Re: [APML] Two More Wide Field Images

[Chuck Vaughn <aa6g@aa6g.org>]

Ray,

Yes, the filter is rear mounted. That lens of his is f1.5 and he stops 
it down to f2.

The thing I like about the wide field images is that it puts into 
perspective what is bright and what is faint. Most narrow field images 
are adjusted so that each object appears equally bright.

Chuck

-----------------------------

> So this must be a rear-mounted filter on that LF lens, right? Because 
> 9 inch focal length at f2 = 230mm f2 = 115mm aperture, at a minimum. 
> If the filter were front mounted, the f-stop would really be 230/72 = 
> f3.2. (But that's still pretty fast!)
>
> Technical details aside, Bob's images are amazing. What a shame that 
> LF and MF options are beginning to dwindle - both the films and the 
> hardware. Tamron have just announced that the entire range of Bronica 
> MF cameras will no longer be manufactured. On the other hand, Mamiya 
> have just announced the Z2, a 36x48mm digital back/camera, compatible 
> with all their M645 lenses.
>
> Ray "whose enthusiasm for the future power of digital is sorely 
> tempered by the way it is eradicating film-camera options" Butler

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