Sony alpha blog posted its full review of the Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD which you can read here or you can check out the excerpts below:
The Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD (749 euros) is a pleasant surprise. Yes it is heavy , yes it is very long , yes the aperture is quite small but image quality is there with very good sharpness , some very nice color rendition and smooth background blur when used at close distance.
Pros
- Very good to Excellent sharpness between 18 and 100mm
- Very good bokeh balls up to F8
- Very good background blur
- Very good color rendition
- Very good AF in photo and video in the range 18-150mm
- Very low Chromatic aberrations
- Good build quality
- Price : 750 euros
Average
- Sharpness above 150mm is good to very good but clearly below the one < 100mm
- No control buttons on the lens (No AF/MF, no focus hold button)
- AF above 150mm sometimes hunting in photo and video
Cons
- Heavy
- Big
- Very Stiff zoom ring for video
- Resistance to flare
- High Distortion
- Significant Vignetting wide open
- Slow aperture in the range above > 100 requiring high ISOs
Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD:
B&H Photo / Amazon / Adorama
