Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Light, compact and great depth

We travelled to Alaska and wanted something small for travel, but strong enough to see the wildlife. These were perfect! However, while on a whale-watching tour, my husband (who wears glasses) used a pair of Bushnell that were good for 'glasses wearers' and he preferred those. However, for non-glasses wearers, the Olympus was great.