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04-21-2010, 11:53 AM   #1
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Of these two zooms, which one???

They are the same price, and there is nothing in the lens review thing about either one so I'm hoping some of you have used these lenses and offer me some guidance.

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices

Pentax Sigma 60-200mm f4-5.6 Lens Manual Focus KA PK-A - eBay (item 200460501715 end time May-11-10 17:36:09 PDT)


Thanks a ton!

04-21-2010, 12:18 PM   #2
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As far as I know, the Vivitar is a bit sharper, but I have never heard of that Pentax before, so I have no idea how sharp it is. They're both pretty ancient though, that's for sure. I would go with the Vivitar though since I've heard some good things about it before and the 70-210mm range is one of the best telephoto ranges.
04-21-2010, 12:26 PM   #3
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Neither

Please check PM. Thanks.
04-21-2010, 01:47 PM   #4
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QuoteOriginally posted by SOldBear Quote
Neither
That's my vote too. The Vivitar is not one of the Series 1 models with a good reputation. It appears to be an ordinary model made by Cosina. I wouldn't expect much out of the Sigma either. If you really want a KA mount ~70-200 lens, for a little more get the SMC Pentax-A 70-210mm f4.

04-21-2010, 02:08 PM   #5
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I think Dave is very right: go for a Pentax SMC-A 70-210/4, which is a very good lens, offers some "macro" capability and can be found not much more expensive (sometimes even cheaper) at ebay. That would be a lens, worth a couple of weeks, until you find one at the right price and you will be very happy for a long time with it.

Ben
04-22-2010, 09:08 AM   #6
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Pentax F 70-210 4-5.6 Lens / Rated 9-9+ / No marks - eBay (item 170475514914 end time Apr-27-10 03:58:12 PDT)

I'm highly skeptical about the plastic construction here..this is a Takumar.

Thoughts?
04-22-2010, 09:27 AM   #7
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QuoteOriginally posted by Raptorman Quote
Pentax F 70-210 4-5.6 Lens / Rated 9-9+ / No marks - eBay (item 170475514914 end time Apr-27-10 03:58:12 PDT)

I'm highly skeptical about the plastic construction here..this is a Takumar.

Thoughts?
The Takumar-F is the same as the Pentax F but lacks SMC coating. Takumar became the bargain brand in the early '80s. The seller should have it listed as a Takumar.
04-22-2010, 09:29 AM   #8
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Every so often I pretend to be a confused buyer and ask those sellers why their auction title says "Pentax F" and the lens says "Takumar-F". This one is not even a 70-210, which might be related to a good lens, it's a 70-200. It's another lens to avoid.

In a remarkable case of brand dilution, the lens that looks almost identical to this, the one the seller hopes you will confuse it with, is really pretty good. It must be labeled SMC Pentax 70-210 to be the good one. Construction is identical, a plastic shell over metal lens barrels. It's heavier than it looks. The AF is somewhat harsh and manual focus has a tiny ring and no feel. Optical performance is excellent. You should be able to find one for $125-150.

04-22-2010, 09:37 AM   #9
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Thanks!

Can someone give me a list of good lenses that have the SMC coatings or equivalent?


As long as theres metal underneath the plastic I'm open to plastic lenses too
04-22-2010, 10:43 AM   #10
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Every screw mount Takumar that says Super-Multi-Coated or SMC is coated. The Super-Takumars have an early form of coating and the Auto-Takumars are uncoated.

Every K-Mount Pentax has SMC coating.
Every K-Mount Takumar is not coated.

The only all plastic lenses from Pentax are the FA J and DA L series afaik.
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