What is the normal age of the new lenses of digital camera in hot weathering?

I do not know of any Canon or Nikon DSLR lenses that are made of plastic so this should be a cause of worry. Some lens housing are made of plastic, but these are of high quality and should not deteriorate under normal condition.

As a precaution, don't leave the lens in direct sunlight (afternoon sun) for long periods and never in an enclosed glass area (like on a car dashboard) in the sun. I try not to touch the lens surface as much as possible. If you use a good quality glass filter (UV), you will not need to clean the glass of the lens (only that of the filter which you can easily replace).

I used Minolta equipment for some years and nevertheless have a Sony. i can inform you that Minolta lenses DO fit Sony cameras and artwork besides as they ever did. the only ingredient to keep in mind is the magnification ingredient, led to by using the distinction between the size of the 35mm action picture area and that of the Sony sensor - x1.5. In prepare this suggests that a lens marked as, case in point, 50mm has the assurance, on the Sony, of a 75mm lens. do not forget approximately, however, that jointly as the assurance of a lens is magnified all the different characteristics of the lens stay a similar. So, once you utilize the 18-70mm equipment lens, on the 18mm end you get the assurance of 18 x a million.5 = 27mm , you nevertheless get the distortion of an 18mm lens. it is bearable, yet observe of it. the suited of luck, regardless of you establish.

Plastic is used in construction. Only the cheapest compacts use plastic optics.

I, and many others, use Nikon lenses in the most insane climates and the main dangers are moisture and dust, not heat. In that respect nothing has really changed.

Temperature should be okay for the DLSR lenses as soon as its not boiling but what damage the lense is the moisture.