R.Sriram wrote (edited for space):
> However my question is about flare. On some other lenses I've tested > flare makes itself visible in the form of hot spots or starbursts. > With the 28-70 I don't see this happening, however, this lens seems > prone to "smearing"/"haze", i.e., it looks like haze over large parts > of the image, resulting in loss of contrast and colour. Of > course, this > only happens when I point the lens at light sources / the sun / etc. > > The lens has always been used with the hood. I've tested it with and > without a filter. The filter is an expensive B+W which is > very clean, btw. > The flare seems more prominent with the filter on. > > I was quite surprised when I compared this to my old 28-105 > which showed > much less flare or "haze" effects under the same circumstances. > > Question : Is this normal with this lens? Has anyone else experienced > this? Should I be concerned about anything? ---------------------------------------------------------------------- Two things. First, faster lenses are always more susceptible to sun flare because of the large front element. There are also more elements in the lens causing more ghosting/reflections with the increased number of surfaces compared to your 28-105. When you add the filter, you add 2 more surfaces and increase flare again. Yes, this is normal for a fast lens. Use a hood and do not shoot into the sun if at all possible. Peter K * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
