考虑到佳能这支200-800大概率能做到f/9的衍射极限（像点基本在衍射圈内，我粗略估计的理论30线对MTF...
而现在的真实情况是佳能RF 200-800光圈更小，实际拍摄时快门也更慢，高感慢速肯定对画质造成劣化，而且...
RF-S 10-18mm F4.5-6.3 IS STM and RF 200-800mm F6.3-9 IS USM. Plus, they have also added two new power zoom adapters (PZ-E2 and PZ-E2B) that can be used with the RF 24-105mm F2.8L IS USM Z.
I have most of the lenses compatible with the TC and will be getting the RF 100-500 in a few months, once I've paid off the RF 200-800, which is being delivered soon. I've tried to Google it but I'm drawing a blank on the answer. ...
As an "RF" lens, the Canon RF 2x extender is compatible with all Canon RF-mount cameras, the R-Series models as of review time. Only specified RF lenses are compatible, with notably the Canon RF 70-200mm F2.8 L IS USM Lens missing from the list. This lens was designed for ultimate...
Most optics are not exactly what they say, but 707/10 and 800/11 should nominally both be 70.7mm. That's the same as a 200/2.8 and 400/5.6, too. With a very sharp lens, 200/2.8 can capture the same image as 800/11, if the 200/2.8 has 16x the pixel density. So, ability to...
Canon EOS R5, Canon RF 100-500mm L IS USM at 270mm wide-open at f/5.6 hand-held at 1/320 at Auto ISO 200 with -0.3 stops of exposure compensation (LV 12.4), Perfectly Clear. bigger, full resolution or camera-original © JPG file....
As I said in the F2.8 lens review, I've been privileged to use a vast range of lenses, but picking up a new Canon L-series lens always puts a smile on my face. It was hard to believe that a 70-200 f/2.8 lens could be so small. Admittedly, after that big reveal, it is less...
Review Main Features Max Format: 35mm FF Canon RF Mount Optical Image Stabilization (up to 5.5 stops) Weather-sealed Filter Thread: 52mm ( Drop-in type) Weight: 3,090g / 6.80 lb Dimensions(øxL): 168mm x 472mm Min Focus Distance: 4.2m Max Magnification: 0.15x Released in April ...
Shoei RF-1200 Dedicated Helmet Review and Sizing Info from STG The Shoei RF-1200 Helmet Weighed 3.5 lbs in a size Medium on our shipping scale. We feel the Shoei RF-1200 Helmet has an Intermediate Oval Shape, while offering a sport / race fit with on / off effort similar to the Icon...