On a Fujifilm X-T2, there is a 100x factor difference between the shutter speed specified and image captured.
dave@scorpii ~> gphoto2 --version
gphoto2 2.5.23
Copyright (c) 2000-2019 Marcus Meissner and others
gphoto2 comes with NO WARRANTY, to the extent permitted by law. You may
redistribute copies of gphoto2 under the terms of the GNU General Public
License. For more information about these matters, see the files named COPYING.
This version of gphoto2 is using the following software versions and options:
gphoto2 2.5.23 gcc, popt(m), exif, no cdk, no aa, jpeg, readline
libgphoto2 2.5.24 standard camlibs, gcc, ltdl, EXIF
libgphoto2_port 0.12.0 iolibs: disk ptpip serial usb1 usbdiskdirect usbscsi, gcc, ltdl, EXIF, USB, serial without locking
dave@scorpii ~> gphoto2 --set-config-value shutterspeed=10 --capture-image-and-download --debug --debug-logfile x-t2.1.log
New file is in location /store_10000001/DSCF0001.jpg on the camera
Saving file as DSCF0001.jpg
Deleting file /store_10000001/DSCF0001.jpg on the camera
dave@scorpii ~> exiv2 DSCF0001.jpg | grep "Exposure time"
Exposure time : 1/10 s
dave@scorpii ~> gphoto2 --set-config-value shutterspeed=50 --capture-image-and-download --debug --debug-logfile x-t2.2.log
New file is in location /store_10000001/DSCF0002.jpg on the camera
Saving file as DSCF0002.jpg
Deleting file /store_10000001/DSCF0002.jpg on the camera
dave@scorpii ~> exiv2 DSCF0002.jpg | grep "Exposure time"
Exposure time : 1/2 s
dave@scorpii ~> gphoto2 --set-config-value shutterspeed=100 --capture-image-and-download --debug --debug-logfile x-t2.3.log
New file is in location /store_10000001/DSCF0003.jpg on the camera
Saving file as DSCF0003.jpg
Deleting file /store_10000001/DSCF0003.jpg on the camera
dave@scorpii ~> exiv2 DSCF0003.jpg | grep "Exposure time"
Exposure time : 1 s
On a Fujifilm X-T2, there is a 100x factor difference between the shutter speed specified and image captured.