I've not observed vignetting using the 24/3.5 hood on my 18/3.5, but you can certainly use the Takumar hood made for the 20/4.5 with no problems.
The Tak 105/2.8 hood should be fine on the 85/2.0. I use it on the M50/1.4 with no vignetting or problems. Shel > [Original Message] > From: Kostas Kavoussanakis <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Date: 12/18/2004 5:08:38 AM > Subject: Speaking of hoods > > > I have a couple of questions about hoods: > > - I believe the Takumar 24/3.5 hood vignettes on my K18/3.5. Perhaps I > am not careful enough to align it, but on the rare occasion I use > this lens I have seen vignetting. Any other options, seeing as one > can't easily source the one for the 18? A tulip perhaps? Andre, I > don't do DIY, thanks :-))) > > - Will the Takumar 105/2.8-100/4 hood vignette on the M85/2 (which I > have now had cleaned and may try to sell again, but would like to > use it until it leaves my hands)? I know, I could test it. At f2? > > Thanks, > > Kostas