Yep,
More precisely speaking the apparent construction quality is superb.
The hood is a texturized aluminum , flat black with a nice voigtlander
logo on it. It is mounted like a lens replete with an allignment red
dot. The extra material for a rectangular hood would seemingly be
trivial. Thanks for the hood cap idea. Can't say I've seen too many
tulip hoods on a prime, but that may just be my selective lens
interests. If a design compromise led to a bit a of tendency to flare,
why not go all the way? I have no clue, but will ask my one contact at
Cosina:
Keiji Kato
Cosina Company Ltd.,
11-5-1410, Tomihisacho
Shinjuku-ku, 162-0067
Tokyo, Japan
He was kind enough to send me the MTF data from their lab (before the
reviews I linked to before were available) and amazingly went to a
downtown Tokyo shop to retrieve a rare OM mount lens that I had
tentatively located after my inquiry to a Malaysian dealer. I'll ask
Stephen Gandy at Cameraquest if any hood caps are around. I vividly
recall his one word response inquiring on the chance of any more new CV
125mm macros in OM mount becoming available --"NONE"
I had read a history of C-V and their more recent design philosophy
about 6 mos ago. They apparently used computer aided design to build a
"near optimized lens" then empirically try and cut back some elements
to keep the cost from going through the roof. I was surprised by the
amount of reliance on an Edisonian approach. Perhaps the square hood
was arrived at in a similar fashion or was a design flaw. A friend
worked for IIRC Lockeed Martin a few years back and was on an
engineering team for the Martian lander. Signal sent to the lander in
wrong units---crash. Much bigger oops.
Mike
Yes, a nice design detail. No reason it couldn't also be done with a
rectangular 3:2 hood.
> The squarish format should be more effective than an equivalent sized
round
> hood
Yes, but less effective than a 3:2, rectangular hood.
Take another look at the link you provided. Down near the bottom, he
has
some examples and a discussion of effectiveness. I think you will be
able to see that a square hood on a 3:2 format allows stray light in at
the top and bottom, landscape mode.
One elegant solution would be if you can obtain another hood cap, and
cut out a 3:2 opening the full width of the cap. It would be like the
capped tulip in the examples. You need a spare cap anyway, why not find
two at once?
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