Sony Alpha 850 suitable for IR?


TBSOO

New Member
Jan 6, 2010
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Is sony alpha 850 suitable for IR?
 

Is sony alpha 850 suitable for IR?

Don't see why not. It is either a matter of IR filter on lens+tripod+long exposure or IR-mod without the hassle of tripod and long exposure. What matters is really the lens used as some will cause hot spots.
 

Don't see why not. It is either a matter of IR filter on lens+tripod+long exposure or IR-mod without the hassle of tripod and long exposure. What matters is really the lens used as some will cause hot spots.

Is tamron 28-75mm 2.8 suitable in this case?
 

Did you check the stickies?
They have quite alot of information on the compatibility of len & cameras.
 

Yup, I did. This lens is not mentioned.
 

hmm, I hv no idea too :dunno:

can try renting the lens to try?

and i am not to sure bout this, but i heard that chances of hotspots are lesser when using screw-on filters, rather than a modded-SLR.

anyone to verify this?
thanks!
 

can try renting the lens to try?

and i am not to sure bout this, but i heard that chances of hotspots are lesser when using screw-on filters, rather than a modded-SLR.

anyone to verify this?
thanks!

hmm, not sure about that but I seem to have come across an exception. before i converted my KM7D to IR, i tried my lenses with a screw-on IR filter and vaguely remember my Sony 50mm was ok, amongst a few others. but when i got my cam converted eventually, the Sony 50mm seems to show a very faint hot spot...not the very 'hot' type but enough to be spotted :( luckily i still have other lenses to play with. :)
 

can try renting the lens to try?

and i am not to sure bout this, but i heard that chances of hotspots are lesser when using screw-on filters, rather than a modded-SLR.

anyone to verify this?
thanks!

I used to have a KM 28-75mm, rebranded tamron..

If I remember correctly it used to have hotspot.. :think:
Cannot test it now since ive sold the lens