Common Chaffinch Male

I prioritized my work in the garden and therefore managed to rearrange the bird bath in good time. Just a quick "smoke test" and result is this male chaffinch (peippo) bathing.

I've discovered some problem during the past few months. My hide is rather small and I can't get my head very far from the camera. When I look the images on the display they all look very blurry. But when I upload them into my computer some of them are perfectly sharp. Should I take my camera to the service or what?