Using a photo

I got an e-mail today in which someone asked to use a photo of mine for a Christmas prayer.

A photo of mine

This use is well within my creative commons license, but it’s always a nice touch when I’m shown how my photos are used. Besides, I always had a soft spot for Episcopalians. 🙂

I noticed they’re using Joomla as their CMS. That’s interesting. Their template seems to be missing deep links, though.

[More of photo usage after the jump]
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RAW color space

A very interesting question popped up on Flickr: Is there any technical advantage of specifying AdobeRGB or sRGB in a Camera RAW file?

Almost all digital cameras obtains color by placing a color filter in front of identically constructed photodiodes. The RAW file just stores digitization of those monochromatic values. Color profile information on a RAW file is stored in the metadata, not applied to the file itself. So there is no technical difference between the two profiles besides hinting to your image processing applications your preferred color space.

There is a slight theoretical exception here: the RAW format isn’t a standard so there is no reason why a camera manufacturer couldn’t record different raw data based on the intended color space. This might be advantageous in a camera like the Nikon D200, which does color processing in analog space before digitization. The intended color space could theoretically provide hints to the camera so as to minimize interpolation to the resulting color space.

Of course, this doesn’t happen. If Nikon did such a thing, Adobe would probably have a conniption and call it “encryption.” Sometimes I wonder if Nikon’s White Balance code page in the D200 was intended to give Nikon engineers the flexibility to take advantage of this camera trait—I know of no other camera that uses white balance information to modify digitization—in a future firmware release…and corresponding Capture NX update.

Now we’ll never know.

[Adobe Camera RAW and color profiling after the jump]Continue reading

Book Review: Tuesdays with Morrie

As the BART pulled in to the penultimate stop, I was half a dozen pages from the end of tuesdays with Morrie: an old man, a young man, and life’s greatest lesson, a “long paper on what was learned” as the author comes to the terms with the slow deterioration and death of his favorite teacher.

An old lady who sat across from me for most of the train ride, looked directly into my eyes and said, “That is really good book.” She smiled.

“Yes. I have to stop reading now, because I’m liable to cry if I finish it.”

(I’ll confess my eyes were a little bit wet.)

Postprocessing in outdoor photography

In an internal mailing list, a friend sent around these photos. Here is one:

pretty_china_17

The interesting thing was back in February, Mark Jen sent those same shots to me and the graphics design department. I composed a reply, but never posted it. I guess I better do something about that.

Very striking images! How did they take such amazing “postcard” shots? Are they real?

I guess it depends on your definition of real. It’s actually pretty easy to get that postcard look. Here’s an example from a photo I took:

Upper and Lower Yosemite Falls

Upper and Lower Yosemite Falls
Yosemite National Park, California

Nikon D70, Nikkor 18-70mm f/3.5-4.5G DX
UV
1/500sec @ f/9, iso 800, 35mm (52mm)

[A discussion of capture and editing of landscape photos after the jump]Continue reading

Anything long, fast, and cheap?

I received this e-mail today, from a Canon Digital Rebel XT owner:

I shoot pictures mainly for my kids marching band. Which means I’m usually shooting at dusk or night. It also means I’m either in the stands on on the sidelines but still want good close-ups. What is a good (read affordable) lens for shooing long distance in low light?

What he wants is a lens that has the reach, is wide (for night shooting) and is cheap. Image Stabilization isn’t an issue because I’ll assume he’ll be buying a monopod or owns a tripod. He’ll have to push the ISO to get the shutter speed up to 1/60 or better which is what he’ll need to prevent bluring of a moving marching band.

Unfortunately there is no such lens that is both long, fast, and cheap.

[Recommendations after the jump]Continue reading

The Gourmet Cookbook

I was at Costco today to pick up some extra FoodSaver bags. After that I wandered around a little bit and I couldn’t avoid the temptation to pick up a copy of The Gourmet Cookbook ($22.49 at Costco).

This book consists of over 1000 recipes culled from the over 50,000 ones that appeared in the last 60 years of Gourmet magazine, tested and updated.

The book includes a DVD which I haven’t watched. I can’t help but think that if they’re going to pay the extra dollar to bundle a DVD, they might as well as the over 1000 recipes in electronic form (they didn’t). Even if they didn’t include the recipes in MasterCook MXP format, I’d have taken the time to write my own parser, believe me!

[A little about the book after the jump]
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G7 hoopla

Another thing I missed from the photography world is the release of the Canon G7.

Canon Powershot G7 rear view

The spec sheet is very impressive for a compact camera:

  • 10 megapixel 1/2″ sensor
  • 6x zoom (though a slow f/4.8 at max zoom)
  • Image stabilization
  • ISO 1600 with a super-high ISO 3200 scene mode
  • hot shoe for external flash
  • $550 retail

Not on the spec-sheet, but appreciated nonetheless are a nice control layout and an optical viewfinder.

From the its non-budget-but-very-reasonable price, its complex control layout, it’s overpowering spec sheet, and it’s not-exactly-svelte-like size, you’d think this camera would be ideal as a second camera for enthusiasts. But no, because the dang major thing missing is RAW file support. Which many people speculated was to protect entry level dSLR sales.

Now I read today that this is because the high photosite density makes the superfine JPEG indistinguishable from the RAW shot:

Smaller pixels means it’s harder to distinguish the signal from the incoming light from the random electronic noise in the sensor, said Chuck Westfall, Canon’s director of media and customer relations.

“The net result is that even if the G7 offered raw image capture…there would be no discernible improvement in image quality compared to…superfine JPEG mode,” Westfall said.

What a load of bullshit.

[An explanation why, after the jump.]
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