Some quick casual shots for testing while taking the kids for a walk yesterday evening. All handheld. I am very happy with the corner and edge sharpness this lens produces. IS worked very nicely for the last shot (1/8 sec).
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Another issue with an image stabiliser is that it takes a few seconds to settle. If you just point and snap, there a possibility that the gyros and elements haven't settled and you get soft images.
Got mine today from B&H. What a beautiful lens!
Ran through FoCal 1.9.7 tonight:
AFMA: +1 at 16mm; 0 at 35mm
AF Consistency (on 5DIII): 99.7%
Aperture Sharpness: Relatively flat from f4 to f6.3 at 16mm; sharpest at f4.5 at 35mm
Quality of Focus values are lower at 35mm (max around 1,920) than at 16mm (max around 1,970).
Testing condition: 2x 150W bulbs; EV 10.6; tested at both 25x and 50x distance.
Real world shooting experience: super fast AF; IS operation is extremely fast.
I love this lens. Will take it to a trip in Oregon in August.
If you are testing with tunsten bulbs and not natural daylight, you are limiting your testing to a shallow portion of the light spectrum. As the colour of light moved to the red end of the scale, there can be a focus shift and more inaccuracys. All you are testing there is the camera / lens focus ability under those lighting conditions.
I'm often correcting photographers who are calibrating their lenses at night (becuase that's when they have the spare time) when they should be calibrating them out doors in good light during the daytime.
Just to follow up, this is the result from FoCal. It is 63 shots in this chart. I stopped it there, because it was (of pretty obvious reasons) not able to determine an AFMA factor.
i'm waiting for someone to complain about the bokeh....