Godfrey DiGiorgi wrote:

>On Apr 4, 2007, at 12:47 AM, Bob W wrote:
>
>  
>
>>This approach is the wrong way round really.
>>
>>The ideal size across the diagonal for a picture should be about half
>>the viewing distance. The recommended viewing distance for a computer
>>screen is about 30 inches (75cm).
>>
>
>Sure, fine theory. But the "recommended viewing distance" is hopeless  
>for my eyesight and comfort ... I have my computer glasses tuned for  
>a comfortable 23" viewing distance. Farther away than that and text  
>on screen is hopeless unless I make it too big to be useful.
>  
>
I have tri-focals - no-line and  the LCD screen is 19" from my face.  I 
used to pooh-pooh LCD's
but when my TV died a couple of years ago and I replaced it with the 
healthier by far LCD screen
(not HIGH def something called "enhanced" def) - when my CRT died I got 
the PRoview   - my eyes
have felt much better since.. but I have a problem with glare so I have 
the computer set so that every
background I work on is gray or darker...  I can't read anything on line 
against a white background
without it becoming painful.

A few of you can attest to how large I have the fonts set on my machine 
for email :)

ann

>  
>
>>For optimum viewing therefore you need to decide for yourself
>>what is the target screen size and resolution, and make the largest
>>picture you can that fits, allowing the audience to take in the whole
>>thing without scanning or scrolling. The audience will just have to
>>lean a bit closer to appreciate the fine detail of the picture.
>>    
>>
>
>Yup. What detail is visible anyway. An A3 print is so much nicer to  
>examine closely.
>
>Godfrey
>
>  
>



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