Wednesday, January 7, 2009

More Las Vegas Real Estate

Las Vegas Trailers, originally uploaded by Gamut's Edge.

Here's another photo from my walk around Las Vegas. This storage lot is located walking distance from The Strip.

Tehnical note: When taking photos in bright midday sun it is easy to get tricked by your camera's LCD into underexposing. Under exposed shots look better on the LCD when viewed in a sunny area. If you're bracketing and don't pay attention to the histogram you could easily fool yourself into underexposing a whole series of pictures. I've done that a few times in the past. Now whenever I shoot in the sun I pay close attention to the histogram. For this photo I based my exposure off the white in the trailers. I made sure there was a spike on the right side of the histogram as close to the edge as possible without overexposing. This spike was the white trailers. I took a few bracketed shots over and under just to be sure I got a workable image. And of course, the underexposed frame looked best on my LCD. However, when I got back to my computer and downloaded the photos the image with the whitest yet not blown out trailers looked best.

Why do underexposed photos look best on the camera's LCD? I am not sure but I have a theory. First of all underexposed photos are darker so they are easier to see in bright sun. Secondly, I think the camera actually does a little post processing of its own when it displays the photos. I could b wrong, but I think most cameras set a white point and black point, kind of a rough levels adjustment, to the photos displayed on the LCD. This is used strictly for the LCD display and isn't saved for to the file data. That's why your images always look contrastier on the LCD than they do once they're downloaded. This white point setting adds saturation just like it does in photoshop. That's why the underexposed photo has more saturation. A sharper correction was made to create a white point and black point in the underexposed image. Therefore there is more saturation in the underexposed photo in the LCD display and it still looks good because it has a black point and a white point. You don't notice the image is messed up until you download it onto your computer or take a second to analyze the histogram n camera.

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