Question Difference between Tamron 18-400 and Tamron 100-400

[Olliebollie999]

Hey there!

I was wondering, what the difference between Tamron 18-400 and Tamron 100-400 is. The 18-400 has a bigger zoom range, but is around 150 euro's (168 dollar) cheaper. This looks very weird to me.

Thank you,
Olivier

 

[rgd1101]

and the fstop speed? and other feature?

 

[Olliebollie999]

and the fstop speed? and other feature?

Tamron 100-400: https://www.tamron.eu/be_nl/objectieven/100-400mm-f45-63-di-vc-usd/
Tamron 18-400: http://www.tamron-usa.com/product/lenses/b028.html

 

[cin19]

The Tamron 100-400 mm is good one, it is not as well made as the Canon sony 100-400 mm, but it costs lot more less.
The Tamron 18-400 mm is the one we called all-in-one zoom lens. It is not as good as the Tamron 100-400 mm.

Also the Tamron 100-400 mm is the Full-Frame lens, which can be used in Full-Frame camera ( usually like the pro camera), but the Tamron 18-400 mm is the APS-C-only lens, which is not compatible with the Full-Frame camera. That is why the Tamron 18-400 mm is cheaper.