Purchasing a Tele Lens?

I have a Vivitar SLR camera. Now I want to purchase a Tele Lens for shooting pictures of Birds and wild animals. Recently I visited Leh and I failed to capture the picture of Wild *** "Locallay calls: RIANG". As per local peoples 'to see the wild assess are the rarest opportunity". Please help.

I do not know what lenses you have, but I suggest the following as standard.
1) Either a 50mm or a 55 mm as the normal lens.
2) Either a 35mm or a 28 mm as a wide angle
3) [optional] Either a 24mm or 20mm or 18mm as a super wide angle.
4) Either a 90mm or a 120 or 135 as your standard telephoto for portraits etc.
5) Either a 300mm or a 500mm for your long telephoto OR something like a 180-500 zoom. This is probably the lens you would need for your bird shooting.

not a bad little film mover, simple and reliable! asuming you use a v3800

you need pentax K-Mount lens

get as big as you can get- prob 200mm up to 350mm, u can also buy a "teleconverter" a 1.4x or 2x they get you closer but you lose light (must also be pentax K-Mount)

go hard

Suggest that you buy a 135 to 500 mm zoom lens if you are considering taking pictures of wild life, you will need a good tripod to stabilize your camera and zoom lens, since even a slight movement when using the zoom at 500 mm will blur your picture. Hope this helps.