Bernie and all, I have been in the market for a digital camera for some time now and have narrowed my search down to two. The Sony DSC-F717 and the Nikon KoolPix 5700.
They both have fast shutter speeds 1/2000 and 1/4000 respectively. One of the features of each is that they can create a multishot/multiburst single picture collage of 16 shots of high speed motion sequences at 320x240 or 640x480, depending on the camera or mode selected. I have heard in test reviews and advertisements that they can then print a 16X20 picture of the captured high speed 16 shots, but have seen no examples of such. When I was taking lots of pictures years ago with a Cannon A1, I bought a multiburst Flash attachment that would flash a series of 5, 10 or 15 flash strobes on the same negative using your existing high speed flash. I fooled around with it quite a bit and got some decent shots of golf swings. Also got some pictures of bumble bees flying around on a flower that were interesting too. Various moves have misplaced for now these pictures, but this thread got me interested and have started looking for the multi-flash unit. I used it with a Sunpack Flash which I may have sold, and the unit too. Anyway, my question and interest here is does anyone have either of the two digital cameras, the KoolPix 5700 or the Sony DSC-F717. I think my choice is the 5700, but they do not have USB 2.0 yet and the Sony F-717 does. The Sony also has a better low light focusing system, but has other features lacking that the 5700 does have. If you do have either of these cameras, would be interested in the high speed multishot or multiburst functionality of either one. When I get the chance, will visit a dealer that has one of each and see for myself, but just wondered if anyone had experience with these cameras and the high speed capture mode they claim to have. Thanks in advance, Dr. Voo RxGolf Custom Clubs -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Bernie Baymiller Sent: Saturday, January 25, 2003 2:25 PM To: [EMAIL PROTECTED] Subject: Re: ShopTalk: 20 min talk Alan, Yes, my dad worked with Edgerton, Germehausen and H. E. Grier at Spalding making a lot of ultra high speed photos of Bobby Jones and Jimmy Thompson (among others) in the late 1930s. Dad was Director of Golf Research working under Lab Director J. Victor East at that time. Most of Edgerton's multiple strobe exposures of the golf swing were at 1/100,000 of a second with a 1/100 second interval. Two of these are in the BJ pics on John's Resource Page. Spalding also developed a machine to analyze and pull data from the photos (Stroke-ometer Graph method). I have some of this material in my files and have sent a few of BJs and JTs velocity and acceleration charts to Dave, Graham and a few others. If you would like any particular scans of any of this material, let me know. One of those sequences was of ball impact...showed ball was on face for .0004 seconds. That series of 8 pics is the last photo on the Clubmaker Online Resource Page BJ swing series (#12). >Even at 1/1500 of a second exposure time, timed just at > impact, the shutter will be open for the entire impact/rebound process and > all you would see is a blur. Even blurred, it might show the shaft and hand position, which is what I think Graham was interested in seeing...if he can luck out on the timing and get the blurred shot just prior to impact. If he can shoot a video sequence on his camera, and starts shooting as the downswing starts, I think he'd have a better chance of getting one pic near impact than if he tried to time one shot by eyeball method. Have no idea what the downswing to impact time is, but if a whole swing tempo is about 1.4 seconds, the downswing could be about a quarter of a second? At 30 frames a second, he could get maybe four or five pics of the down swing? Don't know, but guess it would be fun to try. Bernie Writeto: [EMAIL PROTECTED]
