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11-04-2011, 10:32 AM   #16
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I have another lens related question after quickly looking through the used lenses on keh.com:

Would a 'super-wide' rated lens like this 18-35mm from Pentax (Pentax Digital 18-35 F4-5.6 SMC FAJ AL (67) WITH HOOD, CAPS, DIGITAL SLR ZOOM SUPER WIDE ANGLE LENS - KEH.com) offer any benefit or wider perspective than the 18-55mm kit lens? I like playing with the super-wide angle of my GoPro, but want the flexibility of my 'real' camera (you know, a viewfinder, or control over any part of the picture-taking process), and maybe a less severe fisheye-look, but can't seem to find anything affordable with a focal length <18mm. There's also this Tokina 20-35 that's supposedly 'super-wide' (Pentax Autofocus 20-35 F3.5-4.5 TOKINA (72) WITH CAPS 35MM SLR AUTO FOCUS ZOOM SUPER WIDE ANGLE LENS - KEH.com) - is this designation just a carryover from the full-frame focal length being 'super-wide'?

11-04-2011, 10:58 AM   #17
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QuoteOriginally posted by alstauffer Quote
I'm about to buy a Pentax K-r or K-x, and have been thinking about going body only, because I can find better deals, and buying lenses separately. That said, I'm wondering if any of the affordable (less than around $160) Sigma lenses on this site are worth the money?
I stay away from Stigma lenses on general principles. Personally, I think if you aren't going to use Pentax glass, there isn't a whole lot of reason to buy a Pentax camera body.
11-04-2011, 12:16 PM   #18
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QuoteOriginally posted by alstauffer Quote
I have another lens related question after quickly looking through the used lenses on keh.com:

Would a 'super-wide' rated lens like this 18-35mm from Pentax (Pentax Digital 18-35 F4-5.6 SMC FAJ AL (67) WITH HOOD, CAPS, DIGITAL SLR ZOOM SUPER WIDE ANGLE LENS - KEH.com) offer any benefit or wider perspective than the 18-55mm kit lens? I like playing with the super-wide angle of my GoPro, but want the flexibility of my 'real' camera (you know, a viewfinder, or control over any part of the picture-taking process), and maybe a less severe fisheye-look, but can't seem to find anything affordable with a focal length <18mm. There's also this Tokina 20-35 that's supposedly 'super-wide' (Pentax Autofocus 20-35 F3.5-4.5 TOKINA (72) WITH CAPS 35MM SLR AUTO FOCUS ZOOM SUPER WIDE ANGLE LENS - KEH.com) - is this designation just a carryover from the full-frame focal length being 'super-wide'?
Yes, carry-over from full-frame. 'super-wide' 18mm on a cropped sensor is not. So if you want real super-wide, you will need to look at Pentax 12-24, Sigma/Tamron 10-20/24 or a prime in the range 15mm or less. But these are all pricy. Perhaps best for price and still a very good lens is a second-hand Sigma 10-20.

An idea for macro if you buy a manual 50mm, is to buy some cheap extension tubes (total about 50mm). Works a treat..
11-04-2011, 12:42 PM   #19
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As far as keh.com - wow! What a site! It's pretty overwhelming to browse, since there are so many choices, but the prices are definitely right for the most part. I'm having trouble figuring out what lenses will autofocus on my camera, though. I found this chart that covers Pentax lenses (The Pentax Camera Lens Compatibility Chart) but how do I know what Sigma/Tamron/Vivitar/etc. will mount and autofocus when looking at keh.com? Will the Vivitar 100-400 mentioned above autofocus, and is that a recommended/quality lens in general, or was it just recommended because of the 'reach' I need?

Son, please grab the Vivitar 100-400, believe me, had I been in the US right now I would have. It WILL fit and auto focus on all Pentax DSLRs. If it will NOT KEH WILL take it back. Phone them to gain confidence. The Vivitar Series 1 are a class apart - like Pentax star lenses. And their EX+ rating means it will be a spotless clean lens.

11-04-2011, 01:02 PM   #20
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QuoteOriginally posted by nanhi Quote
Son, please grab the Vivitar 100-400, believe me, had I been in the US right now I would have. It WILL fit and auto focus on all Pentax DSLRs. If it will NOT KEH WILL take it back. Phone them to gain confidence. The Vivitar Series 1 are a class apart - like Pentax star lenses. And their EX+ rating means it will be a spotless clean lens.
Vivitar Series 1 lenses used to be better than normal Vivitar lenses - in the 1980's. But now the only difference between a VS1 and a Cosina/Promaster/Bower/Rokinon is the cosmetics. Current VS1 lenses are made by Samyang. The 100-400mm lens was made by Cosina in the late 1990's. At $165 it is way overpriced. I wouldn't pay any more than $80-90 for it. It's a push-pull zoom and suffers from zoom creep. It is also very long at 400mm and at f/6.7 is rather slow.

Vivitar Series 1 100-400mm f 4.5-6.7 Lens Reviews - Vivitar Lenses - Pentax Lens Review Database

Cosina (Phoenix, Vivitar, Promaster, Voightlander 100-400mm, f:4.5-6.7, AF Lens Reviews - Cosina Lenses - Pentax Lens Review Database

The K-r w/ 55-300 kit is the best deal in photography right now.

Last edited by boriscleto; 11-04-2011 at 01:45 PM.
11-04-2011, 09:00 PM   #21
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QuoteOriginally posted by Wheatfield Quote
Personally, I think if you aren't going to use Pentax glass, there isn't a whole lot of reason to buy a Pentax camera body.
Someday I may shoot with Pentax glass, but I just started grad school and am just a hobby shooter, so my budget is quite small. I can't afford to buy a Pentax lens for everything I want to try with the camera, so I was hoping to pick up some things cheap, to last a year or so while I'm in school and while I experiment and see which lenses/focal lengths I end up using the most, so I see where my money will be best spent. I liked the K-x body, its features and its price, though, and there is a huge increase in available affordable lenses compared to my previous camera, so it still made sense to me..

QuoteOriginally posted by KevinR Quote
Yes, carry-over from full-frame. 'super-wide' 18mm on a cropped sensor is not.

An idea for macro if you buy a manual 50mm, is to buy some cheap extension tubes (total about 50mm). Works a treat..
Ah, glad I asked before purchasing, that would have been a waste - thank you! I'll have to give the extension tubes a shot, too.

QuoteOriginally posted by nanhi Quote
Son, please grab the Vivitar 100-400, believe me, had I been in the US right now I would have. It WILL fit and auto focus on all Pentax DSLRs. If it will NOT KEH WILL take it back. Phone them to gain confidence. The Vivitar Series 1 are a class apart - like Pentax star lenses. And their EX+ rating means it will be a spotless clean lens.
QuoteOriginally posted by boriscleto Quote
Vivitar Series 1 lenses used to be better than normal Vivitar lenses - in the 1980's. But now the only difference between a VS1 and a Cosina/Promaster/Bower/Rokinon is the cosmetics.
^Thank you both for your input on the Vivitar. After reading the reviews and seeing the sample images I believe I'll wait on that lens for now - I have a month or two before my next motorsports event, so I should be alright without a ton of 'reach' right away - I may focus on finding a decent flash with what's left and free from this months paycheck. :-)
11-04-2011, 11:29 PM   #22
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Get the Sigma 50-200mm. It is a terrific low-cost lens, and it blows away the Pentax 50-200. My Sigma was destroyed by immersion, but I got some fantastic shots from it before that point.
11-05-2011, 08:50 AM   #23
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Hi son, last Sunday I bought a Sigma AF 100-300 f4.5-6.7 DL lens for $ 48 from an Australian computer engineer. The lens is in like new condition. I saw one in KEH for some $52. Have attached a few quick test shots from this lens - reduced from 10 MB. I think it is a decent lens for the money. Very small and light 99 mm lg x 70 mm dia x 410 gm, 13 elements in 10 group x 8 blades. Can be hand held on the camera. I am trying my hand at nature photography.


Last edited by nanhi; 11-19-2012 at 08:31 AM.
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