Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good value in this updated design.

The new Di lenses from Tamron are designed to work well with digital cameras, although those with the Di will work for 35mm as well (Di-II only work with smaller, APS-C chip size digital cameras). This is an improvement on the fine 70-300 LD (Low Dispersion glass) design. The major improvements in this lens are in the coatings, to help reduce any color bias, and minimize reflections. Additionally, lens manufacturers are doing more inside the barrels to reduce reflections.Like the older LD design, the new lens has a close-up mode (not strictly "macro") position that allows images 1/2 lifesize on the negative. That's about twice the size of most 300mm zooms lacking this feature.Compared to the current Pentax lineup, this is a real winner. The Tamron includes a lens hood, and has a much longer warranty (6 years vs. 1). The Pentax design is also older, and may not meet the critical demands of the new digital chips.