motion blur - aperture priority mode by summerfield

motion blur - aperture priority mode

f/5.6
ISO 100
focal length: locked at 73mm
Canon 60D's 'partial' metering

top row was the first run, started at 1/20 sec and finished at 1/25 sec. the reddish coloration at the end is from the kitchen lighting.

bottom row, second run, started at 1/40 sec and invariably went to 1/50 to 1/30 to 1/40 sec. why is that?
December 3rd, 2014  
@northy - so i can't get the camera to take multiple shots if it's set to delay mode. i know this is a stupid question, so pardon me, but why did the exp numbers change so much in the bottom row? is it the way the light was hitting the coin? the exposure is set at 1/20 but obviously it changed as i was shooting the coin.
December 3rd, 2014  
Awesome!
December 3rd, 2014  
@summerfield @summerfield @livvy

The camera changed the shutter speed to expose the image correctly using the metering setting to determine it.

Now depending on how the light was on the coin and the light on the background was the camera will adjust.

Do you know what meter setting it was at? I suspect it was center weight as the expose on the images is very different across them.
December 3rd, 2014  
December 3rd, 2014  
Love all the motion going on here. I would suspect it was the position of the coin and the amount of light reflecting off of it, since the background didn't change, and most likely the lighting didn't change. I agree with Brendan, suspect center weighted or spot metering, on the coin, thereby causing the varying shades of grey on the background.
December 3rd, 2014  
@agima @bill_fe @northy
i checked my camera and it's on 'partial' metering. thanks, guys!
December 3rd, 2014  
Very cool. It kind of looks like a ring in a few shots :)
December 3rd, 2014  
@summerfield Partial? Is it partial to chocolate?
December 3rd, 2014  
Very interesting experiment. I like your results.
December 3rd, 2014  
Cool way of showing how differently the camera was seeing the same situation. Definitely shows lots of motion. I have no idea how to answer your question!
December 3rd, 2014  
nice :)
December 3rd, 2014  
don't understand partiality except in food concept , but love the pictures and enjoyed all the answers, glad you 365 gang are nice as well as clever!!
December 4th, 2014  
So cool!
December 4th, 2014  
very cool exercise... and i agree with what Brendan said... i would never deliberately set out to catch motion blur in aperture priority mode, btw... for the simple reason that the camera is going to decide the shutter speed for you, and for deliberate motion blur, i want to be in control... i would almost always pick manual mode, unless i was shooting candid subjects in the street in changing light, in which case i would likely pick shutter priority, and if the light was pretty low, possibly put iso on auto...
December 4th, 2014  
This whole thing made my brain hurt!
December 4th, 2014  
I have no clue as to any of the above math and what it means! LOL But I do like the chart and if I ever decide to do this, I'll remember to come here and see what the settings did!
December 4th, 2014  
What make & model camera? I've never heard of partial.
December 4th, 2014  
@bill_fe - canon 60D
December 4th, 2014  
Great knowledge behind this series of shots. I'm in awe.
December 6th, 2014  
Great shot, lovely collage
December 6th, 2014  
This is fantastic for the challenge/theme. I just saw it in the finalists. You have my vote!
December 7th, 2014  
@taffy - thank you, taffy. hope all's well. and have a good trip!
December 10th, 2014  
So very cool I must say.
December 19th, 2014  
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