| Summary: | Support for displaying focus points of Pentax K-1 / K-1 Mark II cameras | ||
|---|---|---|---|
| Product: | [Applications] digikam | Reporter: | Milan Zamazal <pdm> |
| Component: | Metadata-Focus | Assignee: | Digikam Developers <digikam-bugs-null> |
| Status: | REPORTED --- | ||
| Severity: | wishlist | CC: | metzpinguin |
| Priority: | NOR | ||
| Version First Reported In: | 8.8.0 | ||
| Target Milestone: | --- | ||
| Platform: | Other | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
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Description
Milan Zamazal
2025-11-30 18:59:40 UTC
Oh, es wird schwierig sein, zu verstehen, wie Pentax das handhabt. Oh, this will be difficult to understand how Pentax handles it. I'm not clear on what you photographed; it seems to be a screen with the focus points. Did you draw the focus points? Pentax only uses a numbering system from 1 to about 33, no coordinates, and we don't know how they number them. The reference implementation shows that a distinction must also be made between phase and contrast focus. https://github.com/musselwhizzle/Focus-Points/blob/master/focuspoints.lrplugin/PentaxDelegates.lua Maik (In reply to Maik Qualmann from comment #1) > Oh, this will be difficult to understand how Pentax handles it. I don't think it's that difficult. > I'm not clear on what you photographed; it seems to be a screen with the > focus points. Did you draw the focus points? It's a computer screen. I put the camera on a tripod, displayed the focus points in the viewfinder, and drew their positions on the screen while looking through the viewfinder. It's inaccurate but I suppose the pattern is more or less regular, so it should be possible to extract some reasonable coordinates from it. > Pentax only uses a numbering system from 1 to about 33, no coordinates, and > we don't know how they number them. They are numbered 1-33 from top left to right and then down. That is: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 > The reference implementation shows that a distinction must also be made > between phase and contrast focus. Yes. The examples above are for phase focus. The contrast detection pattern consists of a grid of 7x5 rectangles that covers most, but not whole, of the image area. Here are some examples: http://data.zamazal.org/digikam/_K1_6906.JPG ... the central rectangle selected as the focus area and in focus http://data.zamazal.org/digikam/_K1_6907.JPG ... the top left rectangle selected as the focus area and in focus http://data.zamazal.org/digikam/_K1_6909.JPG ... the bottom right rectangle selected as the focus area and in focus http://data.zamazal.org/digikam/_K1_6908.JPG ... the whole focusable area selected and the 2nd and 3rd rectangles from left in the first (top) row and from the second row are in focus I can see some focus area coordinates in exiftool output but not the points in focus. They must be stored somewhere, the camera reports them. |
