TaggerFox makes some good comments
regarding frame rate and its association with slow motion playback and shutter speed.
I'll try a different spin.
What you have, HDC-SD60, in a consumer cam is fine - for normal stuff and normal fps and shutter speed. One thing faster shutter speed does is freeze the action because the shutter is open for a shorter time. Most consumer cams, in auto-shutter mode, will happily run the shutter around 1/60 to about 1/120 of a second in bright sunlight. With fast action, a LOT can happen in 1/60 of a second - this is seen as blur in a single frame on the captured video.
As with still cameras, making the shutter faster - perhaps 1/2000 of a second - will allow better freezing of the action. But we are stuck with regular 30 fps and the "slow-motion" playback slower than about 15 fps is where is starts to appear jerky.
If there are more frames per second to store images, then slowing the increased number of frames PLUS the fast shutter speed is "best quality". The high speed frame capture played back at 30 fps results in nice slow motion and the increased shutter speed freezes the action.
Sony has "SmoothSlowRecord" (sometimes now referred to as "Golf Shot") in the upper end of its consumer line (~$1,100). I think the HDR-CX360V is the least expensive flash memory cam with it - I could be wrong, but you can look into that. They allow a burst of 120 (or 240) fps high speed capture for 8-12 seconds (depends on the camcorder and the amount of built-in buffer available). When played back at 30 fps, it takes a while to play it all back.
There are a few prosumers that do a decnt job of "overcranking". I think the Panasonic AD-HVX200 is one... there is a pro-grade Sony (XDCAM) in there somewhere. I *think* there are two things against adding high speed fps capture to a consumer cam... first, the processor required to process the huge amounts of data needs to be a monster. Add in high definition, and the data throughput/processing requirements are huge, then, there's storage. The camera will be eating flash cards like candy. In either case, the *majority* of folks won't use the feature, so its expense is disposable - like the NightShot mode that has been removed from the lower end Sony HandyCams to reduce cost. Its all about balancing features in demand vs cost of manufacturing. And a robust processor *could* reduce battery time. Capturing, compressing, and writing the data stream to the storage media will need lots of power. That's one reason (of several) why real high speed cameras are so expensive. Plus, the imaging chip needs to be HUGE for the limited light allowed in with the really fast shutter. And *those* are expensive.
As TaggerFox pointed out, there is ALWAYS a tradeoff. In this case, the Exilims can do high speed video capture for decent slow motion playback, but their low-light behavior and video resolution/quality is not so good. If you *must* capture high speed video indoors, then you *must* add light.
By the way, Springtex, why did you think you were "getting something capable of reproduction in slow-motion"? I found nothing in the camcorder's spec sheet or instruction manual that refers to high speed capture or slow motion playback capabilities (other than the "Sports" scene mode preset menu item - the description reads like it is a fast shutter only) and the camera playback in slow motion is "normally 2/3 the speed of normal playback" (~20 fps). You can do the better than this and have more flexibility, by importing the video to a computer based editor and changing the speed of the clip (assuming your video editor has the capability). I can slow captured video from 30 fps to about 14 fps and it still looks decent (using a "frame blending" option in the editor) especially when combined with a shutter speed around 1/1500 second to freeze the action. But play this back at 30 fps and there is an irritating "strobe" effect in the video.
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