[rollei_list] Re: Rolleiflex TLR with Polaroid Magazine?
- From: CarlosMFreaza <cmfreaza@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 28 Aug 2013 19:56:28 -0300
Jerry:
It was asked if the Polaroid back was a special adaptation,
the watch was already built for the answer.
Carlos
2013/8/28 Jerry Lehrer <glehrer@xxxxxxxxxx>:
> RUGers,
>
> Who originated the expression;
>
> "Ask him the time and he will tell you how to build a watch" ?
>
> Jerry
>
>
>
> On 8/28/2013 2:49 PM, CarlosMFreaza wrote:
>>
>> 2013/8/28 Jan Decher <jdecher@xxxxxxx>:
>>>
>>> There is a Rolleiflex TLR (T or E) in the window of a local camera store
>>> her
>>> in Bonn with a Polaroid magazine mounted in place of the standard back.
>>> Hadn't seen this before and wondered if it's a special adaptation? Price
>>> is
>>> some 275 Euro, I think.
>>
>>
>> Jan:
>> There were some threads about the Rollei Polaroid back and
>> Rollei Polaroid kit in the past. This is an answer John Wild and me
>> wrote for the "Your forum" section, Club Rollei Users magazine issue
>> 29, about the Polaroid kit:
>>
>> "Before the war, from 1939, F&H modified a Rolleicord for
>> Philips, the Dutch electronics firm, to be used to photograph oscilloscope
>> screens. The Philips Model Rolleicord II with Triotar
>> 3.5/75 lens provided with a 24 frame counter was available; it
>> could take 24 3 x 6cm frames using a mask set; the regular Rolleicord
>> model at the time – the Rolleicord II third model - had a
>> Bayonet I fitting on the taking lens only; the Philips version had
>> Bayonet I fittings for both lenses. Prochnow's Rollei Report I
>> does not clarify whether the oscillograph kit for this camera was
>> sold via Philips; this was the only Philips Rollei camera version
>> before the war.
>> After the war, the renewed collaboration with Philips produced
>> an order in 1955 for twenty modified Rolleicord V prototype
>> cameras able to accept 120 film masks. But only with the
>> exchangeable counter on the later Rolleicord Va series did the
>> special unit really make a difference for Philips. Two photo tubes
>> for holding the camera to the oscilloscope allowed individual
>> images of the CRT to be taken even in bright surroundings. Using
>> the special Rolleinar 4 set, which did not have parallax correction,
>> photos of the screen could be taken at magnifications of 1:2.5, i.e.
>> a fluorescent screen of 10 cm diameter could be captured on a 40
>> x 40 mm frame. The ideal solution was 16 40 x 40 mm circular
>> pictures or 24 masked circular images using a 28 x 40 mm mask.
>> These were special masks giving an offset image. The Rolleicord,
>> not having multiple exposure prevention permitted multiple
>> exposures making it feasible to map the course of the current and
>> voltage in a circuit showing their mutual phase shift.
>> With the help of instant picture film and a dismantled model 80
>> Polaroid camera (for film sizes 32, 37 or 38) the first adaptable
>> film back was developed which was suitable for both Rolleicord
>> and Rolleiflex cameras. The long waiting time to develop the negative
>> and then to make contact prints had made such a construction
>> desirable.
>> A one-piece dark slide preventing accidental film exposure in
>> the loaded prototype device was changed to a two-part slide in the
>> production series. This slide also resolved masking the film gate
>> when recording either a full 55 x 55 mm or two 28 x 55mm frames,
>> in which case the magazine was raised or lowered by a side lever.
>> Due to the rear light proofing ribs projecting beyond the film
>> plane of the camera and combined with the thickness of the Polaroid
>> back, the film gate for roll film could not be used. This additional
>> 40mm to the film meant that the camera could not achieve
>> infinity focus. This increased film back extension gave the resulting
>> system a maximum focusing distance of only 22 cm having a
>> magnification ratio of 1:2 with the Rolleicord’s focal length of 75
>> mm (24 cm, 1:2.2 with the Rolleiflex 80mm lens). When using the
>> Philips Polaroid set, the Rolleinar 4 was not normally required.
>> These Rolleinars were intended primarily for photography with roll
>> film. The focusing screen of the viewfinder had to be raised by 40
>> mm and for reasons of parallax, it was offset to the rear.
>> In 1962, another 20 Rolleicord V cameras were adapted to accept
>> the Rolleicopi, they had a modified viewfinder that allowed
>> focusing with the new Polaroid back for the Philips oscillograph
>> kit; a closer focus was possible due to the greater distance to the
>> film plane; new frame sizes and masks were also developed for the
>> Polaroid back. This new Philips kit was then used with the Rolleicord
>> Vb and Rolleiflex T.
>> The Philips kit for the Rolleicord Va with the 16 exposure 40 x
>> 45mm and 24 exposure 28 x 40mm masks, a photo tube to attach
>> the camera to an oscilloscope and two Rolleinar 4 close-up lenses
>> for pictures between 20cm to 25cm was available from 1957 to
>> 1962; this camera had an interchangeable frame counter from the
>> factory.
>> >From 1965 to 1967 there were two different kits available:
>> The complete ‘large’ Philips case, sold only by Philips, containing
>> both the Polaroid and roll film kits, the Rolleicord Vb camera,
>> two different size adapters to connect the phototube to the oscilloscope
>> screen and the Rolleicopi viewfinder raiser, two Rolleinar 4
>> close-up lenses, 16 and 24 exposure counters and respective frame
>> masks. The Rolleicord, Rolleicopi unit and Polaroid back had
>> matching serial numbers
>> The little Rollei kit sold by Rollei included only the Rolleicopi,
>> the Polaroid back and a centralized viewfinder mask. It was aimed
>> at macrophotography when using Rolleiflex and Rolleicord cameras
>> having a removable hood – but not Rolleimagics - with Polaroid
>> film and generally without a Rolleinar. This kit allowed macro
>> photographs from 22 to 19cm with 75mm lenses, 24 to 21 cm with
>> 80mm lenses and 66 to 58cm with the Tele-Rolleiflex.
>> The Rolleicopi/polaroid back can be used with Rolleinar closeup
>> lenses; Rolleinar 3 produces images approximately life size and
>> the Rolleinar 4 still larger images.
>> Carlos Manuel Freaza and John Wild"
>>
>> Carlos
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>
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