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02-17-2013, 07:21 PM   #16
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QuoteOriginally posted by ChipB Quote
Correct.

thanks!!!

02-17-2013, 07:27 PM   #17
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QuoteOriginally posted by disneybride Quote
then I will only lose AF?
Pretty much. I think you should read this post:
https://www.pentaxforums.com/forums/pentax-lens-articles/110657-how-use-meter...k-x-k-7-a.html

You select your 50mm based on your budget - f1.7 is usually the best compromise between performance and cost. Next you decide which series - K, M, A, or F, FA, DA. The K can have collectors value, M is probably cheapest, A is more expensive but has automatic aperture, the FA and DA are still in production and you can get them new (which is good, since you get warranty and don't have to worry about getting an damaged lens). More modern lenses have better coatings (as the SMC was improved over time), but generally the optical design of the 50s hasn't really been dramatically changed since the M series.
Here is another useful link:
http://www.mosphotos.com/PentaxLensesExplained.html
02-17-2013, 07:30 PM   #18
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QuoteOriginally posted by Na Horuk Quote
Pretty much. I think you should read this post:
https://www.pentaxforums.com/forums/pentax-lens-articles/110657-how-use-meter...k-x-k-7-a.html

You select your 50mm based on your budget - f1.7 is usually the best compromise between performance and cost. Next you decide which series - K, M, A, or F, FA, DA. The K can have collectors value, M is probably cheapest, A is more expensive but has automatic aperture, the FA and DA are still in production and you can get them new (which is good, since you get warranty and don't have to worry about getting an damaged lens). More modern lenses have better coatings (as the SMC was improved over time), but generally the optical design of the 50s hasn't really been dramatically changed since the M series.
Here is another useful link:
Pentax K-Mount Lenses Explained: The differences between various Pentax lens series
checking it out now! thanks!
02-17-2013, 07:32 PM   #19
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Oh, and after you buy a lens, buy a good tight hood. (there are many threads on this) (by "tight" I mean effective, some generic hoods seem to be so wide they don't really block much light)
Hoods can really improve IQ of older lenses.

02-17-2013, 07:35 PM   #20
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QuoteOriginally posted by Na Horuk Quote
Oh, and after you buy a lens, buy a good tight hood. (there are many threads on this) (by "tight" I mean effective, some generic hoods seem to be so wide they don't really block much light)
Hoods can really improve IQ of older lenses.

thanks so much!
02-17-2013, 07:35 PM   #21
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https://www.pentaxforums.com/forums/pentax-lens-articles/152336-cheap-macro-b...lose-work.html

You should consider the F35-70. A little slow at f/3.5-4.5 but it is small, sharp and fast focusing. It also has a nice close focusing feature at the long end. Can usually be found very cheap.

https://www.pentaxforums.com/forums/lens-sample-photo-archive/159881-pentax-f...5-samples.html
02-17-2013, 07:37 PM   #22
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QuoteOriginally posted by boriscleto Quote
https://www.pentaxforums.com/forums/pentax-lens-articles/152336-cheap-macro-b...lose-work.html

You should consider the F35-70. A little slow at f/3.5-4.5 but it is small, sharp and fast focusing. It also has a nice close focusing feature at the long end. Can usually be found very cheap.

https://www.pentaxforums.com/forums/lens-sample-photo-archive/159881-pentax-f...5-samples.html

this is the most helpful group of people on the web!

thank you all!!!
02-17-2013, 07:45 PM   #23
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QuoteOriginally posted by ChipB Quote
You might consider an SMC Pentax A 28mm lens instead of the 35mm - a bit more 'separation' from the 50mm. There's quite a few of the 28mm f2.8 A lenses out there - look for a nice clean copy and I think you'll be well pleased.

And, as mentioned above, the SMC Pentax 50mm f2 is actually a very good lens - it just doesn't get the respect it's faster bretheren get.
I agree that a 28mm / 50mm team is quite nice. I've been a fan of Rikenon lenses, all manual but great optics. The coatings are definitely not up to modern standards but with forethought to strong lighting that can produce flare they seldom mess up my images. I really like my Rikenon-P 28mm f/2.8 though with my recent pickup of the SMC-A 24mm it gets little use now. Other Rikenons include the 50/2, 55/2.2 and the XR 70-150mm f/4 with internal zoom, and I owned the 35-135 f/3.5-4.5 before as well. Fun lenses, and often quite the bargains!


Last edited by jimr-pdx; 02-17-2013 at 07:50 PM.
02-17-2013, 09:58 PM   #24
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For an inexpensive Macro, I use a 100mm/3.5 with the "Promaster" name on it (a made in Japan lens, I'm not sure by who). It is a manual focus lens. Normal image magnification is 1:2, but it comes with a close-up lens for 1:1. This is the review found here - Promaster 100mm 1:3.5 MC Macro (Spectrum 7) Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database

The marketplace forum here and KEH.com are good places to look for lenses.

Last edited by eastman; 02-17-2013 at 10:06 PM.
02-17-2013, 10:36 PM   #25
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Don't overlook the Pentax 55mm f1.8
It's a great lens and can be had quite cheaply.
02-18-2013, 05:50 AM   #26
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QuoteOriginally posted by johnyates Quote
Don't overlook the Pentax 55mm f1.8
It's a great lens and can be had quite cheaply.
The SMC Takumar can be had cheaply, but it requires an adapter...

The K55/1.8 has become very overpriced.
02-18-2013, 05:59 AM   #27
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This forum article is a must read if you plan on buying a used lens.

https://www.pentaxforums.com/forums/pentax-lens-articles/59245-pawnshop-lense...ers-guide.html

Tim
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