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Photographer's Note

I never thought that heat haze could blur my photos in winter conditions. And yet that's exactly what happens here. On clear March days temperature difference between night and day is easily over 20 degrees. Sunshine warms snow close to 0 degrees while the air a couple of metres higher is significantly colder. And as there was no wind air didn't mix so easily, creating good conditions for heat haze.

This is how Wikipedia describes heat haze: Convection causes the temperature of the air to vary, and the variation between the hot air at the surface of the road and the denser cool air above it creates a gradient in the refractive index of the air. This produces a blurred shimmering effect which affects the ability to resolve objects, the effect being increased when the image is magnified through a telescope or telephoto lens.

View is on Näsijärvi lake towards Siilinkari beacon, cropped from 300mm shot.

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Additional Photos by Kari Tanskanen (ktanska) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3318 W: 54 N: 3855] (24408)
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