[rollei_list] Re: Five versus Six Elements, 3.5 versus 2.8

  • From: CarlosMFreaza <cmfreaza@xxxxxxxxx>
  • To: rollei_list@xxxxxxxxxxxxx
  • Date: Sat, 26 Oct 2013 11:37:30 -0200

The weight difference Automat vs GX is even bigger: 315g

Carlos

2013/10/26 CarlosMFreaza <cmfreaza@xxxxxxxxx>:
> Marc:
>           The weight difference between an Automat type 3 and a 2.8GX
> according your numbers is 255g, not 115g, it's a perceptible
> difference to handle the camera and to carry it hanging from your neck
> if you walk for a long time.
>
> There is some simplification or typo in the Prochnow's info about the
> 3.5F and 2.8F weight, it couldn't be the same since they are identical
> mechanically and the 2.8/80 lens is heavier than the 3.5/75 lens;
> Prochnow sometimes takes info from official prices lists and Rollei
> sales brochures for the cameras description, they tend to simplify, to
> average and to standardize the cameras basic description, it's like
> the lens nominal focal length and the lens real focal length.
>
> OK, I just weighed my 3.5F with the Planar 3.5/75 six elements and the
> 2.8C with the Xenotar 2.8/80, both without lens cap and with an empty
> 120 spool: 3.5F= 1140g; 2.8C= 1230g, the 2.8C is a simpler camera than
> the 3.5F and the 2.8F, it does not have lightmeter, it does not have
> DOF calculator, it does not have coupling lightmeter gears; the lens
> weight makes the difference, in other words, the weight difference
> between the 3.5F vs 2.8F must be bigger than the 2.8C vs 3.5F
> difference. I use both cameras and I perceive the difference, it's not
> a "dramatic" difference but it exists.
>
> I don't think the 2.8/80 lens has some fragility itself in comparison
> with 3.5/75 lenses, however the 2.8/80 five elements has a larger
> diameter and they use similar body, the 2.8/80 lens first element
> surface is more exposed to suffer scratches and the like than the
> 3.5/75 lens, it's a matter of size.
>
> Carlos
>
> 2013/10/26 Marc James Small <marcsmall@xxxxxxxxxxx>:
>> I have owned many variants of the 3.5/75 Planar Rolleiflex TLR's and a few
>> of the earlier Tessar ones.  For many reasons, I kept a 12/24 2.8F and a
>> 2.8GX and a Postwar Automat, Type 3.
>>
>> Weight:
>>
>> Automat, Type 3           920g
>> 3.5C (five-element Planar       1120g
>> 3.5F (six-element Planar)       1220g
>> 2.8F                            1220g
>> 2.8GX                           1235g
>>
>> Now, Carlos, where's the beef?  The distinction in real weight between the
>> Automat Type 3 and the 2.8 GX is 115g, roughly a quarter of a pound or
>> around four ounces.  Lord Almighty, I heft a Leica M6 lot weighing
>> thirty-five pounds about with me, and even my Rolleiflex kit includes the
>> Mutars and the Proxars.
>>
>> I am unaware of any fragility of the lenses on the 2.8/80 models.  I've
>> never had any problems with any CZJ, CZ, or JSK lens on a Rolleiflex TLR.
>> The reflex mirrors can be a problem, as the factory coated them in silver
>> and it is now a problem to find a company still doing that but, of course,
>> you can silver it in your own kitchen though I would recommend that you do
>> this when your spouse is visiting the maiden aunt, as the process involves
>> some testy chemistry.
>>
>> Thanks for sharing the pictures, Carlos.
>>
>> Marc
>>
>>
>>
>>
>> msmall@xxxxxxxxxxxx
>> Cha robh bàs fir gun ghràs fir!
>>
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