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Sandra | all galleries >> Frank's Corner >> Digital Photographs > just a matter of time
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just a matter of time

just a matter of time

The exposure on the right the second hand of this wristwatch is frozen at a shutter speed of 1/15 sec. On the left the exposure was 8 sec. I expected the second hand to appear as a blurred smudge but it disappeared altogether without a trace!
Thinking about it, I realized that the perfectly smooth mechanical sweep of the second hand is the cause. A digital clock with its crude sweep of discrete steps give a completely different result http://www.pbase.com/boscodamus/image/88765559

This was shot with the much maligned Pentax K-01 which I got new on the cheap since it was discontinued after only one year of production....i.e. a commercial flop. Still in all it is image-wise equivalent to a K5D and thus capable of a very competitive snap.

Pentax K-01 ,Pentax smc P-A* 200mm f/4 Macro ED
left: 8 sec @ f/32 iso 200; right: 1/15 sec @ f/8 iso 1600 full exif

other sizes: small medium large original
J. Scott Coile10-Sep-2013 14:32
A much shallower DoF on the right too.
Paolo Peggi (aka Bracciodiferro)09-Sep-2013 17:46
Good excercice Mr. B.
Paolo
V
:)
Marcia Colelli09-Sep-2013 13:46
Wonderful details and observation V
Tom LeRoy09-Sep-2013 10:33
Terrific set, your right... the Rolex smooth second hand made the shot work. Nice job with the K-01. V
Sam_C09-Sep-2013 06:40
Amazing set of shots Bro! That K-01 is going to be a collectable for sure! V++
Helen Betts09-Sep-2013 02:18
Fascinating images, as is the observation. I also like the image you linked us to. Excellent macro captures, and certainly is a beautiful watch. V.
Paco López08-Sep-2013 18:01
Interesting... Good experiment and thanks for the info!! V!
Walter O. Koenig08-Sep-2013 16:32
An interesting experiment. The logical next step is a 3 or 4 second exposure. Nice watch by the way, I have the Men's model. "V"
bill friedlander08-Sep-2013 15:30
A couple of fine macro captures. For your next trick lets make the minute hand disappear:-) V
Fong Lam08-Sep-2013 07:38
Fantastic close-up with superb details to illustrate your keen observation of the watch's smooth mechanical movement, Frank....V