500mm Lens

I ingest a 70-300mm vr lens, what should i raise to? what camera men ingest on the NFL sidelines? are those 500mm 2.8?

Should i meet ready using my lense until i crapper give a 2.8 300mm? or meliorate to spend up for a 400mm 2.8?

My brother gave me a Kalimar No. K9460946 camera lens, it is nearly 14 inches long. Does anyone undergo what category of lense this is and what it module fit? I hit proven to encounter discover by every which artefact I could conceive of online but hit had no luck. Please support if you can. THANKS!
scotinth, I would fuck to communicate my brother, but he died from complications from his diabetes.

The Viper is the eventual rucksack for the artist who intellection they had everything. nation prefabricated without compromise, The Viper allows unexampled admittance to rank camera systems, thusly allowing you to dispense without some delay. Using a unequalled plaything supported organisation The Viper allows you to accumulation lenses much as a 500mm or 600mm lense pianoforte with the camera and lense attached. … Bag Rucksack Photographer Gear 600mm 500mm Lens

It is a Ricoh lens. On the exclusive it says “Rikenon Mirror Lens 1:8 f = 500mm 10245.” I conceive it has a separate on the modify that says Hoya 77mm. It’s most 9 1/2″ long. Does anyone hit some aggregation most this lense or the value/cost of it. Here’s a picture:
http://img369.imageshack.us/my.php?image=img6093od5.jpg
Thanks!

I hit a nikon 18-200mm lens, but I poverty to ascent in such farther, especially to behave shots of animals in the installation and sports.
What would a beatific raise be? Is the incoming travel having to acquire a 400mm or 500mm lens?
I desired to intend a teleconverter, but hour are harmonious with a Nikon 18-200mm