Peter,
You mentioned that you had your 205FCC upgrade. I am currently using a 205TCC along with 201F and 2000FCM as backup bodies. If I have the body upgraded does that mean I would lose the complete function of the TCC backs? I'm afraid to lose the Zone System function in the backs. Is this affected by the upgrade?
Evan
Hi Evan,
Sorry but I can not give you a 100% definitive answer. Since I received my CFV a couple of years ago, I have NOT used the film back. Haven't even bought any MF film and don't know if my processor is still in business. My film scanner is gathering dust.
However, I understand that the 205xCC modification does change the direction and content of the data flow between the back and the body. It is a wiring change.
In the original body / film back setup, the film back told the camera body what the ASA and zone system settings the dials on the film back were set at. This overode any default setting made with the Pr mode.
After the modification, the flow of data runs the other way and is not the same data. Now, the camera body tells the digital back when the shutter has been fired so it can run it's capture function. No ASA information is past from the back to the body. So, it is similar to using some older A series backs on the 205xCC cameras. The camera is not receiving any data from the back so it is using the ASA setting that is set in the camera by the Pr mode to do its exposure calculation. Even if you put an E series film back on the body, the camera will still know nothing about the settings on the back.
In practice, when using the CFV, this is not a problem and, in fact, can be quite helpful. By adjusting the Pr setting to a different ASA than the CFV back you can still use the zone system as you would before (e.g. light grass metered at zone 5), but get the 1 or 2 stops over-exposure that works better for digital photography. So, you don't need to remember a whole bunch of zone changes (e.g. light grass metered at zone 6 or 7).
Side Note: Of course, in any case, with the CFV, your whole approach to exposure changes. I use the spot/zone system to get close to the right setting, take a shot, and then look at the histogram to see how close I got. Then, if time permits, I'll adjust exposure and shoot another shot to get a better histogram. My old photo teacher will be turning over in his grave if he knew I was doing this, but when freed from the constraint of 12 shots per roll and with the instant histogram, it really is a better way of shooting.
For film photography, you will also need to use the Pr mode to change ASA settings and just ignore the dials on the back because the camera will be ignoring them too.
This is my understanding. Some of the more-knowledgable people on this forum may correct me if I'm wrong.
Regards
Peter