A study conducted by market research firm J.D. Power and Associates has found that “Nikon Pro Series” DSLRs rank highest in customer satisfaction. The company surveyed 4,500 verified online DSLR buyers to find out their satisfaction across five factors: image quality, durability, features, ease of use, and responsiveness.
The Nikon Pro Series ranks highest in online buyer satisfaction with a score of 914. The Nikon Pro Series performs particularly well in shutter speed/lag time, durability and reliability and ease of operation. The Canon Mark-Series follows in the rankings with a score of 909, and performs particularly well in performance and picture quality. The Canon D-Series and Nikon D-Series rank third in a tie, each with a score of 889.
Overall, customers were most satisfied with image quality but least satisfied with durability and responsiveness.