Do not try to shoot sunsets with the Sony wide angle lens. It flares with at least 3-5 halos bouncing off all the glass in the lens. The normal lens is great at sunsets with super anti-glare coating allowing nice compositions (off center) of the sun with little or no flare. However, the wide angle even centered flares like an Iraqie gun site...

That may be a little harsh of you Greg. You've added four extra elements (in three groups) to your zoom's line-up, so introducing 6 extra air-to-glass surfaces. Even with the best will in the world (and the best multi-coating) you're going to up the flare levels every which way. In lens making terms and tolerances you've added these extra elements off axis with the zoom's centre-line, so exacerbating the flare problem.

Add-on focal length converters are always going to be a second-class way of doing business. They have their uses, but come with unavoidable side-effects.

tom.