[rollei_list] Re: Lens coatings and veiling flare.
- From: Eric Goldstein <egoldste@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Tue, 7 Jul 2009 11:13:51 -0400
Sanders -
The problem with the later lenses is the much higher over-all contrast
and "modern" look. Personally I hate it. Suggest you shoot one for a
while before you buy it... it will probably compel you to change your
light, printing, development, etc...
Eric Goldstein
--
On Tue, Jul 7, 2009 at 11:06 AM, Carlos Manuel
Freaza<cmfreaza@xxxxxxxxxxxx> wrote:
>
> Rollei TLR were provided with simple lens coating from 1949, during the TLR
> regular production up to 1981 the TLR lenses had not multicoating layers,
> only the Zeiss double layer coating; in 1972 Rollei considered multicoating
> lenses expensive too much for the TLR and unnecessary due to the four and
> five elements lenses, since Carl Zeiss would produce multicoated normal
> lenses, Rollei only used Schneider Xenotar and Xenar for the TLR from
> 1972/73. The only Rolleiflex F provided with multicoated lenses was the F
> Platin, Planar lens 2.8/80 HFT (actually it's a Zeiss T* multicoating made by
> Zeiss, it was used "HFT" name for commercial issues and the agreements
> between Rollei and CZ by that time), this Planar was used for the GX/FX
> afterwards, it was made from the scratch by Zeiss 'cause they no longer had
> the tooling to manufacture the TLR Planar.
>
> The main problem about flare under the situations mentioned below is the lens
> and camera age and their condition; light seals, black paint, light trap
> adjustments and conditions suffer the aging situation even if well
> maintained, anyway I have several samples taken with the 2.8C, 3.5F and 'cord
> IV where in similar situations and despite the subtropical sun I don't get
> flare or if I get it, it is maintained within reasonable limits, however I
> got once or twice ugly flare due to the special angle sun-lens.
>
> I'm convinced due to some tests that for old cameras like our TLRs, the
> f/stop has a significant influence to control the flare in the situations
> referred below, it could do a noticeable difference, I always try to shoot at
> f 5.6 and smaller f stops for backlit and similars, Avedon shot at f8 with
> the TLR in general. If my memory serves me good, you tend to shoot lens wide
> open or close to wide open, perhaps it has to do with the flare and rollers
> reflection problems.
>
> Carlos
>
> --- El mar 7-jul-09, Sanders McNew <sanders@xxxxxxxxx> escribió:
>
>> I shoot a variety of older
>> Rolleiflexes --
>> a 3.5E and a 2.8C getting most of the
>> work. Their weakness, in my use, has
>> always been veiling flare when shooting
>> a strongly backlit subject, or in other
>> conditions where the sun or a bright
>> reflection is in the frame.
>>
>> Does anyone onlist know when F+H
>> or its lens suppliers upgraded the lens
>> coatings on the TLRs? Are later TLR
>> models more effective at suppressing
>> veiling flare in these conditions? Do
>> I need to ask Austin for his GX to tame
>> this beast?
>>
>> Sanders
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>
>
>
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