Yes, the slide on hoods have a small screw on one side that clamps
against an inner stainless steel ring to hold the rubber hood in
place.
The slide-on hood for the 50/1.2 is similar, but the hood is metal.
The 90/2 macro uses the same rubber slide-on hood as the 135/4.5
macro if that helps, although the 90/2 didn't include a hood when
purchased new.
the diam measurement of the slide-on Oly lens hoods isn't terribly
illuminating (pardon the pun) because , as you suggest it doesn't
tell you which lenses it will fit on.
For example, I have the rubber hood for the 90/2 +135/4.5, a rubber
hood for the 35-105 3.5/4.5, the rubber hood for the 35-70/3.6 and
the rubber hood for the 35-70/4.
all of these lenses have 55mm diam filter threads, but all have
different lens hoods. I've never tried to mix and match them, but I
suspect that in addition to the angle and length of the shade, the
barrel diameter of each is different, therefore the hoods wouldn't
all be interchangeable.
there is a list of OM hoods and the Zuiko lenses they suit on a web
site. I think it is R Lee Hawkins Zuiko Lens site. Don't have the URL
at hand sorry.
FWIW, I actually don't like using the rubber hoods - I tend to prefer
rummaging thru "odds and sodds" boxes at camera shops and finding
metal screw in hoods (making sure to check for vignetting). At about
$2 a piece, I but whatever I can find and then play around when get
home and try on various lenses. Obviously you want shallower, more
widely flared lens hoods for WA lenses, narrower and longer for teles.
The metal hoods (I feel) give more protection to the lens in my
camera bag, and are more effective in shading the front element.
Also, if you lie a lens with fitted rubber lens hood down on its side
(eg in your carry bag) you will notice that sometimes the rubber
doesn't spring back to a perfectly round shape, but remains slightly
deformed. This could interfere with the view of the lens.
just my (Australian) $0.02 worth.
cheers
peter
Dear All....
Whats a slide-on hood ? Is it that rubber hood that comes with a silver knob
on one side to screw on to the side of the lens ?
How many different sizes does it come in ?
A 57mm slide-on hood (I read somewhere) ..... does it mean it will fit onto
a lens with a 55mm filter ?
What hood does the 90/2 Mac use ?
Peace
TMLee
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