i purchased a tachihara 8x10 double extension.i am now looking at a lens.specifically the rodenstock 240 sironar s. due to the shorter bellows and my desire to do 1:1 along with some landscapes and possibly an occasional nude. the image circle seems adequate @372mm,it's multicoated and corrected for 1:1. my question is does anyone out there have any experience with this lens when used on 8x10 for these types of applications. thank you in advance. william. ps. i'll only be shooting b&w.