took the plunge and not regretting, great lens. Everything about it is perfect; lens caps, buttons, build. Pics are super sharp and with only a 5Ti I'm thrilled; walk around the house I haven't taken it off for 4 days now.

After doing a lot of homework looking up this lens, I decided to purchase it. I've not been disappointed! I have had it for a several months over the summer and into the winter taking a variety of shots and been very pleased with the results.

Durable; Great Picture Quality; Versatile walk about lens

I had to wait for this as it was a special order but it was well worth it. I hated having to carry more than one lens and now I don't have to. It takes great close-ups, great distance shots and of course everything in-between.

Versatile lens if you only want to carry one lens. A little heavy, so it takes some time to get used to.

The Super zoom has always been a popular choice for travel and general photography, although until now there has been a limit on the telephoto end of the scale around 300mm. Now Tamron has pushed the technology beyond that, breaking the 300mm barrier and offering a staggering 18-400mm range.

Of course any demanding fan of photography would spot the flaws of the tested lens. If you prefer good image quality across the frame and a better, more efficient autofocus unit it would be more sensible to divide the 18-400 mm range into two lenses.

Very universal focal range; Good image quality in the frame centre; Proper correction of longitudinal chromatic aberration; Lack of problems with spherical aberration; Sensible coma correction at the shortest focal length; Low vignetting at longer focal lengths; Efficient image stabilization

Weak image quality at the maximum relative aperture on the edge of the frame and across the whole focal range; High level of lateral chromatic aberration at 50 and 400 mm; Significant distortion at 18 mm and in the 35-100 mm focal range; A bit too high astigmatism; Slow autofocus which needs further...

If manufacturing, design and economic constraints were not issues, the perfect lens would cover a huge range of focal lengths, from wide angle to long telephoto and a very wide, constant maximum aperture would be always available.

Powerful performance that exceeds your imagination. Introducing the world's first ultra-telephoto all-in-one zoom with a 22.2X zoom range. Now you can shoot everything from vast landscapes to details of a bird with a single lens.

The Tamron 18-400mm lens is a fun interchangeable lens that will serve you well for many different types of photographs. You'll be amazed at the different types of looks you can achieve through the wide focal range of this lens, which makes this model a great lens to take when traveling.

Amazing focal range; Low price tag versus other large zoom lenses; Both Nikon DSLR and Canon DSLR versions available; Improved image quality throughout range versus previous Tamron zoom lenses; Easy to use controls on the lens; Lens moves through its zoom range smoothly; Reasonably good autofocus...

Image quality not good enough for advanced photographers; Noticeable barrel distortion at smallest focal length; Slight sharpness problem at maximum focal length; Some sharpness issues at high f-stop numbers; Some chromatic aberration problems; Not really a weatherproof model

Tamron's latest DSLR superzoom offers every focal length that most photographers will need in one lens. But is ...

Good levels of sharpness for a superzoom; Customisation via optional console; Built-in vibration control

Fringing can be noticeable at 300-400mm; Only available for Canon and Nikon APS-C DSLRs; No focus distance on lens barrel