From the pictures posted, your dog doesn't look severely overweight, but may be able to lose a few pounds to be at top condition. The best picture to judge weight is taken from above the dog. I don't have a standard poodle, but I have an alaskan husky who stands 24". She has a very thin athletic body and weighs 46 lbs with ribs easily felt and hips visible.
Dakota: GSD/Lab 9 years old
Ditto: GSD 5 years old
Daisy: Alaskan Husky 4 years old
Weegee:Toy Poodle 2 year old
Bandit: Parakeet 11 years old