Sony A7 II&III: Live preview and capture then camera freezes #1082
Conversation
… race in an event and 2nd capture freezes camera
|
i dont really like hardcoding camera names there. is there any other way todetect this |
|
How do you mean to detect it without retesting all Sony models with fix to prove that it won't brake current functionality ? Even I could likely detect somehow what unexpected undocumented (?) event causes this issue (price is xxx mandays). But it does not mean that another model will have equal algorithm. I see issue in A7 II & III only. A7 IV does not suffer with it and works with/without bugfix. To make 100% fix I would need reverse engineer/decompile official Sony software if there is not also hardcoded model which is totally beyond my volunteer's budget. I made fix which made gphoto2 usable with A7 II/III to capture image with live preview and we use it for massive digitalization. Without bugfix gphoto2 is useless for it. That's it. |
The bug is at least since 2.5.30 and persists in 2.5.31/head for Sony A7 III (and likely II AFAIR). Issue appears when Live preview is used together with capture image. The first capture passes but next one causes camera freeze/reboot. Bug is in event order evaluation which libgphoto is not familiar with. Note that surprisingly Sony A7 rIV which does not work with 2.5.30 (because of another issue fixed in main branch), does work without this patch in head. So event issue is likely only for III&II models.
Related issue was reported in #981