Canon 450D imaging with 50mm 1.8 lens

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Canon 450D imaging with 50mm 1.8 lens

Postby gfletcher » Sat Apr 09, 2016 1:48 pm

Hi guys
I have an unmodded 450D which I have fitted an Astronomik CLS clip filter.
I took some sample images using my Canon 50mm lens set at f2.5
The resultant lights came out with an extremely mid blue background.
I put the 5 light frames through deep sky stacked and the resultant tiff image was still quite a mid blue background.
Is this normal when using a CLS filter and if so how do i get rid of the blue background when I post process in Photoshop CS6 ?
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Re: Canon 450D imaging with 50mm 1.8 lens

Postby dave.b » Wed Apr 13, 2016 11:16 pm

Have you set the camera's white balance control to day light (sun symbol)? Anything else, including automatic WB, will through the colour balance off.

Other than that, you may simply have made the exposure too long, especially if the moon was up or there was still some twilight.

I use the CLS clip filter in my 600D without any real trouble.

Dave B.
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