K5 infrared

jdowler · 06-03-2018, 01:22 PM

Does anyone know if an infrared filter will work with a K5.
John

Adam · 06-03-2018, 02:02 PM

It should work fine, but the K-5's sensor still has an IR filter which would block IR light. You'd have to get it removed for the camera to be highly sensitive to IR light.

**cpk** · 06-03-2018, 02:25 PM

An IR filter should work with the K-5; but without removing the camera's own IR filter, you will probably require very long exposures and the use of tripod.The long exposures are required to counteract the effect of the camera's IR filter.

johnhilvert · 06-03-2018, 08:46 PM

Originally posted by jdowler

Does anyone know if an infrared filter will work with a K5.
John

It should work OK. I use a #72 filter with my K-01 which has a similar sensor.

Two main advantages are:
- being mirrorless you can focus live.
- No need to cover the view finder as there is none :-)

Medex · 06-04-2018, 02:55 AM

You can do simple test - mount the IR filter on the lens, go to Live View mode and use any remote control turned to the lens. If you can see red spot, your camera can do IR pictures. But as other members stated, you will need long exposures.
I did IR modification of K-5 by my self, used 640 nm filter. Now I can shoot handheld without problems.
MG Mindaugas - Panoramos detal?. Infrared | Facebook

**fwwidall** · 06-04-2018, 06:58 AM

Just did a quick test with my K5.

Normal exposure was 1/500s, F4, ISO 800

With R72 filter it was 2s, F4, ISO 800.

So as others have said long exposure times are required when using an R72 filter.

Hope that helps,

Fred.

**cpk** · 06-04-2018, 07:02 AM

Originally posted by Medex

I did IR modification of K-5 by my self, used 640 nm filter. Now I can shoot handheld without problems.

That's very brave. I had my K-7 converted to IR; and yes, handheld shots become very easy.

jdowler · 06-04-2018, 03:05 PM

Thx everyone for your help

06-03-2018, 01:22 PM	#1
jdowler New Member Join Date: Oct 2010 Posts: 20	K5 infrared Does anyone know if an infrared filter will work with a K5. John

06-03-2018, 02:02 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	It should work fine, but the K-5's sensor still has an IR filter which would block IR light. You'd have to get it removed for the camera to be highly sensitive to IR light. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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06-03-2018, 02:25 PM	#3
cpk Site Supporter Join Date: Feb 2010 Location: Montreal Posts: 641	An IR filter should work with the K-5; but without removing the camera's own IR filter, you will probably require very long exposures and the use of tripod.The long exposures are required to counteract the effect of the camera's IR filter.

06-03-2018, 08:46 PM	#4
johnhilvert Senior Member Join Date: May 2015 Location: Canberra, ACT Posts: 245	Originally posted by jdowler Does anyone know if an infrared filter will work with a K5. John It should work OK. I use a #72 filter with my K-01 which has a similar sensor. Two main advantages are: - being mirrorless you can focus live. - No need to cover the view finder as there is none :-)

06-04-2018, 02:55 AM	#5
Medex Pentaxian Join Date: May 2013 Location: Vilnius Posts: 1,021	You can do simple test - mount the IR filter on the lens, go to Live View mode and use any remote control turned to the lens. If you can see red spot, your camera can do IR pictures. But as other members stated, you will need long exposures. I did IR modification of K-5 by my self, used 640 nm filter. Now I can shoot handheld without problems. MG Mindaugas - Panoramos detal?. Infrared \| Facebook

06-04-2018, 06:58 AM	#6
fwwidall Site Supporter Join Date: Sep 2014 Location: Waterloo, Ontario Photos: Gallery \| Albums Posts: 276	Just did a quick test with my K5. Normal exposure was 1/500s, F4, ISO 800 With R72 filter it was 2s, F4, ISO 800. So as others have said long exposure times are required when using an R72 filter. Hope that helps, Fred.

06-04-2018, 07:02 AM	#7
cpk Site Supporter Join Date: Feb 2010 Location: Montreal Posts: 641	Originally posted by Medex I did IR modification of K-5 by my self, used 640 nm filter. Now I can shoot handheld without problems. That's very brave. I had my K-7 converted to IR; and yes, handheld shots become very easy.

06-04-2018, 03:05 PM	#8
jdowler New Member Join Date: Oct 2010 Posts: 20 Original Poster	Thx everyone for your help