I have had the same experience, setting it to +1 fixed the prob but when I installed the update it worked a lot beter,only had to change for whites

Jack

yep.

I`ve used the Teleplus MC7 2x on the Pentax A 70-210 Macro, @ 70, which is the macro setting and have obtained very good photos, at about 2.5ft it won`t fill the frame with a Dragonfly, and are very sharp as well.this lens combo is all manual, but you can use the green button,and manual focus which is OK for slow moving shots.

I find you can get good results with pentax A 70-210 Macro with 2x,was playing around in the back-yard, here is an example, 210 with 2x at about 15 yds;

[IMG]http://i858.photobucket.com/albums/ab142/montyaus/birds/honeyeater1a.jpg[/IMG]

this is same lens at 70, set to macro mode, with 2x at 18in with flash ;

[IMG]http://i858.photobucket.com/albums/ab142/montyaus/birds/Domestic%20Wildlife/macro/horse-fly047a1024.jpg[/IMG]

I have one similar to this when trying to check for any stains on the K7.

Shot a white sheet not worring about focus one shot was too close about half min focus distance,maybe less.

It was pixilated in browns,light,darker to redish browns.

Jack.

I have the 150-500 it does have manual focus via switch, but does not have apture ring on pentax mount

I have no first hand knowledge of 50-500 but have been told it has better I,O.

The reason for a lens to be better on a APS-c is because it only uses the centre of the lens, or a smaller part of it.

If you want to see hi ISO from the K7, have a look in the post...Hi ISO with K7... there are photos that some of the members have posted,do a forum search,from the bar at the top of this page.

I myself like to shoot 100 ISO if posible but will take it higher if it is required,but if you shoot bird s with 500mm lens in the shade you will be in trouble.

I like the K7 but will look at upgrading in the future K3?

Manual 125 f8 ISO 200

jack

Just to carry on from the other posts, try taking the camera off of auto.

Try shooting in;

P mode this will give good results.the Camera will set Shutter and apture,ISO will set it`s self

AV the apture is set, you set shutter speeds for the subject,(this is a matter of suck it and see but as a rule you need shutter speed equal to focal length of the lens you are using,use shake reduction when hand holding ) and ISO will set it`s self.

Others will let you know if I am wrong.

PS for what it is worth I like and use AV mode.

If you are used to heights, climbing a Tower makes no difference if it is 10ft or 1000ft,
It only takes, longer.