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How to remove magenta cast when making IR images


martha

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I just had some fun making some infrared images with my M8.2 and a B&W 093 dark red filter. In Lightroom they have a magenta cast. What are your recommendations for removing that cast? ( I slid the "tint" slider in Develop all the way to the left.) Is there anything more I should do or is there an alternative fix for this in Lightroom? Thanks in advance for any advice.--martha

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  • 1 year later...

Re.: workflow,

I simply click on black & white image in the image>adjustment drop down menu in CS5 and then touch it up with contrast a little. If the image is slightly soft because you didn't adjust for IR focus exactly, try high pass filter sharpening and then adjust the slider down to about 20-25 and then flatten the image and save. If you don't like the slight amount of noise, you can reduce it, but only do it a little bit before you do the sharpening. Perfection!

 

I also tried using NIK Silver Efex Pro, which did the job, but the above method gives a cleaner image, at least in infrared.

 

My M8 setting are RAW, ISO 320, EV - 1/3, WB=2000K. I've been using the Hoya R72 filter with my 35mm Nokton f1.2, but I have a 39mm B+W 092 on order for my Leica glass.

I shoot at 1/30 sec for hand holding in bright sunlight and bracket the aperture from f8 to f16 and then pick the best for printing, depending how I want my shadows and highlights to look.

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Guest WPalank

Color channels should still be available, go to Curves> Green Curve, place a point in the highlights, shadows, or mid tone. Drag the curve up in the area.most affected. If slight, click on a point on the curve and gently tap with the up or down arrow until,balanced.

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