I wonder if that may be it. I will lower the raw file size and see if that makes a difference. As for Legacy, I have a testing protocol used for the K20D and K30 that cycles thru Native, Legacy and Gphoto and tries out functions. I recall that with Legacy, I got two Pentax K3ii tabs and no shutter action. Curiously, for both Legacy and Gphoto, the shutter release port field was blank with its corresponding lamp (green, yellow, red, etc) was unlit. I wonder if there is a /dev/tty? expert out there?

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