Originally posted by RonMexico Trying to decide between the Pentax 50-135 or the Tamron 70-200.
They're not priced that far apart and I wanted to see what you guys thought.
Maybe some of you have shot with both.
Thanks
It's a good question... I have both, and I'll give you my thoughts on the matter, but I'll say up front that if I could only keep one (wouldn't rule that out if the economy keeps on
) I'd keep the Tamron in a heartbeat and say bye bye to the DA*.
I primarily shoot landscapes and outdoor scenes (actually I primarily shoot snaps of my one year old boy toddling around) and for me the three real advantages to the DA* 50-135 for me are weather sealing, size, and SDM focusing, and the only one I really care about is wx. sealing.
The wx. sealing speaks for it's self if you are going to be in wet conditions, but with the Tamron being internal zoom and internal focus, I wouldn't worry too much about using it in light rain, mist, or snow (just uncovering it to shoot and then covering it again).
The size of the two is markedly different (check out
this comparison by jsherman999). The Tamron (even with it's hood off) is an imposing cannon of a lens and tends to make people a bit nervous if pointed at them from close range. However if you have the room to maneuver, you can overcome this by using the 200mm end to shoot from farther away, they'll never know you're there. The *50-135 is less imposing (especially with the hood off).
SDM is nice because it's so quiet, people don't look up when you're sniping them (ok I guess "taking candid shots" is nicer than sniping), but I find that my Tamron focuses faster and locks focus much better than the 50-135. Another nice thing about SDM is the quick-shift focusing functionality which I do miss when I use the Tamron (of course the Sigma 70-200 features this and is another option).
Sharpness between my two lenses is comparable... maybe a slight edge to the Pentax at f/2.8, but both razors by f/3.5. Both have great color, and contrast (again the Tamron needs about f/3.5 to achieve it's full contrast potential), and I prefer the bokeh of the Tamron. The Pentax also doesn't focus close enough for my taste/style with a minimum focusing distance of 1 meter giving a magnification of 1:5.8, whereas the Tamron will focus to .95 meter, but at 200mm focal length gives a magnification of 1:3.1 (numbers from B&H specs.) Pentax always wins at flare control (in my experience), and this holds true with these lenses too, but the Tamron does a decent job of this.
The biggest difference for me though is the focal length range... For chasing my son around the yard, the 70mm minimum on the Tamron means I have to spend a lot of time getting farther away so I can fit him in frame whereas the 50mm end of the Pentax allows for closer shooting. Conversely, on a hike in the woods, I'll often want the reach that the 200mm will give me.
So to sum up... For me the Pentax really is a portrait lens which I'll also use outdoors in wet wx., whereas the Tamron is my go-to medium tele-zoom for landscapes and sports (if I ever were to shoot sports - which I don't as of yet). In my opinion, if the Tamron had HSM/SDM and pentax SMC coatings it could be rebadged as a the DA*70-200 and we could forget about that vaporware Pentax version which is due out any time.
Now, here's a scene with each lens to show why I prefer the 200mm potential for landscapes...
With the DA*50-135...
With the Tamron 70-200/2.8
Could I crop the first to achieve the second? For the screen yes, but for a 36x24 print (an extreme example I know), I doubt it would look as good.