Tamron 11-20mm F/2.8 Di III-A RXD (Sony E)

Used mainly for scenery and architecture. The constant (and very usable) f2.8 is great for low light. Fits my needs perfectly.

Tamron's 11-20mm F2.8 Di III-A RXD lens is a wide, weather-protected zoom lens for Fuji X and Sony E mirrorless cameras with sharp, but not stabilized, optics.

No two ways about it, this is an extraordinary lens. Its performance is superb, it is far lighter than it could be expected to be, it has weather sealing and the price is realistic. An ideal travel companion, with the bonus of that fast, bright f/2.8 aperture. It doesn't have any form of shake reduction, but fortunately, this may be more acceptable in an ultra-wide lens rather than in a telephoto. Still, that would have been the icing on the cake and some Sony bodies do have inbuilt SteadyShot. When we combine this with Tamron's matching 17-70mm, it gives a powerful duo of lenses that could be all the travelling light photographer would need.