Re: [Leica] UVa Filter unwanted effects.

["Peter Zak" <pzak@desidero.com.au>]

Yes,

But I assume you that after years of Nikon ownership I've no intention of
using the C**** word.

PZ.

- ----------
>From: John Collier <jbcollier@home.com>
>To: <leica-users@mejac.palo-alto.ca.us>
>Subject: Re: [Leica] UVa Filter unwanted effects.
>Date: Thu, 10 Feb 2000 4:38 PM
>

> First you slag us ( well I guess someone had to ) and then you mention the
> F***** word. Oh my G**.  Everybody duck!
>
> John Collier
>
> Don't worry you'll be made welcome now.  ;-)
>
>> From: "Peter Zak" <pzak@desidero.com.au>
>> Date: Thu, 10 Feb 2000 13:47:49 +1100
>> Subject: [Leica] UVa Filter unwanted effects.
>>
>> I'm well aware of the debate on UVA filters re: Protection vs Image
>> degradation, but
>>
>> I've noticed that the UVA filters on my 35mm and 90mm Summicrons are giving
>> unwanted reflections as night.
>>
>> I've shot some night scenes of Sydney Australia and I can read the neon
>> naming signage duplicated up in the Sky (reversed).
>>
>> The same shots without the UVA filters are OK.
>>
>> I've taken with Leica-AG, their response is:
>>
>> "All our filters have multi-layer coatings to reduce reflection at the
>> glass-air planes.  So we reduce the intensity of the reflected light to a
>> very low level.  But it is not possible to suppress the reflections totally.
>> If there is a motive with a very high contrast ie.  Lamps at night, you can
>> see the faint reflexes of the lamps easily on the dark background of the
>> night"
>>
>> Ok, so the solution is (surprise, surprise) take to UVA filters off for
>> night shooting.
>>
>> But my question is - why have I never noticed this in 7 years of Nikon
>> shooting using some very cheap and nasty UVA filters at all times (ie
>> non-HMC Hoya, Arrow !!).  A $15 filter doesn't have this problem, a $200 one
>> does ??.
>>
>> I have sent an email back to Leica asking the same question.  I will post
>> the response when it arrives.
>>
>