Shooting with a 90mm macro lens mounted on a Canon 40D, I experimented with various apertures and camera to subject distances.
Most of the windows had storm panes affixed to the exterior. The ice formed on the inner surface of the storm windows.
On some windows, the screens were in the down position.
Here's a summary of what I learned:
- Vary the aperture to increase or reduce the blur in the foreground (such as screening) and the background (such as leaves and branches). Experiment with different apertures.
- If hand-held, use a shutter speed at least 2x the focal length of the lens to minimize blur
- Keep the focal plane paralled to the window pane. Place the lens shade flat against the window for the extreme closeups.
- Pay attention to changing light