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05-10-2011, 03:03 AM   #1
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tamron and tamron adaptall

Tamron AF 70-300mm F/4-5.6 Di LD MACRO 1:2 Lens VS
Tamron Adaptall-2 SP 60-300mm f/3.8-5.4 (23A)

Can somebody suggest, leaving alone the price point, which one is optically good.

I also have an other one to compare:
Pentax-DA 50-200mm F4-5.6 ED WR
vs
Tamron Adaptall-2 70-210mm Macro f/4-5.6 (58A)

Also in general, is it worth to go for tamron adaptall or tamron series? Although I can see reviews of these lenses, I just thought of getting opinions comparing from the experienced in helping me decide.

05-10-2011, 03:28 AM   #2
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I have used both the 70-300 and the Adaptall-2 60-300. I found the 60-300 to be sharper but also more prone to purple fringing in high contrast situations. Mechanically there is no comparison. The 60-300 is very well constructed and solid as a rock, while the 70-300 is very plasticy. On the other hand, the 70-300 is lighter and more compact, while the 60-300 is long, heavy, and a little awkward.

I have and use the five Adaptall-2 lenses in my signature and have also used the 200-500/5.6, 35-210, and 90/2.5 macro. They range from very good to outstanding. You can see some purple fringing with these older lenses, but avoid high contrast scenes wide open. This minor niggle is more than made up for by their sharpness and incredible build quality. I think they are outstanding.

- Mike
05-10-2011, 11:45 AM   #3
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Hi sany,

IMO, the A2 60-300 is better optically than the AF versions (and there have been quite a few).

Can't comment specifically on either of the shorter zooms, but I do have an older DA50-200 and it's a very good lens in this range. It's extremely small and light, and among the top lenses in this class optically. Of course, the WR adds a whole different dimension.

If MF is not an issue, and considering price as a factor, I'd suggest you look at the Pentax A 70-210 f4 as possibly the best bang for the buck in a lens in this range. They are usually abundantly available and under $100 USD in the used market. A lot of people seem to complain that it's heavy, but with a constant f4 max aperture and metal construction, what would one really expect?

Another good one optically is the Pentax F 70-210 f4-5.6. It's also a bit heavy (especially compared to the DA 50-200), but it's worth a look if you want good optics. There are also apparently a Takumar version of this lens out there, and from what I've heard, it has the same optical formula, and though does not have SMC coatings, it is reported to be a good performer by owners.

There are a whole lot of very mediocre lenses in the 70-200ish zoom range, so it's a good idea to narrow things down to the picks of the litter. . .

Scott
05-10-2011, 11:59 AM   #4
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thank u

05-10-2011, 01:32 PM   #5
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QuoteOriginally posted by snostorm Quote
... I'd suggest you look at the Pentax A 70-210 f4 as possibly the best bang for the buck in a lens in this range. .....
Another good one optically is the Pentax F 70-210 f4-5.6. ...
Scott
Hi Scott

Can you tell me what I will be missing in these two lenses that Tamron AF 70-300mm F/4-5.6 Di LD MACRO 1:2 Lens and 50-200WR does please. Can they all handle metering, auto modes etc.,


thanks
05-10-2011, 09:58 PM   #6
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I have the SMC Pentax-F 70-210mm f4-5.6 and I think it's a pretty good lens. Sharpness is excellent wide open, the lens is not that big, focus is quick, and it's fully compatible with a Pentax DSLR. Kind of heavy, though, and maximum magnification isn't as good as the Tamron (only 1:4). I would be very interested to compare it to a DA 50-200mm f4-5.6 WR. The DA lens is half the weight. It also has information to allow automatic distortion correction and CA removal with newer DSLRs.

The SMC Pentax-A 70-210mm f4 is bigger and heavier than the F version, but feels like it's built better. It's manual focus. It can tell the camera what its aperture is (the A setting). It won't tell the camera its focal length, name or any correction information. The focal length info can be set manually but you either have to use one compromise number or reset it every time you zoom. I haven't used it because mine is really broken, but its reputation is great.
05-11-2011, 02:38 AM   #7
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If there is no restriction with a budget, do you all think going for Pentax-DA 50-200mm F4-5.6 ED WR would be a better decision over Tamron AF 70-300mm F/4-5.6 Di LD MACRO 1:2 Lens and SMC Pentax-F 70-210mm f4-5.6.
Also I am seeing, Adaptall-2 SP 70-210 f/3.5 (19AH) gets good rating than the 50-200 WR for $80 more. Please advice in terms of optical quality in my decision making. I guess I am close to finding my lens.


05-11-2011, 03:16 AM   #8
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Why not consider SMC Pentax-DA 55-300mm F4-5.8 ED Reviews - Pentax Lens Reviews & Pentax Lens Database
It is generally highly regarded in this range and price category.

P.S. The DAL version is cheaper.

05-11-2011, 07:53 AM   #9
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is that a kit lens?

my other question was really going to be - how to identify from the number that it is a kit lens? which I want to stay away from (no offence)
05-13-2011, 11:10 AM   #10
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You have a K-r body which is not WR, so getting lenses that are WR doesn't make a whole lot of sense. Tamron 19AH is the best of the lot (optically and build wise) of all of the lenses that have been mentioned in this thread, but it's a manual focus lens and is heavy. It's a challenging lens to shoot with but if you can master the manual focusing this lens, the return will be great IQ and colour rendering across the complete zoom range. Other lenses that have been mentioned in this thread have good or better performance at certain focal lengths and aperture, but can be downright mediocre at other focal lengths.

Thanks,
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