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07-04-2013, 11:17 AM   #1
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long range lens

I see that there is a long range lens by Opteka a 650-1300 for my K-x. I was wondering if anyone knows anything about this company or it's lenses.

07-04-2013, 11:23 AM   #2
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More info is found here:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/103458-vivitar...zoom-lens.html

It's essentially a 650mm F8 lens w/o a 2x teleconverter. Not the sharpest tool in the shed, but if you've got a sturdy tripod and a lot of time on your hands, you should be able to get some good pics with it

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07-04-2013, 12:15 PM   #3
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I suggest you try a 300mm lens first, because 650 is pretty extreme. And hard to use. But good luck if you choose to buy it. Be sure to post some photos
07-04-2013, 12:54 PM   #4
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The Swedish store Cyberphoto are very honest in their reviews even though they sell the items they criticize. Citations from their review:
"No, this is nothing that we can recomment to you if you like sharp pictures."
"But as it doesn't cost much, is it worth the price? No way, there are significantly sharper, better and more userfriendly telezooms available at lower prices."
"We want to warn sensitive viewers to view the test images at 100%, it can hurt your eyes. Don't rub the too hard, it's not your eyes that are faulty."

07-04-2013, 01:23 PM   #5
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It's a cheap 650-1300 f/8-16.
It is a piece of sh*t in every respect.
End of story.

Try finding old 100-500 zooms (search the lens database here). I can guarantee they will provide better IQ.

An interesting and puzzling point though: The 650-1300 seems to improve somewhat when paired with a certain teleconverter.
07-04-2013, 03:03 PM   #6
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QuoteOriginally posted by Giklab Quote
It's a cheap 650-1300 f/8-16.
It is a piece of sh*t in every respect.
End of story.

Try finding old 100-500 zooms (search the lens database here). I can guarantee they will provide better IQ.

An interesting and puzzling point though: The 650-1300 seems to improve somewhat when paired with a certain teleconverter.
+1

I have a tamron adaptal 200-500/5.6. Much better optically cost only $350 but I think I got a really good deal
07-07-2013, 10:15 PM   #7
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Thanks for all the responses on the lens. Were are headed to Alaska , driving the Alaskan hwy through Canada. I have up to 300 covered on the lens. Was thinking on a window mount for the longer lens. I do have tripods. Leaving around the 20th of July.
07-07-2013, 10:25 PM   #8
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Checking Flickr I don't see a lot of great shots. Flickr Search: opteka 1300

Perhaps a Q +adapter combined with your existing lenses would be an option for a window mount solution.

Does take a bit of practice and experimenting. See the threads https://www.pentaxforums.com/forums/pentax-q/173602-reach-q-images.html and https://www.pentaxforums.com/forums/pentax-q/209474-adapted-lenses-tested-q-r...ce-thread.html

07-08-2013, 10:14 AM   #9
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Q+

Thank you for info. I don't know what a Q+ is.. If it's a double converter like a 2X converter I didn't think they worked on auto focus lens. I have a Kx with 18-55 & 55-300 auto focus lens. Still learning the camera.
07-08-2013, 11:05 AM   #10
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QuoteOriginally posted by elf photo Quote
Thank you for info. I don't know what a Q+ is..
Sorry, a Pentax Q is a small camera that will take an adapter to mount your existing K lenses.
If you are just learning your camera it is probably best to stick with it instead of messing with another one, so scratch my suggestion.
Keep at it.
The 55-300 paired with your K-x should give nice results, and they will stand up to cropping.
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