Help with IR Hot Spot

Every frame I shoot with a camera converted for IR has a hot spot in the center. In some images it is not too noticeable but it is always there. I was wondering if anyone could advise me on creating an action to remove or minimize it. Manually I can darken the center of the frame using the burn brush but sometimes when there is other detail there the results are not too pleasing. In this shot the hot spot is clearly visible.

HOSTED PHOTO
please log in to view hosted photos in full size.

what filter and camera r u using ?
who did the convert ?

EL_PIC wrote in post #11827454
what filter and camera r u using ?
who did the convert ?

This was a conversion by MaxMax of a Sony R1 10mp 1.6 crop camera.
I used a 830nm filter for this shot; but the hot spot is there regardless of filters (any or none). They do warn that all IR conversions may show hot spots. I was thinking of converting my 40D but now having second thoughts due to the hot spot issue.

The hotspot will depend on the lens and the aperture (some lenses are ok until stopped down to some point i.e. f22 is bad on more lenses than is 5.6 but some lenses are bad wide open). I think it is irresposible for a company to do a conversion on a camera that has such a bad hotspot without giving you dire warnings. Does shooting wide open help?

Qbx wrote in post #11827608
This was a conversion by MaxMax of a Sony R1 10mp 1.6 crop camera.
I used a 830nm filter for this shot; but the hot spot is there regardless of filters (any or none). They do warn that all IR conversions may show hot spots. I was thinking of converting my 40D but now having second thoughts due to the hot spot issue.

And you got Hot Spots as they warned you.
Send them the pics and exp info for their adjustment
or to post on their "Wall of Shame".
note - special filters and lenses can reduce this but put ball in their court first.
see ... http://dpanswers.com/c​ontent/irphoto_lenses.​php

EL_PIC wrote in post #11829580
And you got Hot Spots as they warned you.
Send them the pics and exp info for their adjustment
or to post on their "Wall of Shame".
note - special filters and lenses can reduce this but put ball in their court first.
see ... http://dpanswers.com/c​ontent/irphoto_lenses.​php

Thanks for the link. Good info there. Actually I have taken some nice IR shots with this camera with some PP work to darken the hot spots. The spot will vary with zoom & aperture. I was hoping there might be some photoshop action that others have developed that might reduce it.