What is the longest focal length lens?
And such a deal at only $12,349 (but free shippingbhowdy wrote: Canon makes an 800mm prime lens
). Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork
Baydream wrote: More info
www.digitalphotographywriter.com/2010/10...n-nikon-longest.html
The Canon 5200mm f/14 doesn't count because it's an FD lens and can't be used anymore.
I still win.
Stealthy Ninja wrote: Pfft you all lose.
Nikon 2000mm
www.mir.com.my/rb/photography/companies/...es/reflex/2000mm.htm
You only win if you've owned it
The longest non-Cassegrain type prime lens I've owned is a 1000mm Pentax SMC Takumar I got from Ebay a while back. Unfortunately I only owned it for a day because it came with a cracked element.
Returned and refunded... 
Yasko wrote:
Stealthy Ninja wrote: Pfft you all lose.
Nikon 2000mm
www.mir.com.my/rb/photography/companies/...es/reflex/2000mm.htm
You only win if you've owned it
The longest non-Cassegrain type prime lens I've owned is a 1000mm Pentax SMC Takumar I got from Ebay a while back. Unfortunately I only owned it for a day because it came with a cracked element.
And if you are going to go with a Cassegrain you might as well get a Schmidt-Cass telescope for one it will be lighter and it costs less per inch of aperture than what the manufactures would sell theirs for. For example an 11 inch f/10 is at 2800mm for $2600. With that you can get a field flattener and focal reducer that will make it an f/6. The only drawback is weight with its tripod at 91 lbs. but you could adapt it to sit on a standard tripod, then it only weighs around 40 lbs.
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