Canon EF 70-300 mm f/ 4.5-5.6 DO IS USM naudotas. kaina 320 Euro . . Tel. 860501369 Galima deretis. https://www.efoto.lt/objektyvas/canon_ef_70-300_f45_do_is_usm . . https://www.amazon.com/exec/obidos/ASIN/B0001G6U3Y/kenrockwellcom . . http://www.photozone.de/canon-eos/201-canon-ef-70-300mm-f45-56-usm-is-lab-test-report-review . . http://www.pbase.com/cameras/canon/ef_70-300_45-56_do_is_usm . . Name: Canon calls this the Canon Zoom Lens EF 70-300mm f/4.5-5.6 DO IS USM.

EF: Electronic Focus. All modern Canon lenses focus with a motor in the lens.

DO: Diffractive Optics, which is Canons name for Fresnel lenses, previously only used in projector light condensers.

IS: Image Stabilization, which means no tripod needed except at night. See Why IS Matters.

USM: Ultra-Sonic Motor: The focus motor operates silently.