Reducing the "halo" in HDR?

[Durbs]

I've tried a few HDR shots using Photomatix.

Have fiddled with various settings and such like - but I often find, using the most pleasing settings for 90% of the photo there is a "halo" of lightness around details such as trees (or infact anything without a crisp edge).

e.g:


Not a great photo anyway, I think an ND filter would've acheived the affect I was after. but clearly illustrates the halo effect.

Is there a specific setting that affects this?

[Digidave]

I'm on a different computer than my Photomatix but I think you need to adjust "Light Smoothing" & then adjust the overall strength down a little bit. There is no 1 adjustment that works, but rather a combination of adjustments. By the looks of this photo, I think you should start by adjusting your "Black Point" up a little bit. This will bring up the shadows a little & decrease the washed out appearance of the grass.

[xxpinballxx]

DigiDave is spot on the light smoothing slider is where you can get rid of it.
Some shots just wond't do exactly what you want.....I've played quite a bit with photomatix and
also notice that if you adjust the highlight smoothing will sometimes get rid of it. ALthough in this shot i dont believe that will work since the far horizon is more towards the white side as opposed to the blues.