Not familiar Robot Star IIa. I use a Nikon FM, FA, Olympus OM-1, Minolta SRT201, Canon AE1, Pentax K1000. Could have fooled me you can't change film ISO on the run by two stops. Not sure what this has to do with digital or what you're trying to get at.
..::MICHAEL PENN PHOTOGRAPHY::..
Without changing the film you cannot change the ISO at all. You can only under expose or over expose.
My point is that taking photographs in virutally any situation is easier with an automated compact camera. There were no features such as exposure compensation in cameras like the Nikon FM, Olympus OM-1 and similar cameras as they were essentially mechanical devices with a meter that gave a guide to exposure. You had to change the aperture opening or shutter speed as a reaction to what you saw on the meter. This was a slow process. That didn't stop people.
Compare that to a camera like the XZ-1 which most people would have on either aperture priority or shutter priority - some even on program mode or dumbed-down iAuto mode. Now how hard is it to change the
Now you can automate and speed up the process with very little imput. How hard is it to acess a feature like exposure comentation on the XZ-1 - a single press of the rear dial up, then use left or right presses to change. I don't see what is so difficult about that.
Now changing the ISO, don't you press the OK button like other Olympus cameras to bring up the shooting menu, select ISO and then use left and right presses on the rear dial. Now if you intend to change the ISO frequently, then just leave the shooting menu on ISO - the camera will remember. If that is too difficult, use auto ISO.
Now how do you change the ISO on a film camera. Well you have to rewind the film rembering to leave the end out if you want to take the remining frames on the film, put in a new film with a different ISO rating and then you can start with your new ISO rating. Repeat the process for ever ISO change. Which is easier, the XZ-1 or a flim camera?
I wonder how of Cartier-Bresson managed?
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