If you get decent sliders you wont get the "magnifying effect". We have sliders in the kitchen that face the sun until about 1:30 everyday and do not get alot of heat radiated through them, just be sure when you get sliders they have "Low E" glass, that is a special coating the reflects light out in the summer, but lets it pass through in the winter to help warm the house. We had old sliders on our other house and there's night and day difference with the low e glass.
