How to shoot a blurred background with Panasonic LX5?

First of all, Panasonic LX5 is a very good machine. It has a large aperture of F2.0, which will help to blur the background.

Second, the background blur: As long as you pay attention to the following points, any camera can blur the background, but the results are different, some are obvious and some are not obvious, and some are round and stiff.

1. the most important thing is to adjust the aperture to the maximum, that is, the minimum value of F.

2. Adjust the focal length to the farthest, in order to make the lens extend the longest.

3. Get as close as possible to the subject (you can turn on the macro function of the camera if necessary).

4. Make the background of the theme as broad as possible.

As long as you follow these four points, even a mobile phone with autofocus function can take a blurred effect.

I don't know what you mean by shortening the focal length, but I'm sure the imaging quality of the camera lens will deteriorate at both ends of the focal length, especially at the telephoto end. The best imaging quality is when the focal length is adjusted to the middle wide angle. For example, the focal length is 24-70, then 35mm is estimated to be the best focal length for this lens. But your camera uses Lycra lens, and the quality is quite good. You can use it with confidence, even if the image quality has shrunk, it is very small.