Monday, December 31, 2007
Thursday, December 27, 2007
Let Me Explain
Someone asked about cameras. I don’t know everything about cameras at all, but I know enough to go on long past the point where everything I’m saying is dull and useless.
I have a pretty cheap digital camera that’s enough to keep me happy. Officially, it’s a Canon A720 IS, available for about $200 if you look. You can spend a lot more on a fancier camera. Canon makes one or two cheaper cameras in the same line, and some more expensive variations of more or less the same thing before you get to their next tier of more fancy equipment.
I got this camera a couple of months ago because on my old camera I felt the automatic focus was no longer working perfectly, and there were a couple of dust spots that showed up consistently in every frame, and after traveling many hard roads with me the camera had been dropped enough times that it didn’t always know whether a picture was taken horizontally or vertically. The old camera still works, mostly. But it was nice to have the new one.
The new camera has a 6x zoom instead of a 3x zoom like the old one did. (That’s the optical zoom, not the digital zoom that goes beyond the optical.) The new camera takes pictures that are 3,264 x 2,448 pixels (8 megapixel); the old camera’s pictures were 2,272 x 1,704 (4 megapixel). That means that in a picture of the same size, there’s more detail. That means I can crop the picture tighter (to put online) or print it larger, with less graininess showing. When you combine the better zoom with the higher resolution image, you can grab a picture with much better detail from far off.
Properly working autofocus helps too, plus this camera has “image stabilization,” which means that if the camera moves slightly as I take a picture, it’s supposed to correct some of the blur. That should also be helping with sharp, clear details. I’m not sure how often it really adds anything.
Other than that, the new camera is very similar to the old one (which was also a Canon—I was happy with it, except that someone had mistreated it too often). When I compare pictures from the new to pictures from the old, I see exactly the difference suggested above: better detail in pictures. Sometimes the difference is dramatic.
Me, personally, I like a camera that runs on AA batteries. You can get ’em anywhere, and I have a few sets of rechargeables. Other people have other needs. You can find almost the identical feature set on other cameras (including a Canon line) that do not use AA cells. I specifically picked the camera that uses AAs.
I’ll mention in passing that this camera has a nice big screen on the back of it to let you see what you’re pointing at, or what picture you just took. I have seen cameras that take “better” pictures but have smaller view screens on the backs of them. That makes it really hard to tell whether you’re getting any worthwhile pictures when you’re on the road.
Other brands will offer similar features, and I’ve got nothing against other brands. Push comes to shove, I’d probably recommend getting at least 6-megapixel resolution, and the best optical zoom you can. (Ignore the digital zoom; it makes things bigger but grainier.) The one other note I’d insert is that when you’re in a hurry to snap a quick shot before it disappears, you sure do resent a camera that takes a few seconds to open up and be ready, as my Canon does. On the whole, though, I’m happy.
Technology is pretty good at replicating sound. It’s not perfect, but we can make pretty accurate reproductions of what something sounded like.
Technology has not caught up to the capabilities of human eyeballs. The eye is able to spot finer detail than a camera can (digital or film), and the eye adjusts better and faster to variations in brightness. Digital cameras have improved on the abilities of old film cameras, but they’ve still got a few generations of improvements before they capture things as naturally as our eyes do.
This is why you have to think a little, sometimes, when you’re taking a picture. Cameras give you automatic settings, but they also give you tools you can use to make up for the shortcomings of the automatic assumptions. Sometimes it’s as simple as knowing when to turn off the flash to catch a silhouette or the warmth of natural light. Sometimes you go a little further.
Beyond camera settings, I’m also not shy about accommodating further after the picture is taken, to make a thing look like what I saw. (I’m not proud either: Sometimes the camera shows me something better than what I was hoping to catch.)
This was a picture I took (and posted) a few days ago. Better moon shot than my old camera could do. What I did not point out then was that this is the absolute limit my camera can reach with the optical zoom. Unlike most pictures I put up here, you can’t enlarge this any further. Here’s what the original frame looked like:
My camera has a 6x zoom and an 8-megapixel image resolution. It’s easy to find cameras with better lenses (10x zoom or 12x zoom) and higher image resolution (12 MP or 18 MP). You spend a little more. And, if your settings are right, you get better detail when you take pictures of the moon. (Note that to get this image I had to tell the camera to take the picture at a faster shutter speed than it wanted to use.)
Here’s another recent example of tweaking a picture after I took it. Again, taking this picture at maximum (optical) zoom, there was a lot in the frame that wasn’t adding anything to the picture, so I lopped out what wasn’t helping. And then, for better or worse, I adjusted the color slightly, so the island would show up a little better. It made the water a richer blue, which maybe was aesthetically pleasing too:
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I actually kinda like the overall picture, with all the foreshortening from the forced angle, but there’s a lot of distraction in the frame (is that a fire extinguisher?), and what fascinated me was the detail in the stamping on the ends of the spokes. (That’s what they are.) This is a 19th-century technology refined down to be the most efficient solution for a particular need. You glance at a wheel and see spokes, and all you notice is they’re a bunch of wires, but they really show exquisite craftsmanship at a detailed level.
Also, I had just (accidentally) figured out how to correctly use the macro focus feature on the new camera. 21st-century technology let me grab images of the finest the 19th century had to offer. But then to call out the part I liked, I cropped out all the extraneous stuff from the frame. (This is all done on the computer, after the picture is already taken.) You end up with a simpler, cleaner shot that really pops out what I’m excited about:
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There’s nothing terribly interesting or photogenic about spokes. It would be easy enough to let the camera make all the calls, and end up with a picture like this:
You pretty much know going in that you’re not going to end up with an Ansel Adams lithograph. And nine times out of ten, you’re going to end up using the camera’s automatic settings, either because they’re good enough or because you don’t have time to set up anything more crafty. But a tiny bit of advance thought every now and then might make a picture tell your story a little better.
Stretching to try something new on one in ten pictures, even on throwaway shots, also is a good way to learn what the camera can do, so that when you run across a more meaningful shot that ought to be treated the same way, you know how to get there.
I have a pretty cheap digital camera that’s enough to keep me happy. Officially, it’s a Canon A720 IS, available for about $200 if you look. You can spend a lot more on a fancier camera. Canon makes one or two cheaper cameras in the same line, and some more expensive variations of more or less the same thing before you get to their next tier of more fancy equipment.
I got this camera a couple of months ago because on my old camera I felt the automatic focus was no longer working perfectly, and there were a couple of dust spots that showed up consistently in every frame, and after traveling many hard roads with me the camera had been dropped enough times that it didn’t always know whether a picture was taken horizontally or vertically. The old camera still works, mostly. But it was nice to have the new one.
The new camera has a 6x zoom instead of a 3x zoom like the old one did. (That’s the optical zoom, not the digital zoom that goes beyond the optical.) The new camera takes pictures that are 3,264 x 2,448 pixels (8 megapixel); the old camera’s pictures were 2,272 x 1,704 (4 megapixel). That means that in a picture of the same size, there’s more detail. That means I can crop the picture tighter (to put online) or print it larger, with less graininess showing. When you combine the better zoom with the higher resolution image, you can grab a picture with much better detail from far off.
Properly working autofocus helps too, plus this camera has “image stabilization,” which means that if the camera moves slightly as I take a picture, it’s supposed to correct some of the blur. That should also be helping with sharp, clear details. I’m not sure how often it really adds anything.
Other than that, the new camera is very similar to the old one (which was also a Canon—I was happy with it, except that someone had mistreated it too often). When I compare pictures from the new to pictures from the old, I see exactly the difference suggested above: better detail in pictures. Sometimes the difference is dramatic.
Me, personally, I like a camera that runs on AA batteries. You can get ’em anywhere, and I have a few sets of rechargeables. Other people have other needs. You can find almost the identical feature set on other cameras (including a Canon line) that do not use AA cells. I specifically picked the camera that uses AAs.
I’ll mention in passing that this camera has a nice big screen on the back of it to let you see what you’re pointing at, or what picture you just took. I have seen cameras that take “better” pictures but have smaller view screens on the backs of them. That makes it really hard to tell whether you’re getting any worthwhile pictures when you’re on the road.
Other brands will offer similar features, and I’ve got nothing against other brands. Push comes to shove, I’d probably recommend getting at least 6-megapixel resolution, and the best optical zoom you can. (Ignore the digital zoom; it makes things bigger but grainier.) The one other note I’d insert is that when you’re in a hurry to snap a quick shot before it disappears, you sure do resent a camera that takes a few seconds to open up and be ready, as my Canon does. On the whole, though, I’m happy.
Technology is pretty good at replicating sound. It’s not perfect, but we can make pretty accurate reproductions of what something sounded like.
Technology has not caught up to the capabilities of human eyeballs. The eye is able to spot finer detail than a camera can (digital or film), and the eye adjusts better and faster to variations in brightness. Digital cameras have improved on the abilities of old film cameras, but they’ve still got a few generations of improvements before they capture things as naturally as our eyes do.
This is why you have to think a little, sometimes, when you’re taking a picture. Cameras give you automatic settings, but they also give you tools you can use to make up for the shortcomings of the automatic assumptions. Sometimes it’s as simple as knowing when to turn off the flash to catch a silhouette or the warmth of natural light. Sometimes you go a little further.
Beyond camera settings, I’m also not shy about accommodating further after the picture is taken, to make a thing look like what I saw. (I’m not proud either: Sometimes the camera shows me something better than what I was hoping to catch.)
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One more example:
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Also, I had just (accidentally) figured out how to correctly use the macro focus feature on the new camera. 21st-century technology let me grab images of the finest the 19th century had to offer. But then to call out the part I liked, I cropped out all the extraneous stuff from the frame. (This is all done on the computer, after the picture is already taken.) You end up with a simpler, cleaner shot that really pops out what I’m excited about:
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There’s nothing terribly interesting or photogenic about spokes. It would be easy enough to let the camera make all the calls, and end up with a picture like this:
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Stretching to try something new on one in ten pictures, even on throwaway shots, also is a good way to learn what the camera can do, so that when you run across a more meaningful shot that ought to be treated the same way, you know how to get there.
Wednesday, December 26, 2007
Tomorrow Is a Rest Day
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I’ve been riding somewhat longer increments the past few days, though not really long enough to be ready for a 60-mile ride. But I was itching to test myself against the big old monster hill on Newport Coast Drive. It’s too long since I attacked it, and I was curious to see what my heart monitor would have to say about it.
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I’m almost embarrassed to say how little attraction a White Christmas holds for me.
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Somewhere around the southern end of the ride, I realized that I was not going to get home before sundown. Normally after a big effort, in the summer when the days are long, I don’t mind poking around slowly on the way home, stopping for lots of pictures. Today it looked as if I’d better keep mushing along, with no delays or easy pedaling.
Right around the same time, the wind also picked up. It had been coming from the south and east (naturally) when I was headed south and east. It flipped around and started coming from the west as soon as I turned around and started heading home.
I didn’t mind the wind switch; I have come to expect it in the late afternoon. But it seemed to be blowing with some vengeance. In fact, as I pushed harder and harder to beat the sundown, the wind stirred up all the more.
I didn’t check what speed it was blowing by the time I got home. I will say that in the last weary mile I popped my shoes out of the pedal clips in case a gust tried to knock me over. By 10 p.m. the wind was reported at 25 m.p.h.
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Oh, and that 60-mile ride? After I got home, I was a little disappointed at how long it had taken me to go 60 miles. When I programmed it into MapMyRide.com, I found the ride I took today was really a tiny bit over 75 miles.
I was pretty beat by the end, but not demolished. After eating and drinking, I was very happy to sit still for quite a while. A hot shower felt good too. The wind was nowhere near as cold as what most of the country gets in winter, but it was no balmy zephyr either.
I wouldn’t do it if I didn’t enjoy it. I went out this morning to get tired and test my legs, and I did. Also had a great ride through some delightful scenery.
All the same, I think tomorrow I’ll stick to a shorter run.
Tuesday, December 25, 2007
Christmas in the Subtropics
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In the picture above, at 50 miles, you can just barely see some kind of antenna array on the highest peak on the island. It almost looks like a defect in the lens or a bird flying by at just the right moment, but it shows up in other frames too.
The tradition is that when you can see San Clemente, it’ll rain within three days. So far, no such thing has been forecast for this week.
Merry Christmas!
Sunday, December 23, 2007
Ancient Relics
Saturday, December 22, 2007
Expose Yourself
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Friday, December 21, 2007
The Sun Also Sets
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The shot above was taken with the new camera, just after sunset. That bridge is about 12.75 miles from the camera.
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One day when I’m feeling ambitious, I’ll dig up an old negative and show the resolution from the same spot with 35mm film and a 300mm lens. My recollection is it was comparable to the old digital camera.
This is what the bridge looks like from a somewhat closer vantage:
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Cut ’Em Off at the Pass
As someone who has on occasion paid tickets for being parked at expired meters—once while Christmas shopping for children’s books, no less, adding to my holiday fervor—I’ve never had trouble sympathizing with Paul Newman’s crime in Cool Hand Luke, which he described as “settling an old score.”
The law is there to protect us all, so of course I sympathize with it too. But I will note that when I lived in New York, I found the NYPD would not allow their parking enforcement crew to even use the same color cars as regular cops drove. The regular cops knew what people think of parking cops, and they wanted it to be clear that whatever you might think of the NYPD with its long history of graft, corruption, Mob influence, and occasional brutality, at least they weren’t parking cops.
I have to chuckle, then, at recent reports from Atlanta that not only has someone cut off the heads of 40% of the city’s parking meters, but the regular cops aren’t even investigating it as a crime.
The law is there to protect us all, so of course I sympathize with it too. But I will note that when I lived in New York, I found the NYPD would not allow their parking enforcement crew to even use the same color cars as regular cops drove. The regular cops knew what people think of parking cops, and they wanted it to be clear that whatever you might think of the NYPD with its long history of graft, corruption, Mob influence, and occasional brutality, at least they weren’t parking cops.
I have to chuckle, then, at recent reports from Atlanta that not only has someone cut off the heads of 40% of the city’s parking meters, but the regular cops aren’t even investigating it as a crime.
Tuesday, December 18, 2007
The Party of the First Part
Sunday, December 16, 2007
Doug Aroma
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There’s an even better way to make your car smell good. Get the tree itself.
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Someone told me the Douglas firs are the ones with the great smell. He said the Noble firs look fine, but they don’t smell the same.
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Maybe next year I’ll get a blinking reindeer.
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