The main difference between lenses with focal lengths of 18-135mm and 55-250mm is their zoom range. The 18-135mm lens has a wider zoom range, allowing for more versatility in capturing different types of shots. On the other hand, the 55-250mm lens has a longer zoom range, which is better for capturing distant subjects.
For general Photography purposes, the 18-135mm lens would be more suitable as it offers a good balance between wide-angle and telephoto capabilities, making it versatile for various shooting situations.