[LargeFormat] Double checking.

[Les Newcomer]

A common focal lenght for diffused focus is 14-15" for 6x8 (tho they usually
cover 8x10) and 16-18" for 8x10.  An 18" f4.5 lens is a damn heavy piece of
glass, which is why portrait cameras were built with mimimal movements and
maximum strenght in the front end.  If seen an 18" f 2.8 lens.  it's the
size of a small waste basket and pretty much destroys any camera it's on.

> From: "philip.lambert" <philip.lambert@ntlworld.com>
> Reply-To: largeformat@f32.net
> Date: Mon, 18 Mar 2002 18:00:51 -0000
> To: <largeformat@f32.net>
> Subject: Re: [LargeFormat] Double checking.
> 
> If the negative measures a true 8x10 then its diagonal is 325mm and this is
> the focal length of a standard lens, equivalent roughly to 43mm on 35mm
> (which is a different shape, hence roughly). On this basis 20mm equates to
> 150mm.  A portrait lens is usually longer than the standard lens although I
> have seen a few strange portraits taken with wideangle lenses. You would get
> the equivalent of 85mm on 35mm with 650mm on 10x8.  I don't know if there
> are any such creatures out there but how long is the bellows on your camera?
> Maybe a Nikkor telephoto would suit but the prices are daunting. As to soft
> focus, Imagon comes to mind but for 10x8? You did not mention your budget.
> Hope this helps. Philip
> ----- Original Message -----
> From: "John Pass" <johnp@novia.net>
> To: "LargeFormat list" <largeformat@f32.net>
> Sent: Monday, March 18, 2002 4:29 PM
> Subject: [LargeFormat] Double checking.
> 
> 
>> Hello list,
>> 
>> 2) I'm looking for a good wide angle (35mm equiv to ~20mm), a good macro
>> and a decent portrait.  I like sharp lenses for macro and landscape
> (mostly
>> B&W, but good with color too!).  I'm really cluesless when it comes to
>> a good portrait lens (soft focus type).
>> 
>> 3) Confirm for me my math: the image circle of 8x10 is
>> approx. 325mm?
>> 
>> 
>> 
>> _______________________________________________
>> LargeFormat mailing list
>> LargeFormat@f32.net
>> http://www.pairlist.net/mailman/listinfo/largeformat
>> 
> 
> 
> 
> 
> _______________________________________________
> LargeFormat mailing list
> LargeFormat@f32.net
> http://www.pairlist.net/mailman/listinfo/largeformat