Here is my video review of the Digislider.
So, for the quick version:
Lots of different options, crank handle, fast motor, slow motor
Plenty of travel for longer moves
Well built, can take some knocking around
Very nice smooth motion when using motors
Heavy (the downside of well built). Usually you are going to need a tripod and
lightstand or two tripods to use it.
When using crank, motion isn't perfectly smooth (although a lot of this is down to
the skill of the operator, it's just not going to be as smooth as a bearing based slider.)
That being said, it's pretty decent for the price, see the video for examples of how
smooth it can look with the crank.
When using the motors, motion is very smooth and consistent, BUT there is the noise
of the motor to consider. This can make it a no go for interviews for example.
I haven't figured out how to use it in vertical mode as the motor doesn't seem to
have enough power when I try it.
All in all, it is a very versatile slider. You can use it for time lapse 'motion control' as
well as video 'dolly' moves. And you can either use a motor or the hand crank. For
the price, it's hard to beat.
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