My F700 34L has a stuck telephoto lens. No physical shock , just pressed the buttons in a random way.

press the view or display button. t switch over from recording to viewing. Then try pressing the display button several times.

batteries might need charging or try new batteries.

Did you try putting the camera and lens in Manual Mode and focusing by hand? On Many cameras there is a tiny switch on the lens that limits your focus ability to either FULL or LIMIT.

The most likely cause for this is a zoom lens out of place or impaired in some way. This will require disassembling the camera to remove the lens assembly and then disassembling the lens block to repair. This can be done fairly inexpensively but it's not really a user serviceable problem and should be repaired by a qualified service technician.

My name is Rick and I'm a professional repair technician with over 20 years in the business and have repaired many of these. I'm semi retired and work from home with little overhead so I can keep repair costs low. If you decide to have the camera repaired, please click HERE for a directory listing that suits your needs.

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You just need any Minolta AF mount lens. Sony Alpha lenses also physically fit as Sony inherited the Minolta lens mount when they bought the company, but as they are a later development not all will be electronically compatible.

The size of the lens depends upon the focal length of the lens and you choose that according to how wide a field of view you desire. Typical lenses are 28 and 35mm wide angles, 50mm "standard" (approximately the same perspective of how the human eyeball sees images), 70 to 90mm short telephoto lenses (a narrower perspective and very good for portraits) and higher numbers are narrower perspective telephoto lenses for viewing increasingly distant objects. In practice, the available lenses will be incorporated into zoom lenses which incorporate a seamless range of focal lengths within one single model. The word "zoom" reflects the fact that you can seamlessly change from say 28mm wide angle through to 80mm short telephoto and every single setting between them

Any zoom which starts at less than 50mm and finishes in the short telephoto range is called a standard zoom and is the lens that most autofocus cameras were supplied with. The next most common size will be something like a 70-200mm which is a telephoto zoom (or tele zoom) and takes you from a portrait lens to a genuine 5x magnification telephoto. You may also find so-called "super zooms" which do the whole job on one, for example 28-200mm. but the more jobs a single lens tries to do, the bigger and bulkier it becomes and the image quality deteriorates due to poorer contrast and greater image distortion at each end of the zoom range.

This is not an exhaustive answer, as there are entire books on the subject, but hopefully it's been of help to you.

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First clean the electric contact points of the lens and the camera body.

HI I need to no what fit the lens is

Make sure the AF/MF mode button on the lens is set to AF.
What focusing mode do you have selected in the camera? Single Shot, AI focus or AI Servo? 
If Custom Function "C.Fn IV -1 Shutter button/AF-ON button" is set to option 2 or 3, the AF will start when you press the AF-ON button.
I hope this help you!
/Chris

The following blog outlines some repair options for a lens error:

http://camerarepair.blogspot.com/2007/12/fixing-lens-error-on-digital-camera.html

It will not work because it is the wrong thread size. Here is info on the Olympus TCON-17 lens for the 5050: TCON-17 (1.7X) Telephoto Conversion Lens Extend the capabilities of your digital camera with the TCON-17 Telephoto Converter lens. This telephoto lens will increase the magnification of your subject by 1.7x when your camera lens is set to the telephoto position. This will help you bring in the subject when you can't get closer, for example, shooting sports or concerts. Please see below for additional items required to attach this lens to your camera. The following models require the CLA-1 and 43-55mm Step-Up Ring: C-2000/2020/2040/3000/3020/3030/3040/4000/4040/5050 Zoom ....... The video lens is too small (diameter). If you found one with a 43mm thread and put it on the 5050, you would experience severe vignetting (clipping of the corners of the photo).