Re: Whopper II

[T3D John Bercovitz <bercov@xxxxxxxxxxx>]

Big Bad Bob chastizes poooooor lil ol me 8-): 

> And John B. comments on Paul Boyer and Bob Howard and really
> screws it up as depth of field is not a determination of perspective,

I had said:
> With that
> stopped down aperture, you get things near and far into focus.

What can I say?  Had nothing to do with perspective.  It was there
to say you could get a lot of depth of field because the linear
(not relative) aperture is small.  That furthered my argument that
perspective was thought of by the author as something that shows a
lot of depth.  Personally, I may like Mike K's argument better than
mine now that I've seen his.

> And one could argue that
> all lenses have same depth of field at same f/stop (if blown up to
> equal magnification!!).

One could argue that, but I don't think you would go for the same
final magnification in a photo taken with a short lens unless you
crop heavily because the print would get too big.  If you crop 
heavily, you should/could have used a longer lens in the first place
because you've just done the equivalent.

> Oh what a [tangled] web we weave.

I wasn't setting out to deceive, honest!  8-)  Sorry for muddying
the waters.  I should have made it more clear what it was that I 
was thinking and what it was that I was guessing _might_ have been  
the author's line of reasoning.

John B


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