Probably should have taken Joe's Gandy/40mm advice, but my two hoods arrived today from Americo Falcone (true name probably Bob Smith) of Caracas Venezuela. Much more convenient than my local camera store, actually. Three week delivery, exactly as he advised.
Both hoods are better-built than the old Leica rectangle I once had. The Nicca, in particular, couldn't be nicer...beautiful fitting and finish. Need to own a Nicca.
These are for my Canon 35 f2...which NEEDS a hood.
One is very compact, rectangular clamp-on. Fits perfectly, looks great, doesn't cut much into the view... don't know about vignetting. Looks like an old Rollei hood. It's a Nicca! Rare, right? But if it vignettes as I expect...it may be too deep... I may have the sides cut back by 3/8".
The other is a squeeze-on (no screw), but it's spring loaded and very tight. Typical vented hood. Kenko (that's old Canon sister brand, right?). May be less likely than the Nicca to vignette, but it's more bulky. If it works I may simply EPOXY (yikes!) it to the B+H UV (yikes! yikes! yikes!), making it a screw-in that'll always be aligned properly. Guess that'd work with the Nicca as well, and that's more critical because it's not vented and is rectangular so needs to be aligned properly.
Neither cuts as much into the image as my Nokton 50 hood.
For now, neither one leaves the house without a leash to my camera strap.
$46.76 for both including shipping from Venezuela.
I've double posted. So sue me