Information for blending history

I borrowed (buy this "old" Kit Zoom in Black :-) for NEX-6 body, because it seems more robust than the more recent 16-50er me and I have the time for the "extension" of the latter is not in buying want to take. Since it is a very long time on the market, I let myself through the imaging performance do not contradict but summarize here the following information for 18-55er together that I myself always find very useful without integrated panel with Zoom Lenses: focal length range and max. Aperture:

18-21 mm: 3.5
22-31 mm: 4.0
32-44 mm: 4.5
45-53 mm: 5.0
54-55 mm: 5.6

So just at the telephoto end falls the max. Bezel to 5.6. When (* 1.5) may waive telephoto focal length to 2 mm, then one can therefore win 1/3 f-stop. Is not much, but can u. U. mind if perhaps is already in high ISO performance.

By comparison, the Tamron 18-200mm F / 3.5-6.3 Di III VC already falls at 39 mm to max. Aperture 5.0 and 47 mm at max. Aperture from 5.6. From 74 mm the Tamron's then only 6.3 and less.