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October 3, 2009

Objects in Motion: Part 3


Reviewing the picture of the Porsche I took on September 25 got me interested in trying to re-create the effect.

On Monday, September 28 (which happened to be Yom Kippur), I decided to shoot some more pictures at the intersection of Broadway and Spruce in downtown Boulder.

I was there from about 7:30 P.M. to a little after 8:00 P.M. Sunset was at 6:49 P.M. that day.

2009-09-28_19-29-52.jpg

exposure time = 1/8 second

Instead of using my 28-135mm I.S. lens, I decided to use my 50mm lens, since it goes down to f/1.8, whereas my 28-135mm lens only goes down to f/3.5. The lower the f-stop number, the wider open the aperture is, which lets in more light.

The downside was that I had to stand so far back from the street that the building I was next to obstructed my view of Broadway toward the south. I would have to stand on the corner, and when I saw a vehicle that looked interesting, I would have to take several steps back into position, and hope that I could focus on it and begin panning as it came into view.


2009-09-28_19-35-11.jpg

exposure time = 1/13 second

2009-09-28_19-42-29.jpg

exposure time = 1/15 second

2009-09-28_19-46-53.jpg

exposure time = 1/15 second

2009-09-28_19-49-58.jpg

exposure time = 1/15 second

2009-09-28_19-55-42.jpg

exposure time = 1/20 second

2009-09-28_20-02-29.jpg

exposure time = 1/20 second

2009-09-28_20-02-44.jpg

exposure time = 1/20 second

2009-09-28_20-03-36.jpg

exposure time = 1/20 second

2009-09-28_20-05-09.jpg

exposure time = 1/20 second

2009-09-28_20-08-16.jpg

exposure time = 1/20 second

The last photo, of the Mustang, was taken at 13th and Spruce. The Hotel Boulderado's Corner Bar is in the background.

Before heading home, I stepped into The B Side Lounge for a quick drink. However, I ran into Peter Sturms, the only photographer I know who works with film, and had him look over the pictures I had just taken. He told me that a rule of thumb is to set shutter speed as the inverse of the focal length; e.g., if I'm using a 50mm lens, then my shutter speed should have been 1/50 of a second. I'll try that next time, because I would like to get sharper images of the vehicles.

Anyway, a "quick drink" turned into several hours, as I had walked into the middle of a trivia game that I ended up participating in. At least I won some free drinks.

Posted by Robert Racansky on October 3, 2009 at 5:43 PM

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