I just bought a Sigma 70-300 APO Macro Super II lense to mount on my D70. I did a few test shots and found that most of the shots have a slight haze. Very light but visible when compared to my kit lens. Funny thing is sometimes it can get pretty bad when shot at 300mm. It's a nice cloudy but bright day today. Thru the viewfinder, everything is crisp and clear. But after downloading to the comp, the haze appears.
Is this a due to lense defect or caused by some technical/atmospheric condtion? Should I send in the lense for repair?
This shot was taken at 220mm. You won't see the hazy cast by itself. But when sequenced next to a pic from the kit lense. There is a very slight cast.
At 270mm. You can see a hazy whitish cast to the shot.
This one at 300 mm focused at a nearer object. You can see the haze very clearly. Whole pic looks washed out.