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01-10-2013, 10:41 AM   #1
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Need a 7500mm Lens

Anybody have any leads on a 7500mm lens? It'd be nice if it was F/4 or faster.

TIA.




01-10-2013, 11:07 AM   #2
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SDM or screwdrive?
I have a couple here dusting in my closet.
01-10-2013, 11:31 AM   #3
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Ouch, not even the Q can help you here!
01-10-2013, 11:38 AM   #4
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Zeiss Apo Sonnar T* 1700 mm F4 lens: Digital Photography Review

^Best thing I can think of. Stack some teleconverters, I'm sure it'll suit your needs...

01-10-2013, 11:52 AM   #5
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Equals 9520mm fullframe if used on a Pentax Q, go for it!
01-10-2013, 11:58 AM   #6
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You need a Q. Good luck.
01-10-2013, 12:10 PM   #7
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Canon used to have a 5200 mm canon!
01-10-2013, 12:10 PM   #8
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The Hubble?
Oh,...... its FL is 57 metre f/24

01-10-2013, 12:22 PM   #9
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QuoteOriginally posted by wombat2go Quote
The Hubble?
Oh,...... its FL is 57 metre f/24
Sounds a little slow. I'd hold out for the f/2.8 pro version.
01-10-2013, 12:25 PM   #10
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QuoteOriginally posted by Finn Quote
Sounds a little slow. I'd hold out for the f/2.8 pro version.
It's also got worse AF than the AF 35-70 for the old ME-F
01-10-2013, 01:30 PM   #11
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QuoteOriginally posted by ElJamoquio Quote
Anybody have any leads on a 7500mm lens? It'd be nice if it was F/4 or faster.

TIA.

Lens prices is something like $10 per mm at F4

I hate to think of weight
01-10-2013, 01:41 PM   #12
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I think you can purchase some 5 tonne telescopes that is up to the job. Not very portable.

Last edited by Bob from Aus; 01-10-2013 at 03:35 PM.
01-10-2013, 01:55 PM   #13
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A Q with a FA*600 will give you 600 * 5.5 = 3300 mm f4
01-10-2013, 02:03 PM - 1 Like   #14
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Just pay for a good taxidermist and a studio...
01-10-2013, 02:44 PM   #15
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The included picture was taken at 800mm on a full-frame camera (D600), though it may have been cropped. That's more like 500-550mm on a crop camera. Pentax does make a FA 600mm f4 lens. Availability is something of an issue.

FA* 600/4 ED [IF]
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