Webster Groves Presbyterian Church: window closeup

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Comments (6)

Luis Maderuelo on October 9, 2007

It is very nice, too...

Ryan Calhoun on October 9, 2007

Thanks, Luis. I took this from across the street to test the zoom on my new lens.

eme jota on October 9, 2007

Your lens are the ninth wonder Ryan! (;D)

Ryan Calhoun on October 9, 2007

Thanks, Eme! I'm glad you think so! :-)

Ryan Calhoun on October 10, 2007

Thanks, Bruce. Maybe I'll be back that way sometime, and take a look inside.

Yes, it's a completely optical zoom. My camera is a Cannon Rebel, with a sensor 22.2 x 14.8 mm. So the lens isn't equivalent to one for a 35mm camera. But for my camera, about a 33mm focal length is "natural", anything less is wider, and anything greater is longer. So the 300mm focal length for this shot is just over a 9 times magnification (300/33.33 = 9). Both my lenses have USM (ultra sonic motor) autofocus and IS (image stabilization). For anything over a 50mm focal length, you really need the IS to shoot handheld. But over 150-200mm, it still has to be pretty sunny, even with the IS (the long zoom lets in less light and the shutter speeds get too slow).


Ryan Calhoun on October 10, 2007

Glad to help, Bruce! One thing I like about the longer zoom is I can shoot architecture details like this from farther away to make them look more flat, not always looking up. This shot was handheld, but on a very sunny day. I always keep a tripod in the car, but don't often take it out. The long zoom is also great for birds an animals, but they don't hold still for you. Even if you can keep your hands perfectly steady (or set up a tripod), you can still get motion blurs if they're not in full sunlight. That's at the maximum zoom, of course. Usually, you can back off on the zoom a bit and half the exposure time, and still be plenty tight enough to get the detail you want. Ryan

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Photo details

  • Uploaded on October 8, 2007
  • © All Rights Reserved
    by Ryan Calhoun
    • Camera: Canon EOS DIGITAL REBEL XT
    • Taken on 2007/09/28 15:13:02
    • Exposure: 0.003s (1/320)
    • Focal Length: 300.00mm
    • F/Stop: f/6.300
    • ISO Speed: ISO200
    • Exposure Bias: 0.00 EV
    • No flash