Sigma 17-70 Macro

[trick10]

I have a new Pentax K-5 and am currently using my lenses from my Pentax 35mm (35-80 f4 & 100-300 f4.5) which appear ok to me, however, I am new to this field and don't believe I am qualified to make judgement on this combination.
Has anyone tried this kind of setup and prepared to make comment on this combination?
Also, following much research and reading reviews and articles about many lenses, I am considering purchasing a Sigma 17-70f2.8 Macro. Am I heading in the right direction?
I would be most greatful for any feedback.

Regards,
Trevor

[grw46]

Trevor you need to give a little more info as to your intended use of the camera.
http://www.pentaxforums.com/lensreviews/
This site will give you a lot of info regards lens for Pentax , I have found it a great source of unbiased info. Cheers Garry

[trick10]

Hi Gary, Thank you for answering my threadI have a passion for Landscape photography and interested in Macro but haven't had access to a Macro lens.
I will investigate that pentaxforum site further as I have only had a brief look so far.
Regards Trevor