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I was wondering how it is possible to take a picture like this.
Please have a look here for some example pictures. The flower is sharp, and everything else looks like taken with a long shutter.
Is that even possible, or do you think it's Photoshop-edited?
I asked the photographer about the lens, and it's a Minolta RF Rokkor 250mm f5.6.
Looks like it's been shot with a wide aperture (low f number, like f/2.8), from a close distance, with a camera that has a large sensor -- the combined effect is a shallow depth of field, as demonstrated there.
To reproduce, put your camera in aperture priority mode (Av on a lot of cameras) and choose a wide aperture (head for f/2.8 rather than f/22) and get shooting.
You're confusing the blur in the background that's due to having a shallow depth of field with motion blur from a long exposure. The exposure length has pretty much nothing to do with it here.
It's all about the aperture. (And if you want to change your composition, the distance to the subject.)
Depth of field has been covered in great length on the site otherwise, so there's no need to repeat it all - but basically you'll want to get as close to your subject as possible, with the widest aperture (lowest f number) to maximize your subject isolation. Moving back or making your aperture smaller (bigger f number) will make the background more in focus.
If you only have a point and shoot camera with a small sensor, you'll be unlikely to replicate the subject isolation in these photos.
(Also, given the donut shaped bokeh of the first, its possible it was done with a mirror telephoto lens, which have relatively close focus for their focal length, giving them the ability to do some shots like this)
Those photos use a shallow depth-of-field to create a sharp, focused subject and blur the parts of the photo that aren't in the same plane as the subject. Notice in the first photo, the leaves to the left of the flower are also in focus -- these are very nearly the same distance from the lens as the flower, so they're part of that same depth-of-field.
In the second photo, the depth-of-field is shallow (small) enough that the whole flower isn't even in focus -- just part of it is. This technique is used to isolate subjects from backgrounds -- you'll also see it used extensively in portrait photography.
