------------------ ???????? ------------------
??????:
"xuxutujin"
<xuxutu...@foxmail.com>;
????????: 2024??12??28??(??????) ????3:08
??????: "jerome.ave...@sony.com"<jerome.ave...@sony.com>;"meissner"<meiss...@suse.com>;
????: Re:RE: [gphoto-devel] ??Help??About get avaliable iso, shutterspeed,
iris value by gphoto2
Dear Jerome:
The issue we are currently encountering is the
inaccurate retrieval of adjustable parameters (ISO, Iris, Shutter Speed) on
Sony cameras.
Description of inaccurate ISO retrieval:
We conducted the tests using the A7M3 in manual mode.
The ISO range displayed by the A7M3 does not match the range obtained via
gphoto2, as shown below:
A7M3 displayed ISO range:
AUTO 50 60 64 80 100 125 160 200 250
320 400 500 640 800 1000 1250 1600
2000 2500 3200 4000 5000 6400 8000 10000 12800 16000
20000 25600 32000 40000 51200 64000 80000 102400
128000 160000 204800
Gpohto2 displayed ISO range:
AUTO 50 60 64 80 100 125 160 200 250
320 400 500 640 800 1000 1250
1600 2000 2500 3200 4000 5000 6400
8000 10000 12800 16000 20000 25600
32000 40000 51200 64000 80000 102400 128000
160000 204800 256000 320000 409600
We have found that the range obtained using gphoto2 is broader than the actual
range displayed by the A7M3. We hope to obtain a range that is consistent with
what is shown on the A7M3. (The command used
is gphoto2 --get-config iso.)
Description of inaccurate F-Number retrieval:
We observed that the aperture values displayed by the
A7M3 differ at various focal lengths, but the range of aperture values obtained
using gphoto2 remains unchanged.
The A7M3 supports f-number values from f/3.5
to f/32 when using a lens with a focal length of 28mm??
The A7M3 supports f-number values from f/5.6
to f/36 when using a lens with a focal length of 70mm??
However, the f-number values obtained using
gphoto2 do not change with different focal lengths and always display a range
of f/1 to f/64.
(The command used is gphoto2 --get-config
f-number.)
Description of inaccurate ShutterSpeed retrieval:
Similar to ISO and F-Number, the range of
ShutterSpeed obtained using gphoto2 is broader than the range supported by the
A7M3.
We urgently need your valuable advice to obtain the correct
parameter ranges. Thank you in advance for Sony's assistance.
------------------ Original ------------------
From:
"jerome.ave...@sony.com"
<jerome.ave...@sony.com>;
Date: Fri, Dec 27, 2024 06:51 PM
To: "xuxutujin"<xuxutu...@foxmail.com>;"gphoto-devel"<gphoto-devel@lists.sourceforge.net>;
Subject: RE: [gphoto-devel] ??Help??About get avaliable iso, shutterspeed,
iris value by gphoto2
Hello,
Are you using ISO Auto mode? In such case, you cannot read the current ISO
value on A7M3 with PTP ISO property D21E: getting this property will just
return ??ISO Auto?? value (0x00FFFFFF). This can only be done on more recent
cameras using PTP V3 protocol by using PTP property 0xD023
Alpha 7M3 is not supported neither by Sony Camera remote SDK.
Best regards,
Jerome Avenel
From: xuxutujin <xuxutu...@foxmail.com>
Sent: Thursday, December 26, 2024 4:15 PM
To: gphoto-devel <gphoto-devel@lists.sourceforge.net>
Subject: [gphoto-devel] ??Help??About get avaliable iso, shutterspeed, iris
value by gphoto2
Dear friends: I am a photography enthusiast and C++ developer. I encountered
some issues while using gphoto2 to connect to a Sony A7M3 camera and retrieve
settings for ISO, iris, and shutter speed. When I use gphoto2 --get-config
/main/imgsettings/iso
Dear friends:
I am a photography enthusiast and C++ developer. I
encountered some issues while using gphoto2 to connect to a Sony A7M3 camera
and retrieve settings for ISO, iris, and shutter speed. When I use gphoto2
--get-config /main/imgsettings/iso to get the ISO, it returns a very wide
range, but what I need is the current effective value. In comparison, the Sony
Camera Remote SDK provides methods to obtain the current value, the current
valid range, and all supported ranges. Could you please advise if gphoto2
offers any commands or interfaces that can similarly retrieve these different
ranges as provided by the Sony SDK? We need your helps in urgent!
My code list:
cmd : gphoto2 --get-config
/main/imgsettings/iso
code :
gp_camera_get_config(camera, &config, context);
gp_widget_get_child_by_name(config, "iso", &widget);
int count =
gp_widget_count_choices(widget);
std:map<int, const
char*> isoMaps;
for (int i = 0; i <
count; i++) {
gp_widget_get_choice(widget, i, &isoMaps[i]);
}_______________________________________________
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