not really, much of the final result is dependent on scanning & post processing anyway. but workflow works, at least for me.
still working on fine tuning to get better consistency.
yup i agree with you on neg film "over-exposure" in general, but really depends what you're exposing for..
however i disagree that 645 is a waste of time, depends on what kind of application & output/look you're after i guess. you've used the contax 645 with the zeiss glass i believe, i'm sure you can tell the difference compared to even the best 135 has to offer.
perhaps my shots/processing aren't good examples, but I've seen enough to be convinced. anyway I've only touched on the contax 645 system, so not sure if you meant in general or specifically the contax.. not too many choices anyway.
I had the Contax 645. Later I bought the 645 AF D and really tried out with a JB wedding photographer. Also sold it to someone in KL.
In terms of process flow, it is less efficient and not much advantage in the final product. The Contax was prone to failures and I had my share with it.
In the older film days where C41 or E6 process was more tight from RGB, 645 still was not a popular choice.
Now with C41 process labs doing very poor jobs, unless you want to move on to D back, the Contax system start to show problems, especially consistency.
Since you are still young and strong, the Contax seems ok for you. But when you hit a latter age, you will start to have issues.
Yes the Zeiss glass are good, but Mamiya lenses are also not far behind. Many can anytime make images using my Mamiya TLR or 7 that rival Zeiss.
The Contax Planar at F2 sounds more superior than the rest at F2.8, but in execution you should know its just fun to use.
The good 645 system is actually the PhaseOne/Mamiya 645. Its a modern setup with digital readiness and logically priced.
Autofocus wins by 100 miles, and accessories are still much cheaper than Contax (film insert new is only 1/3 the price of OLD Contax).
Run a roll of Fuji 400H on the PhaseOne/Mamiya 645, its much easier to use and produces excellent results.
In summary, the Contax is an expensive toy. The price just going insane. I sold it with no regrets.
Provided C41 is properly done, the 135 and 645 has no much difference by inspection.
Nikon or Canon made many excellent F1.4 AF lenses that can piss the old Zeiss off by a far margin.
Now with Nikon D800 and the latest new optics, it challenges a lot of old tales.
In the old Contax club days, we have already compared a lot of large prints. I still have some model shoots that I can show you one day.