Have just acquired a Bronica SQ-Ai second hand; everything makes sense to me except one aspect. Is it the case that, whatever mirror lock-up setting you have, the mirror will always fold away (fold up) when you turn the film advance sufficiently so that the shutter is cocked? (to use the term in the manual) In other words: Do you have to make your composition thru the finder with the film not quite advanced fully (while the mirror is still down), then advance the film crank to fully cock the shutter (at which point mirror lifts and you can no longer see the viewfinder image) before shooting? Or should the mirror stay down and only lift and return when you depress the shutter? Just curious if there is any fault with the model I have or if this is the standard behaviour. Or is there some way I'm handling the camera wrongly?? It seems curious to me that, if you cock the shutter fully, there is then no way to 'reverse out' of this position and look through the viewfinder again to make a (perhaps different) composition. This would suggest you must only ever cock the shutter 'at the last minute' before you shoot?? NB Have been experimenting with new acquisition with no film loaded. Perhaps it operates differently with film loaded?? Many thanks for all help! Rationale: I often like to take landscape shots, waiting and watching until some travelling clouds are in the position that makes the composition 'just so' - or cast ground shadow to make it just so. It occurs to me that if I have understood correctly that 'shutter cocked = finder view disappears', then either I have to watch through the viewfinder, then quickly cock the shutter and shoot at the moment the cloud/shadow is correct. OR I have to cock the shutter fully and just judge the cloud/shadow effect on the composition in real life, _without the benefit of the exact crop through the viewfinder. Many thanks for all help!