> All those features mentioned below by Godrey DiGiorgi
> will not make ANY DA/APS lens/format perform as well as a really good
> FF pentax Lens ( even some of the SMCT screwmounts over
> 30 years old ) on a good FF camera in terms of sheer
> image quality. This is what I have been talking about
> in the thread. With DA/APS you have format limitations
> that cannot match what is possible with really good, even OLD
> FF lenses. Of course we all know there is no Pentax
> FF DSLR camera yet, but to say these OLD lenses are
> not as good as DA lenses is really not true. They are
> DIFFERENT, not better or worse, and if just consider
> them for what they are, LENSES, they can create
> a better quality IMAGE than DA lenses can once
> the proper FF body comes along to take full advantage
> of this capability.
>
> jco
>
You're not correct here. There *ARE* featuers of newer lenses
that make them better than old ones:
- Better coatings
- Potential APO in the formulation
- Optimized to project the image onto the sensor perpendicularly... not at
an angle. Film was much more tolerant of angle of incidence than are
sensors.
Non-optical ways they're "better:"
- A superset of features can be arguably called a way that it's "better."
(AF, auto-aperture, MTF transmission info, etc)
-Cory
--
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
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