P3D Pulfrich

[Dave Combs <dcombs@xxxxxxxxxxxxxxxx>]

Mark Dottle wrote:
>This past weekend I enjoyed some NFL games by watching my DSS broadcasts
>by alternating two pair of pulfrich glasses. I made two pair ( right eye
>open...and left eye open ) so I could follow the offense depending on
>the direction of play on the ball field. I really enjoyed the frequent
>enhanced depth effects ( probably 75-80% of the time the depth effect
>was strong)
>After a while I noticed that only one pair of glasses seemed to suffice
>for the whole game, probably due to the constant motion by players
>moving in opposite directions. I noticed no apparent difference between
>the glasses regardless of the direction of play. Surprising to me was
>the amount of depth present in the close-up shots as the camera panned
>or zoomed very slowly, for example shots of a player walking to the
>sideline, or shots around the huddle while calling the plays etc. Has
>anyone else routinely watched the games ( or other sports) with pulfrich
>glasses and what are your experiences? Do you suppose the increased
>resolution of DSS has something to do with the quality of the pulfrich
>effect? ( not considering the moton of the camera) Thanks.
>                                            
Football games are a great way to observe the Pulfrich effect mainly 
because there is so much lateral movement, mostly by the players 
themselves. Although sometimes what you get is pseudo-stereo. Since the 
perception of depth in Pulfrich is achieved by differentials in movement 
speeds across the screen, players moving faster than others will appear 
to be at a different depth position than the relatively slower moving 
players.

I do believe that any time we can improve the resolution of the image on 
the screen, the Pulfrich effect (or any 3-D effect for that matter) is 
enhanced. I would love to be able to produce a Pulfrich video using HDTV 
resolution. Can you imagine the realism that would provide. I can't wait.

Dave Combs
Combs Music International
421 Cedar Trail
Winston-Salem, NC 27104 USA
E-mail: dave@xxxxxxxxxxxxxx
Internet Home Page: www.combsmusic.com
800-932-6627 (USA & Canada)
336-760-0037
336-760-3855 (fax)


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