Archived posting to the Leica Users Group, 2002/10/03

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Subject: Re: [Leica] quick lens poll.
From: Michael Cahill <mcahill@laurelgroup.com>
Date: Thu, 3 Oct 2002 11:40:16 -0400

I think you might be right, John.  I did buy the lens new and it's 
possible that I may have used a bit too much force adding or removing 
the hood.

I agree, the hood is not needed.  The lens is fantastic as far as flare 
goes, but your description of cameras banging together is exactly why I 
still use it.

Thanks for the reply.

MC


On Thursday, October 3, 2002, at 11:06 AM, John Collier wrote:

> The 12589 is the best hood for the 35/1.4 Asph. Let's just walk through 
> what should be there starting from the front of the lens where the lens 
> hood mounts.
>
> - 4 mm in, there is a raised lip with two notches, one at  90 degrees 
> from vertical on the right and one at 90 degrees from vertical on the 
> left.
>
> - After the lip there is a narrow groove and then the raised area with 
> the white aperture index dot.
>
> The lens hood slides onto the front of the lens and covers the lenses 
> aperture index dot. At the side of the lens hood there are two tabs 
> that lock into the narrow groove. Each tab has a square nub that fits 
> into the notches in the raised lip on the lens. After the lens hood is 
> mounted, you twist the locking ring which forces the tabs into the 
> groove and the nubs into the notches. Now the lens hood is locked in 
> place and cannot be moved even with a fair amount of force applied.
>
> That is how it should be. Possibly an attempt was made to remove the 
> hood without releasing the lock ring. This could break off the square 
> nubs which locate the lens hood and cause the troubles you are having. 
> You might be able to fabricate new nubs with a bit of "Krazy glue". If 
> not you will need to buy a new hood.
>
> I hope this helps,
>
> John Collier
>
> PS: The 35/1.4 Asph is one lens that does not require a lens hood. The 
> concave surface of the outer element, and other things as well I am 
> sure, make it one of the most flare proof lenses I have ever used. I 
> actually seldom use the hood except where I will have a bunch of 
> cameras banging together during a shoot.
>
> On Thursday, October 3, 2002, at 08:11 AM, Michael Cahill wrote:
>
>> It's the late model lens (3905865) using the 12589 hood.
>>
>> MC
>>
>> On Thursday, October 3, 2002, at 09:36 AM, John Collier wrote:
>>
>>> Which version of the 35/1.4 and hood are you referring to?
>>>
>>> First version E41 with OLLUX/12522 hood
>>> Second version A42 with 12504 hood
>>> Aspherical with 12587 hood
>>> Asph with early hood 12587
>>> Asph with middle hood 12588
>>> Asph with late hood 12589
>>>
>>> John Collier
>>>
>>> On Thursday, October 3, 2002, at 06:18 AM, Michael Cahill wrote:
>>>
>>>> With all this discussion of the 35/1.4,  has anyone encountered a 
>>>> problem with the lens hood not staying in a fixed position but 
>>>> rather rotating in either direction with the slightest twist? Kind 
>>>> of annoying.  Is there a fix?
>
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>

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