Sigma 300-600 f/4: HALF the price, TWICE the performance!

Get a free trial of DxO PureRAW or PhotoLab or at https://SDP.io/DXO Use 15% coupon TONY or CHELSEA (whoever is your favorite) Buy the Sigma 300-600mm f/4 Zoom Lens at http://SDP.io/S300600 Tony & Chelsea Northrup review of the Sigma 300-600mm f/4 - the ULTIMATE wildlife lens. They compare it to the Sony 600mm f/4, the Canon 200-800mm zoom, and the Sony 400-800mm zoon. Here's some details: Pricing and Mounts: It's half the price of a 600 f/4 lens and available for L mount or Sony E mount (at 15 fps limitation). Weight: It's noticeably heavier than a 600 f/4 lens and significantly heavier than the Sony 600 f/4 (8.75 lbs vs 6.7 lbs). Using a tripod is highly recommended. Features: It has an internal zoom, stabilization modes, a drop-in filter, white thermal insulation paint, a function ring, a click/unclick tripod mount, and a quick-release plate. Image Quality: Sharpness is about the same as a 600mm when cropping and comparable to a smaller zoom, but real comparison photos are needed. The better ISO performance and shallower depth of field should be shown. May not be quite as good as a 600 f4 with a test chart. Autofocus: Autofocus and subject detection were good with the S1R II, even picking up birds the Sony a1 didn't find. Best Use Cases: Best for shots when an animal gets close or when a subject flies overhead. Not recommended for handheld shooting. Comparisons: It's heavier and half the price of a 600 f/4, with similar sharpness. Comparison photos show how it compares to smaller zooms. Testing: Test shots should include comparisons to a 600 f/4, a 200-800, and a 400-800. 0:00 Introduction 0:26 DxO Promo 1:21 Design 2:56 Handling vs smaller zooms 3:49 Sharpness of Sigma 300-600mm f4 4:24 f4 Aperture Matters! 5:31 Sigma 300-600 f4 vs Sony 600mm f/4 5:48 Sigma 300-600 f4 vs Canon 200-800 & Sony 400-800 zooms 6:22 Lumix S1R II wildlife autofocus performance 6:38 Why zooming back to 300mm is important 7:09 Summary 8:11 DxO Promo