Originally posted by elementdtlop i think I'm the only person to say i liked the 50-200. maybe i just got a good copy. i have a da wr version and i think iq wise it looks at the very least on par with the examples you're showing me. the 18-55 as well. i have a DA-L wr kit one. i can agree with only having one lens that sounds really nice but price wise i don't know if it is reasonable enough to justify when you could get the 2 kit lenses cheaper 2nd hand offering similar results that are wr to boot or investing in new 55-300 & used 18-55 for 100$ more.
After 25 years swapping lenses on a film SLR, the convenience of the superzoom was a treat on my first DSLR (K100DS). I got a lot of shots that I would have missed with my old camera from having the wrong lens on. And I was constantly surprised at the image quality. Hence my fondness for the one-lens solution, as an intro to DSLR. For people who don't use telephoto much, the 18-135 might suffice instead - with the benefits of WR, light weight, silent AF and a little better IQ.
You are not the only one to like the 50-200 - just as the 18-55 has plenty of fans too. The 50-200 probably suffers by comparison with the 55-300, which was supplied in DA-L form as the corresponding kit lens with some previous model cameras. As kit lenses go, they seem pretty good - which hasn't been the case with some of the F and FA series consumer zooms.
Originally posted by elementdtlop wr is nice feature to have when you "outgrow" the zooms and move to primes and need something for inclement weather to utilize the wr body. quick shift is nice too with these lenses.
It's a paradox that while the kit zooms now have WR and QS, many of the finest lenses ever made for Pentax (e.g. the FA Ltds) don't have either feature.
Not many third-party lenses for Pentax have autofocus with manual override. Nor did any of the Pentax lenses (zoom or prime) before the DA and DFA series (even the * ones and Limiteds). And some of the DA series primes don't have QS (e.g. DA 35 f2.4 and DA 50 f1.8).
As for WR, very few primes have it: DFAs, DA* primes (55, 200, 300) and the 560. And that's about it at present AFAIK.
QS and WR are nice features to have, but to insist on both would mean passing up a lot of great lenses.
Originally posted by elementdtlop i guess i have a bad taste in my mouth with tamron zooms after using an older 70-300. it fringed horribly and the iq was pitiful. it does look like that model isn't bad at all ill admit but it seems to be more the exception to the rule when it comes to super zooms.
The Tamron 70-300 is colloquially known as the Purple Monster for its fringing. (The Sigma 70-300 seems to be better, and a reasonable cheap alternative to the Pentax 55-300.) I haven't used another Tamron zoom but many people like the Tamron 17-50, 28-75 and 70-200, provided you get a good copy. I think it's a pity Tamron aren't selling their newer lenses in K-mount.
There are other decent superzooms. Obviously the Pentax-badged versions of the Tamron-designed 18-250 and 18-270, and the most recent Sigma 18-250 also gets pretty good reviews.
The main thing with a superzoom is to accept its limitations and work within them. Avoid the extremes if possible. Use them for outdoors or with flash, so you can stop down wherever practicable. Shoot RAW and correct any distortion, vignetting and CA in PP. For travel take a compact prime for low light, or when you need higher IQ. If these limitations (which would apply to the kit lenses too) don't match your shooting needs, get suitable lenses that do - like the f2.8 zooms or a kit of primes.