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12-11-2014, 07:07 AM   #1
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long lenses

Hi I am new to the forum and am looking for advice I use a k200 and am interested in getting some wildlife shots, nothing fast moving , eagles roosting seals basking etc . I have wondered and am attracted by the price of a 500 mm catadioptric lens has anyone any experience of them and can you recommend any particular make

12-11-2014, 07:20 AM   #2
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You'll find a few fans here. Search the forum for 500mm mirror lens or just 'mirror lens' and you'll find some threads. Any long lens takes some practice and technique.
12-11-2014, 07:33 AM   #3
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It's hard to find a decent 500mm lens. The best ones are the Tamron Adaptall SP lenses, which use a mount adapter and thus can be fitted onto any body. The problem with them is they are a constant f8 aperture and that limits where you can use them w/o cranking up the ISO. I used one for shooting some feeder birds recently and even those required ISO at or above 3200. Add a teleconverter and you're shooting at f16.

I wish you MUCH light.
12-11-2014, 08:56 AM   #4
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see also
Mirror Lenses

Vintage mf lenses like the 400mm 6.3's, while rather limited, nevertheless are optically capable (the good ones!) of some decent results and provide a good intro for learning and gaining experience with minimal outlay.
Another way to go: a quality lens like a 70/80-200mm f2.8 will do more than well enough with a 2x tc of equal quality. Bear in mind tc's + an average lens invariably disappoints.

12-12-2014, 02:18 PM   #5
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Welcome to the forum, it's just starting... first comes long lenses and then shorter ones and then the really wide ones, LBA is alive and well.
12-12-2014, 03:54 PM   #6
Des
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Welcome.

Have a look at this thread:
https://www.pentaxforums.com/forums/130-lens-sample-photo-archive/274865-case...3-samples.html
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