Posts Tagged Photography

So I sent my camera off to be modified…

…for hydrogen-alpha infrared. This mod will give it about 3.5 times the sensitivity to the glow of emission nebulas, and so enhance my ability to shoot astro photos.

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Pixels Per Planet

In a fit of doing something that will be useful to almost no one, anywhere, I have created a calculator page that will tell you how many pixels a solar system planet, or an object of your own choosing, will consume in your final DSLR image.

In order to figure this out, you tell the calculator just a little bit about your camera, your lens system, and optionally, an object of particular interest to you.

If you actually use this thing, let me know in the comments. I suspect that I may, just possibly, get one comment. From me.

Here’s the calculator page.

…and of course, if you find any bugs, let me know.

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Untangling FOV and "reach" for Canon Camera Bodies

A lot of people seem to be quite confused about the idea of camera “reach.” This idea relates to how much variance in magnification you actually get between different camera bodies. I thought I’d take a few minutes to clear this up once and for all. I assure you the following information explains the issue correctly. Once you’ve read and understood this post, you’ll have a perfect understanding of reach.

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EOS 40D to EOS 50D changes – All of them – In a Nutshell

For most 40D owners, the issue is simply: What has changed? I took a hard look at Canon’s specifications, press releases, and an early preview, and here’s the scoop:

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Canon leaks EOS50D details

Canon’s successor to the EOS40D is now a matter of public record.

The most important issue for me as an EOS40D owner is the degree of light sensitivity the new model camera offers; the 40D goes to ISO 1600 and will “push” to ISO 3200. The 50D goes to ISO 3200 and will “push” to ISO 12800, which is a huge improvement, particularly for wide-field astro photography which is an interest of mine, but also for low-light shooting in general. Higher ISO capabilities extend the range of situations any lens can be used in, a very welcome upgrade.

Among the sample images is one of a race car that was shot at ISO 1600; examining the dark areas of the shot, much less noise is evident than I would have expected based on my experience with the 40D. This is hugely encouraging.

The leak exposed a number of photos and diagrams that relate directly to the EOS50D; you can view those here, in a new flickr group I’ve created to support the camera and its users.

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Old Soldier

Old Soldier - Great Northern

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On Image Post-Processing for Enhancement

There exists a fairly vocal group of people who would tell us that a picture should be an exact representation of what you would see, as a human, had you only been there to see it. At least, as best as can be managed; that’s the goal. I find this to be only one very limited way to look at the world with tools of higher resolution and capability than my own. My own approach is… other.

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Back to my Music

My audio recording / performance gear

These images show some views of my music studio, which is set up in an 11′x19′ open loft above our main living space. You get to it via a bridge from the master bedroom loft on the other side of the building. I’m into rock, blues, metal, and I dip a bit into almost everything else. I just like to play, frankly. Even music I don’t like to listen to is fun to play.

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