Great to see you here. Join our insightful photographic forum today and start tapping into a huge wealth of photographic knowledge. Completing our simple registration process will allow you to gain access to exclusive content, add your own topics and posts, share your work and connect with other members through your own private inbox! And don’t forget to say hi!
That brochure is a bit out of date - as the newest generation HR Rodenstocks (like the 90mm HR 'Alpagon') are not listed in it, and they are definitely best at wide open f5.6 to f8, and clearly degrade due to diffraction at f11.According to Rodenstock they perform best stopped down. Apo Sironar Digital at f11, the newer designs at f8. Wide open performance is impressive though.
+1 ....I find best results in the f8-9.5 range, and 7-8 is nothing to sneeze at.That brochure is a bit out of date - as the newest generation HR Rodenstocks (like the 90mm HR 'Alpagon') are not listed in it, and they are definitely best at wide open f5.6 to f8, and clearly degrade due to diffraction at f11.
If I have the time I'll post examples.
Damn... I thought I was quite good at tilting, but now when I've studied the subject further and learnt some details around axial tilt and realized the great advantage of placing the far-point along the tilt rotation axis I need to rewrite the section.Inspired by this and recent tilt threads I've updated my article on landscape focusing and added a new section "all-around tilt focusing technique"
For those of you , who have the SILVESTRI 12x loupe .
The mechanical movement of the focusing ring is far too smooth .
That is very annoying when working with the loupe .
Now , I have found a solution for this issue , which I would like to show you .
It is a very simple thing . A rubber O-ring .
Please have a look to the attached image .
The rubber ring prevents the focusing ring from moving , but does not block the ring .
Just makes the erroneous turning difficult , but can still be adjusted .
View attachment 71877