extend nikon image wait time to max of 70 seconds. 30 seconds image taking and then postprocessing might take also quite some time.
extend nikon image wait time to max of 70 seconds. 30 seconds
image taking and then postprocessing might take also quite some
time.

hopefully fixes https://github.com/gphoto/libgphoto2/issues/94

gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2