A6000 with IR 720nm filter

LGstudio · Apr 15, 2015

I've recently bought a (cheaper) IR filter form ebay to try how it works. (I have tried the remote control test and I was able to see the blinking IR LED of it) I took some shots in full daylight but it looks like i have bought a fake filter. Does these pictures really should look like this?

16mm ISO100, f/8, 1s. Out of the camera downscaled.

16mm, ISO100, f/8, 13". After an auto WB in photoshop, downscaled.

(I know they are not in focus, these are just quick shots)

I have thought that the greens should be white (bright) on these pictures. I have also tried some post processing but they did not look like they were IR shots.

Is my filter fake or I am the one doing something wrong?

Thanks for the answers

HPS3 · Apr 15, 2015

I think that's how they come OOC. You need to manually adjust WB and Tint I believe.

Curtis Khan · Apr 15, 2015

When you swap the red and blue channels you should get something looking like this. You can also tweak the white balance. I also included a black and white version:

Curtis

LGstudio said:
I've recently bought a (cheaper) IR filter form ebay to try how it works. (I have tried the remote control test and I was able to see the blinking IR LED of it) I took some shots in full daylight but it looks like i have bought a fake filter. Does these pictures really should look like this?

16mm ISO100, f/8, 1s. Out of the camera downscaled.

Thanks for the answers

LGstudio · Apr 15, 2015

Thank you for your time showing this to me.

However, on most of IR photos i can see white trees, grass, etc. How could I make it that bright with this filter? I miss that from my images.

SQLGuy · Apr 15, 2015

Not sure about the A6000, but the A7's hot filter is very strong... almost no IR makes it through.

I suspect the A6000 is the same, and, if you want to shoot "real" IR, you'll need to have it converted.

Conversion involves removing the hot filter that's in front of the sensor and replacing it with either an IR filter (so the camera will only shoot IR, but you can use any lens without needing filters for the lenses) or plain glass (which makes the camera full spectrum). A full spectrum camera can shoot IR, with an IR filter on the lens, or visible light (with a hot filter on the lens) or UV (with a UV filter...) lots of flexibility, but also lots of filters.

BTW, a converted camera is almost as sensitive to IR as a regular camera is to visible light; so you have normal, hand-holdable exposures in daylight.

captura · Apr 15, 2015

SQLGuy said:
Not sure about the A6000, but the A7's hot filter is very strong... almost no IR makes it through.

I suspect the A6000 is the same, and, if you want to shoot "real" IR, you'll need to have it converted.

Conversion involves removing the hot filter that's in front of the sensor and replacing it with either an IR filter (so the camera will only shoot IR, but you can use any lens without needing filters for the lenses) or plain glass (which makes the camera full spectrum). A full spectrum camera can shoot IR, with an IR filter on the lens, or visible light (with a hot filter on the lens) or UV (with a UV filter...) lots of flexibility, but also lots of filters.

BTW, a converted camera is almost as sensitive to IR as a regular camera is to visible light; so you have normal, hand-holdable exposures in daylight.

JimKasson · Apr 15, 2015

SQLGuy said:
BTW, a converted camera is almost as sensitive to IR as a regular camera is to visible light; so you have normal, hand-holdable exposures in daylight.

That's true with many conversions, but I can attest from experience that the LifePixel "deep IR" conversion on a D3x loses a lot of sensitivity. The "Standard IR" conversion behaves as you said on the a7II.

Jim

--
http://blog.kasson.com

nandbytes · Apr 15, 2015

I can see some IR style effect but it seems like you have a very dark red filter than a R72 IR filter (which is still bordering on visible light anyway).

I too have a cheap 720nm IR filter which comes close to the hoya R72 (which I also own) but still not as good. Here's a couple examples I took recently with my cheap 720nm IR filter (on my converted full spectrum nex-5n)

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Focus on what you have, not on what you don't.

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captura · Apr 15, 2015

SQLGuy said:
captura said:

SQLGuy said:

Not sure about the A6000, but the A7's hot filter is very strong... almost no IR makes it through.

I suspect the A6000 is the same, and, if you want to shoot "real" IR, you'll need to have it converted.

Conversion involves removing the hot filter that's in front of the sensor and replacing it with either an IR filter (so the camera will only shoot IR, but you can use any lens without needing filters for the lenses) or plain glass (which makes the camera full spectrum). A full spectrum camera can shoot IR, with an IR filter on the lens, or visible light (with a hot filter on the lens) or UV (with a UV filter...) lots of flexibility, but also lots of filters.

BTW, a converted camera is almost as sensitive to IR as a regular camera is to visible light; so you have normal, hand-holdable exposures in daylight.

Click to expand...

Click to expand...

nearly-an-old-codger · Apr 15, 2015

Try setting a custom white balance off of grass on a bright day. This sometimes helps.

Also visit Lifepixel web site. They have some really great tutorials for free.

I also make a custom white balance using the Abobe DNG profiler available free from Adobe Labs.

Brian

Curtis Khan · Apr 15, 2015

What time of day did you shoot these? From my experience with a converted Sony a100 and an a33, the "white" you seek is largely dependent on the type of foliage and the time of day. I notice that palm trees and coniferous trees reflect a lot of IR light and are more prone to this look. I am from the tropics so I can't speak for other types. Early morning and late afternoon does not have as much drama as when the sun is close to or directly overhead. A couple samples here forgive the poor watermark I was hurrying to respond:

Gave this one a sepia tint

Curtis

captura · Apr 15, 2015

SQLGuy said:
captura said:

SQLGuy said:

captura said:

SQLGuy said:

Not sure about the A6000, but the A7's hot filter is very strong... almost no IR makes it through.

I suspect the A6000 is the same, and, if you want to shoot "real" IR, you'll need to have it converted.

Conversion involves removing the hot filter that's in front of the sensor and replacing it with either an IR filter (so the camera will only shoot IR, but you can use any lens without needing filters for the lenses) or plain glass (which makes the camera full spectrum). A full spectrum camera can shoot IR, with an IR filter on the lens, or visible light (with a hot filter on the lens) or UV (with a UV filter...) lots of flexibility, but also lots of filters.

BTW, a converted camera is almost as sensitive to IR as a regular camera is to visible light; so you have normal, hand-holdable exposures in daylight.

Click to expand...

Click to expand...

Click to expand...

Click to expand...

captura · Apr 15, 2015

SQLGuy said:
No problem. Looking forward to seeing some IR shots from you. I'm seeing more and more IR here... maybe someday we'll get an IR forum.

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