This is not the first time I have mentioned sharpness when it comes to pinhole photography. I know! not something you associate with the dream like quality of the images it produces. It is part of the reason that draws me to using a pinhole camera but it does not stop me speculating whether a T grain film would enhance the detail and therefore increase the sharpness.
I have already informally checked out the idea that Rodinal/RO9 could go some way to increasing sharpness which was done some time ago. (if your interested in that article I'll post a link at the end) The results did confirm that there was something in my observations. I will reiterate that the sharpness increase will not rival that of a lensed camera.
|Delta 100 @100iso developed in RO9|
|Contact print on Fotospeed RCVC|
What do I mean by an increase of sharpness - it shows it's self with a better defining of the details across all areas but still maintains that softness you expect from lens-less images.
All the above were printed on Fotospeed RCVC paper developed in Ilford multigrade