On Jun 28, 2012, at 10:47 AM, David J Brooks wrote: > On Wed, Jun 27, 2012 at 6:15 PM, Larry Colen <[email protected]> wrote: >> In the past couple of years I've noticed a very annoying trend with viewing >> distance. In too many situations there tends to be a range that is too far >> for me to see without my glasses, and too close for me to see with them. >> And yes, I have progressive lenses. > > I have those also. It can be a pain to find that sweet spot. > > Dave >>
I think my glasses tend toward liberal rather than progressive. But of course the position will vary depending on what I am reading. They are not rose colored glasses though. Seriously though, proper viewing distance for hand-held objects is defined by the length of your arms or, more precisely, the length of your arms when bent at roughly 90° to lessen the strain of holding the object. That distance is about the same for everyone, and most will have sufficient mobility in their arms/hands to be able to make any small adjustments needed to compensate for their own differences from the average distance. The size of the object (photo, printed text, whatever) should vary to accommodate that average viewing distance - e.g., changes in text size. And the answer is 14-16" IIRC. stan -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
