I am sorry Richard, I have to take issue with that statement.
Agreeably a few mechanical shutters have caused issues (as I have spoken to PeterA about this too) but to say ALL cameras will cause you a problem is incorrect and unfair.
Even the minor amount of shutters that can give incorrect timing signals, can still be used with a simple work around.
The actual white shading method in Phocus is now almost exactly the same as the Sinar solution, and can be used for tethered or untethered capture.
David
David - you have to be congratulated for the help you provide on this forum it is much appreciated. :thumbup:
Phocus allows as Bob points out a lot of the colour caste issues to be fixed. I am looking forward to testing the new Phocus white shading methodology.
All that being said - Sinar has nailed the easiest workflow on this issue up till now. Also I must say that the main reason I went to Hasselblad 40 megapixel was to avoid the mucking around that the P45+ needed - using a wake up cable....only to find that I need a similar routine with the H back -
Compared to getting no photo- any technique is worth adopting - however , it would be great if you posted a definitive link for work flow to get a white shading / calibration shot when using a H series back on an Alpa or tech camera -
we can make it a sticky!
Whilst Sinar have an easy and elegant white shading feature - I can also say the back has a lot of " eccentric" behaviour and "chunkiness" inbuilt - compared to Hasselblad elegance it is a clumsy drunken oaf in many aspects of its operation :thumbdown:....LOL
Still there is something to be said for the quality of that measly 33 megapixel file you get from Sinar ( once you get 'em) !!
You may be very right about the manual Shutter on my most used 35 Schneider digitar..I know for sure it has focus issues anyway - another reason to prefer an arTec - because the Rodenstocks are mounted better on Sinar mounts.
I look forward to being convinced otherwise - but I fear that going for a 60 megapixel back would make focus even more problematic on a tech camera ...shall we start talking pixel sizes and consequent (negative) effects that come from diffraction kicking in at lower Fstops?
Some P65+ users are having to shoot at f8 with heir Alpas - because f11 is (now) too soft..( before Doug gets too hot under the collar - teh same will hold true for the blad version of the 60 megapixel..but guys i am hapy to be shown to be wrong...and then I woudl buy into teh big boy chips...IF I coudl use them to advantage on a tech camera!!!
I dont really know how much ( negative ) news the forum can bare though - thats why I do my own tech head testing - in the main the level of understanding about the problems/challenges associated with actually getting a string of variables working sweetly from lens/shutter/camera connection/shimming/digi back timing and release/ white shading files/ alignment between all components...etc etc etc..increases with the high megapixel backs coming out..not just micro lens laden devices either...
The artEc gives me a better test bed to calibrate the whole workflow against...Plus movement(s) + an enclosed Fresnel focusing system + a rotating back
because of these positives - the camera is a no brainer -
it is the choice of back/mount to use that is trickier..
Thankfully Sinar now cater for all Sinar/Leaf/PahseOne and Hasselbald as well as V mounts.:clap: - at least that way peopel can optimise a workflow that suits their pesonal circumstance(s)