Thank you all for your valuable feedback and postings .
A little bit to my photographic background .
I am working with HASSELBLAD cameras and an SWC for more than 20 years and with an ARCA SWISS 4x5 field camera for more
than 12 years now .
Using all available accessories for proper focusing for both camera systems , including the hyper focal method for the SWC , I obtained the desired sharpness in most cases . If not , I found , that I did something wrong . But that was , when I was still shooting with film .
Now , I have taken the plunge into digital for MF since the CFV-16 is on the market .
The desire for real WA digital photography made me end up with an ALPA12SWA + a CFV-39 + a RODENSTOCK DIGARON-S 4,5/28mm about half a year ago .
I also got a RODENSTOCK APO-GRANDAGON 45mm + a SUPER ANGULON XL 72mm adapted to use with the ALPA .
The digital back adapter is shimmed by an ALPA technician to perfection and I use the ALPA , up to now , only from a tripod and for WA lenses .
For focusing , I currently use the HASSELBLAD SWC screen adapter (split screen ACUTE MATTE) + HM2 or RMfx viewer or a little RF from chinese manufacturer FOTOMAN .
I am not very happy with the HASSELBLAD screen adapter solution , and therefore will have a look to the ALPA GG + loupe solution .
But it is very expensive .
The distance scale of the DIGARON-S 28mm lens , for example , just shows
for longer distances 5m and the next is infinity .
Between these two positions is only very little space , and I find it very difficult to transfer an estimated or measured value to that scale , if the distance is within that range . It is simply estimation as well .
On the other side , I found , that focusing for a digital MF device is much more critical than for film .
Therefore , you might now understand , why I asked :
HOW DO YOU FOCUS WITH YOUR ALPA .
Here an example :
View attachment 32219
The bricks of the building are sharp , while the tiled roof of the little "tower" on the left is tack sharp .
The difference in distance will be about 2-3meters .
I used aperture f16 and according to the hyper focal method , all objects are within the DOF .
Should the tiles and bricks be of the same sharpness ? ? ?
The image is taken with the 4,5/28 DIGARON-S .
Here an example taken with the APO-GRANDAGON 4,5/45mm .
(even not beeing a "digital" lens , that lens is superb)
The focus is on the grey bricks in the middle of the modern building and turns out to be tack sharp , but the foreground is not as sharp , although within DOF .
View attachment 32220
What is your experience ? ? ?
Best regards . Jürgen