Re: [OM] opinions of the OM 500mm F8.0 reflex lens?

[Chuck Norcutt]

Interesting.  I searched ebay before I wrote my response and found no 
Questar items at all except some minor accessories and literature.
Chuck Norcutt


On 4/23/2015 1:54 PM, Sawyer, Edward wrote:
> Where to get a Questar 700? On ebay of course:
>
> 171727252030
>
> 121604495476
>
> re: contrast:
> > I know that was a big deal in film days. I can't see where it matters
> > with digital. Shoot Raw, convert to 16 bit, use
> Levels to pull the ends of the histogram out and adjust the midpoint if
> needed - - - and there you are, all the efforts,
> successes and failures of lens design for contrast are washed away. Add
> LCE and Curves and you'd never know it wasn't
> taken with a nicely contrasty lens.
>
> Um, no. just expanding the histogram to change the contrast does not
> magically recreate the information lost to a low-contrast lens. If only it
> were that easy.  A lens with good contrast will always capture more
> information than a low-contrast lens. If artificially modifying contrast
> was enough, everyone would have been designing low-contrast lenses back in
> the day and just using high contrast materials with them (film, paper).
> Such is not the case, obviously.
>
> -Ed
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