Biogon Lens Cap??

efirmage

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Just got my Biogon f/2.8 35mm today, and so far I'm very impressed. I hope to have more impressions/photos when I get a roll developed. But the lens cap is without question the biggest piece of **** I've ever put on the front of a lens. Can you put a leica lens cap on these? Any other solutions? I can't believe they go to the trouble of making great lenses and don't design a piece of plastic that will stay on the damn thing. :bang:
 
i put on the hood and attach a lenscap on the hood, instead of the lens.
as for the size, i cannot remember exactly, but i think it was 67mm. after i got home from office, i'll check and report here.

regards
s.

i remembered wrong.
a no-name 62mm snap on cap fits perfectly.
 
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Bought one from Adorama, so hopefully it will work better. Almost got next day shipping on it (which was much more expensive than the actual cap) because this thing is so bad. Could be nice to have a backup though.

What kind of hood do you have sebastel? Do you find that solution working for you? How's lens flare on this lens? From what I've read it handles it pretty well.
 
.... How's lens flare on this lens? .....

It is extremely resistant to flare. Erwin Puts, in his tests against against the Leica 35mm Summarit came to marginally different conclusions than Sean Reid [Reid Reviews -- subscription site] which can be attributed to slight differences in their testing process. Read this :

http://www.imx.nl/photo/zeiss/page116/page116.html

Puts was enthusiastic about the lens, as was Sean Reid.

On the M8 I use a Bo Lorentzen hood and really like it. I use the hood more as a protection from dust, rather than flare :

http://bophoto.typepad.com/bophoto/2010/09/new-lens-hood-for-voigtlander-35mm-14.html#more

A little more info here :

http://www.l-camera-forum.com/leica-forum/customer-forum/149764-alternative-hood-cv-35mm-1-4-a.html

My own theory about Zeiss' crappy lens caps is that they were so pleased with their lens designs that the design team went down the pub to celebrate and left the village idiot to design the cap, and even now they are too embarrassed to correct the design. It's a design folly that will not go away on it's own, but on the really bright side ---- the lens is fantastic.

................ Chris
 
Hahaha, yeah the caps are really bad. I use the 25/28 hood on both my 28 biogon and 50 sonnar, that almost eliminates the "sling shot" cap issue.
 
I have found several makes of cap to be hard to hold using the inner finger grips, i.e. the ones you'd use if you were placing the cap inside a mounted hood. These caps (Nikon too) seem to slip from my fingers.

My solution in some cases is to get a cutter on a Dremel tool and score grooves across the finger grips to improve the grip of the finger. It's not pretty (since the tool I use does not cut totally cleanly) but it really works. In some cases I keep the original inferior cap in case I want to sell the lens.

The Tamron caps are great, but they don't go down to some of the sizes needed for rf lenses
 
They are the way they are to insert them into deep, mounted hoods. I have no trouble gripping them, I have trouble with them actually catching correctly.
 
What kind of hood do you have sebastel?
the original zeiss hood, which is (except for the engravings and the retail price) identical to the voigtländer LH-6
Do you find that solution working for you?
it works so well that i use the same approach to all my hooded lenses.
the snap on caps best work on typical rangefinder hoods.
not so well on standard hoods where they easily slip off.

using caps on the hood of course does not keep away dust, which enters through the rearward cutouts of the hood. but it prevents fingers from touching the glass, and first of all, prevents cloth shutters from the sun.
another plus: you can see through the finder that the cap is on (the hood cutouts remain dark when the cap was forgotten).
How's lens flare on this lens? From what I've read it handles it pretty well.
the lens does flare (other than regularly claimed) in the typical situations, with light source just outside the field of view. but the flare is rather mild.
let me attach an example ... a picture tells more than many words.

other than resizing, this is out of the camera B&W by epson R-D1. hood was on, no filters.
sorry for the small size, hope it still helps.

cheers,
sebastian
 

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I have found several makes of cap to be hard to hold using the inner finger grips, i.e. the ones you'd use if you were placing the cap inside a mounted hood. These caps (Nikon too) seem to slip from my fingers.

My solution in some cases is to get a cutter on a Dremel tool and score grooves across the finger grips to improve the grip of the finger. It's not pretty (since the tool I use does not cut totally cleanly) but it really works. In some cases I keep the original inferior cap in case I want to sell the lens.

The Tamron caps are great, but they don't go down to some of the sizes needed for rf lenses


I do the same thing with the tip of a stanley knife. LOL

Once you can actually get a grip on those slippery little devils they're fine IMO ... the lens cap itself really isn't that bad! :D
 
Considering a lens hood like the ones mentioned, but it adds to the spectacle of the camera, and I like to stay inconspicuous. I'm glad it is reported to have great flare control from light sources at odd angles, I probably did that on half of my last roll.
 
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