Greetings! How does the picture quality of c-740 and c-750 cameras compare with other Olympus cameras c-4040 & c-5050 and c-4000 in the 35-100mm zoom range? Are c-740 and c-750 cameras pocketable? Do you need a CLA-1 tube to put UV filter on c-740 and c-750? If the picture qualities are comparable then the extra zoom in 740 and in 750 will be an extra bonus. What is your opinion? [I have a c-4040 for available light photo graphy and D-510 pocketable but no manual control. I really want a pocketable with features of c-4040] With thanks.