Hi,
not sure whether it is possible to fix this from within MagicLantern, but as this seems to affect all Canon SLRs on which I managed to get a grip, and some of them I guess would not receive further updates from Canon any more, it would be great if it could be made possible...
Setting AutoISO to ON
and setting the AutoISO Limit to ISO6400
is great!
But it works only as long as it's without flash.
As soon as you add a flash (either builtin or EX-430/580 and probably also others)
=> The camera would limit the AutoISO to 400 and never choose a higher ISO despite the camera's AutoISO Limit is set to ISO6400
Originally seen on 550D but also checked 5DmkII, 650D
I would like to be able to use an actually working higher ISO limit than 400 together with a flash very much for the purposes of stagelight situations, where the light is mostly unpredictable. On a ballroom dancefloor with effect lighting, I now try to manually switch from ISO800 through ISO3200 in order to keep the room's original brightness in the picture according to the changing light situation, but I would rather like AutoISO to do that job for me. The flash is obviously in ETTL mode, and I set it to ETTL-1 or sometimes even ETTL-1 2/3, in order to bighten up the faces not too much.
Not even sure whether the way Canon implemented it with this strange flash-ISO400 limit, has any actual purpose, or whether one would need to consider it a Canon bug??
If this feature could be implemented, should there be two different AutoISO limits? (One for without-flash, and one for with-flash?) Or should flashing make use of the normal AutoISO limit? The latter would be good enough for me, but not sure whether others might need it differently...
Regards,
Roland