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View Full Version : tamron 18-250 on K10?



pict
11-15-2006, 05:01 PM
I've had a sony 707 for a few years and have decided to upgrade. I like the all in one versatility (and also like not having to worry about dust on the sensor with changing lenses) but really want the larger size sensor that the dslr's have. Only sony and pentax offer dslr's with anti-shake. Sony has a kit including an 18-200 for $1200 which sounds good to me. But from what I hear, the pentax may be better built (ie: "weather proofed"). But pentax has nothing like the 18-200 lens. So, will the pentax anti-shake still work if I put the tamron lens on it?
Thanks for any imput on this.

timmciglobal
11-15-2006, 06:44 PM
Your FAR better off buying kit lens and 50-200 pentax.

Tim

jeisner
11-15-2006, 08:19 PM
Your FAR better off buying kit lens and 50-200 pentax.

Tim

Agreed the super zooms are not fantastic quality...

BTW if you really want it the Sony 18-200 is in fact the Tamron 18-200 so you can get the same lens for Pentax (ie Tamron 18-200 in pentax mount)..

pas49ras
11-16-2006, 04:30 AM
So, will the pentax anti-shake still work if I put the tamron lens on it?
Thanks for any imput on this.

And yes..the anti-shake is built into the body of the Pentax, so it will work with the Tamron lens.

pict
11-19-2006, 05:24 AM
Thanks for the input. I Knew I'd be sacrificing some quality with a super zoom compared to 2 different lens. But I also figure that even with a 18-200 I'd get better pix from the K10 than I'd get with any of the non SLR all-in-one's with the much smaller sensors. True?
Also, If I went with an 18-135 (like the new nikon lens) would that offer me appreciably better quality pix than an 18-200?

jeisner
11-19-2006, 01:05 PM
Thanks for the input. I Knew I'd be sacrificing some quality with a super zoom compared to 2 different lens. But I also figure that even with a 18-200 I'd get better pix from the K10 than I'd get with any of the non SLR all-in-one's with the much smaller sensors. True?
Also, If I went with an 18-135 (like the new nikon lens) would that offer me appreciably better quality pix than an 18-200?

Sigma 18-125 is better quality (both resolution and distortion) than the 18-200.

timmciglobal
11-19-2006, 04:56 PM
Not true.

Sensor size is only an issue in terms of ISO noise not in terms of optical quality.

The lens on the panasonic FZ-50 is superior to the 18-200 tamron in many ways.

Tim

jabilson007
11-21-2006, 03:05 PM
I recently purchase the Tamron 18-200 to use with my ist DL. I did one test of shooting a brick wall at 1/60 F8 50mm at about 3' with a 50mm 1.7, 18-55mm(kit) and the Tamron. Very similar sharpness. The kit had a little more contrast and saturation. AF speed is also a draw(realizing the zoom ranges of the lens). I am thinking of selling the 50mm and the 18-55mm because the quality is comparable to me and I like the simplicity of only one lens. I can get closer for macro type shots with the kit, however.

timmciglobal
11-21-2006, 04:31 PM
Try same test @ 200 where the 18-200 is weakest.

Tim

jabilson007
11-21-2006, 06:21 PM
Try same test @ 200 where the 18-200 is weakest.

Tim

Unfortunately, the 50mm and the 18-55mm don't have a 200mm setting.;)

jeisner
11-22-2006, 03:26 PM
Unfortunately, the 50mm and the 18-55mm don't have a 200mm setting.;)

I think he meant to compare to the Pentax DA 50-200... would be interesting to see...

Reps
11-23-2006, 02:28 PM
... @200 mm. But with different cameras- Tamron was on EOS 350D. What can I say:
1. DA was far superior on every 1/f- sharpness, exposure etc.- plus a very handy QuickShift feature (like USMs have)
2. Color rendition was rather different (but different cams...)
3. DA double combo price vs. Tamron- at least here the dual combo is 1/3 cheaper...
4. Weight of single lens (225+260 vs. 400)- no big difference to carry around
5. Overall my decision was to stick to dual combo for this range (OK plus primes+macro etc.)

Best and I know that this was not so much helpful but something at least..., JR