Colour through viewfinder?

mrpink123 · 07-08-2009, 10:25 PM

OK, so this is a strange one. Can anyone explain this to me?

I was out with the camera tonight with my brother in law. He has a Canon 450d with the 18-55 IS lens, I have a Sony A700 with a Sigma 17-70.

Anyway, the sun is setting and the sky lights up a beautiful pink. We both snap away. I am noticing that the colour through my viewfinder is rather less pink than what I'm seeing with the naked eye. I point this out to the brother in law, and he says it looks fine to him. So I look through his viewfinder and sure enough, the colour in the sky is far more vivid than through mine. The sky through my viewfinder looks a lot bluer, with the pink stretching much less far up the sky if that makes sense.

So obviously the first thought is that it must be a filter, but we both have just a UV filter on the camera. I even took mine off as a sanity check.

So, does anyone have any suggestion for why this might be happening? Is it a coating on my lens or something?

weetsie · 07-08-2009, 10:38 PM

maybe the lens?

take both lenses off and then see what colour the light is.

OrbitalPete · 07-08-2009, 10:53 PM

Well, basically it has to be a colour cast in the optics of the viewfinder or the lens.

Lee` · 08-08-2009, 1:23 AM

This will be the lens, it depends on the material used to create the glass, as different glass with have a different dispersion curve, ie the way the glass interacts with the light will change from lens to lens depending on the material used to create the lens. So with the sigma, if it's cheaper glass you might not get as vivid colours as you get with a more expensive lens.

weetsie · 08-08-2009, 3:57 AM

Quote:

Originally Posted by Lee`

This will be the lens, it depends on the material used to create the glass, as different glass with have a different dispersion curve, ie the way the glass interacts with the light will change from lens to lens depending on the material used to create the lens. So with the sigma, if it's cheaper glass you might not get as vivid colours as you get with a more expensive lens.

im surprised that the sigma doesn't perform better costing 3-4x the price of the canon kit lens.

mrpink123 · 08-08-2009, 4:42 PM

Quote:

Originally Posted by weetsie

im surprised that the sigma doesn't perform better costing 3-4x the price of the canon kit lens.

Indeed, this is one reason I'm surprised. Might have to investigate this some more.