Bosk
Make photos, not war.
I ask because I haven't seen any vented hoods on Nikon/Canon/Pentax lenses, and I'm wondering what the rationale behind the design is. Thanks.
Why do Leica lenses have vented hoods?
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lubitel
Well-known
I am not sure, cause I dont have one yet, but I think its so that it doesnt block your view through the VF as much.
Silva Lining
CanoHasseLeica
For airflow - design reduces effects of turbulence on the lens surface😀
ChrisN
Striving
Years ago, there was a radio show called "The Goon Show", starring Spike Milligan, Harry Secombe, Peter Sellers (and others). I seem to recall one episode in which the character Bluebottle discovers a hole in Ned Seagoon's trouser leg. "Whats this hole for?" "It's for looking through!"
Same concept applies to vented hoods. The hole allows you to (partly) see through that section of the hood, which would otherwise obscure part of the viewfinder frame! Elementary, my dear Watson! (Another literary misquotation.)
Same concept applies to vented hoods. The hole allows you to (partly) see through that section of the hood, which would otherwise obscure part of the viewfinder frame! Elementary, my dear Watson! (Another literary misquotation.)
Bosk
Make photos, not war.
Well it certainly makes sense now, thanks! 🙂
Didier
"Deed"
Yes, that's it. And it's not true that only Leica had such hoods. The Canon 50/1.2 has a giant vented hood, as well as the Nikon 50/1.1 (which was even more giant). Smaller lenses/hoods do not intrude in the viewfinder frame, that's why most Nikons/Canons lenses had unvented tubular or conic hoods.lubitel said:
Didier
chug
I wear pants
It makes the camera go faster.
Will
Well-known
Will
Well-known
When you lens is a certain size, a close hood would block the VF and the RF window, a 80mm-ish hood on the big canon lens would block the RF window.
Didier
"Deed"
Will
Well-known
Didier said:
Yeah, is that lens. I got the idea off Tom's hood from CQ webpage.
If I shoot at F/4, wouldn't make sense; but this lens needs all the help it can get while shooting while shooting wide open.
Bill58
Native Texan
They are vented for photographer comfort in hot climates. They actually built a small A/C unit too--but it's hell on the meter battery.
kshapero
South Florida Man
So if the lens hood is vented to allow the eye to see the subject, doesn't that also allow light thru and negate the reason to have a lens hood?
T
Todd.Hanz
Guest
Bosk said:
Well obviously it's because Leica lenses are smoking hot 😀, and to see through.
Todd
ErnestoJL
Well-known
kshapero said:
Ligth coming from the back of the lens will do no harm to the picture nor will reach the front of the lens.
Strong light coming from out of the lens viewing area but reaching the front lens anyway, would be refracted by the same front element and sent into the lens barrel, where it can produce unwanted reflections.
Usually this reflection shows up with the iris shape in the neg. or a strong decrease in picture quality.
Ernesto
raid
Dad Photographer
Leiz lenses are "hot", so any cooling system is useful. Like a efficient radiator in a Mercedes cabrio. Oh well, I am trying ....
Raid
Raid
RayPA
Ignore It (It'll go away)
The vented hood for my Hexanon 35/2 has a very nice feature. Once it is screwed on tight to the lens it can be pivoted back about a quarter turn without unscrewing, to allow perfect positioning of the hood.
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pedro.m.reis
Newbie but eager to learn
Well, i like the airflow/go faster/hot lens/radiator theory best.....:angel:
But i confess that my first thought when i looked the question was that the vents helps the lens to stop the image ... like in ventilated brake disks....😎
But i confess that my first thought when i looked the question was that the vents helps the lens to stop the image ... like in ventilated brake disks....😎
Benjamin Marks
Veteran
b/c they look cool.
Ben
Ben
peter_n
Veteran
Thoughtful design. I've replaced any vented hoods I have with regular hoods from heavystar. I think RF cams should be small if possible... 🙂RayPA said:
