[LargeFormat] Seneca 5x7

[Les Newcomer]

Okay I found my catalogs.

a 7 7/16" Tessar Ic will cover 5x7 wide open and 5x8 stopped down. You 
can usually find these cheap (less than $50) and they are a good lens. 
these aren't usually stamped with the focal lenght, but with the plate 
size, a 5x8 Tessar is  8 15/32"  guess they really didn't want yo 
thinking this was and 8 1/2" lens!!!!

a 7" Dagor will cover 5x7 wide open and 8x10 when stopped down to f32, 
so there's your movements. you can also remove the front cell and get 
about a 12" lens too. (Hey it was good enough for Ansel!)

A Protar VIIa is a combnation of two Protar VIIs.  a 13 3/4 and a 16 
3/16" combined they make a 7" lens of f7.7 that covers 6.5x8.5 stopped 
down to f22.  This is a very nice lens but you can quickly see where 
that extention rail comes in handy.

I have a Protar C set which is three lenses that combine to make 6 
different focal lenghts the lenses are 8 3/4, 11 3/16, and 13 3/4  
combinations give me 5 5/8, 6 and 7" and since I stop down to f22 all 
the time, they all cover.


those are the common lenses used before the war  (come to think of it, 
the statement is true for either I or II !!)

for lenses after WWII you'll have to look further, I'm still stuck 
somewhere around 1929.

les


On Thursday, August 15, 2002, at 07:19 PM, Les Newcomer wrote:

> About the only 7" lens I that will cover 5x7 with movements would be a 
> Protar VII or VIIa or a Dagor.  let me check my references, I think the 
> 203 f7.7 Ektar will barely cover 5x7, the 8" commercial ektar should.
>
> My 180mm symmar S is supposed to cover 5x7 but barely.
> On Thursday, August 15, 2002, at 07:00 PM, Rich Lahrson wrote:
>
>> Hi Les!
>>
>>      And thanks for the suggestion about the extention box with the
>> packard shutter.
>> My first lens will probably be about 7 inch or 180mm.  I'll look for
>> something older.
>> I need to pull all this together soon.  Did Kodak make a 7 inch Ektar
>> and would this
>> cover 5x7 with some movements?
>>
>>      I looked at a few B&Js that had 24 inches of bellows in the same
>> price range.
>> But they are larger and heavier.  If I like the 5x7 format after a year
>> of using it,
>> I'd like to upgrade the camera to a Deardorff which I believe has 24
>> inch bellows.
>> This particular Seneca is attractive and will resell easily (geez, I
>> haven't even gotten
>> it yet).
>>
>> Rich Lahrson
>> Berkeley, California
>> tripspud@transbay.net
>>
>>   If there's a shortcoming to this camera it's the limited bellows.
>> Since
>>   9" is more or less normal for 5x7, you'll be maxed out with 10-12"
>> lens
>>   for portraits.  If you live or plan to shoot any landscapes, 
>> sometimes
>> a
>>   14-15" lens comes in handy.  From the limited photos, I don't think
>> this
>>   was designed to use an extension rail, (didn't see the holes for it)
>> and
>>   at this point I'll assume the bellows will be maxed out with what the
>>   camera has now, so making a set of rails would mean a new set of
>>   bellows, so that's out.
>>   If you do decide on getting longer lenses, then I suggest paying the
>>   money to have an exention box made.  it could be as little as 4" and
>>   effectively adds 4" to the bellows, you put it on between the
>> lensboard
>>   and the camera, It could even employ a packard shutter.
>>   Les
>>
>>> Hi folks!
>>>       I've been shopping for a 5x7 view for the last few months, and
>>
>>> yesterday decided
>>> on this:
>>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1372325930
>>
>>
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