[Klaus]

[quote name='thxbb12' timestamp='1299074149' post='6441']

They just didn't release the lens I'm interested in:



* 16-45: not long enough nor WR

* 16-50: a bit too short, soft at f/2.8 and soso up to f/4, plus the lens doesn't focus well on non-contrasty subjects

* 17-70: "only" starts at 17mm and not WR

* 18-55: only 18mm

* 18-135: only 18mm as well



A 16-70 WR (f/2.8-4.5 or constant f/4) would be ideal.



Zeiss made an excellent 18-60 f/3.5-4.5 in Sony mount and Nikon have the 16-85 f/3.5-5.6 (bit slow).

Both of these lenses are very good optically while not breaking the bank.

I believe Pentax could make a good 16-70 WR optically and to me it would be a nice differentatior.



Plus, I don't understand why they don't release more WR lenses. Afterall, they prone themselves for targeting outdoor photographers while they don't seem to release that many WR lenses (limiteds shouldn't be, but 12-24, 17-70 and 55-300 clearly come to mind).

[/quote]



Regarding WR - agreed but it's surely a matter of resources.

As far as the 17-70mm is concerned - they simply wanted to sell more 12-24 or 14/2.8 ;-)

[AlbertoM]

I am very impatient to see the samples of the K5 without the antialias filter <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='' />

[Guest]

[quote name='Klaus' timestamp='1299073346' post='6440']

Well, they have the 17-70mm and it's good. I strongly doubt that they will release another "prosumer" zoom lens.



16-45/4

16-50/2.8

17-70/4

18-55/3.5-5.6

18-135/3.5-5.6



Isn't that enough ? :-)

[/quote]



Sure is enough, but the 16-45mm won't stay. Furthermore, like you concluded the 17-70mm is a fine lens, but my estimate is that it isn't selling. Prolly because it competes head on with the Sigma 17-70mm which is not bad at all either but for a much better price. The 16-70mm would not be an addition, but a replacement for the 17-70mm. I think a 16-70mm F2.8-4.5 or F4 WR would offer both wider angle and WR over the Sigma actually giving people some insentive to buy the Pentax lens instead.



Alternatively a 15-60mm F4 WR would be a nice match for the 60-250mm. See my Pentax lens line up proposal here (was made before the 18-135mm hit the scene):

[url="http://pentaxlensrange.blogspot.com/"]http://pentaxlensrange.blogspot.com/[/url]