I was fortunate to purchase directly from Amazon and prior to buying, rented this lens - I use for portrait sessions, and find the focus to be sharp and fast even with fast-moving younger children.

Accurate focus would occur about every 4-8 frames depending on the subject

The focus is slow so if you want to track fast moving things you will get a lot of misses

It is MUCH faster in focus speed performance than the Canon 85mm 1.2 L II though, which can easily be one of the slowest focusing lens I have encountered other than Nikon's 80-400mm VR

Focus is smooth and easy, colors bold and rich and it's sharp into all four corners

Since you probably will not be using for sports photos, the slightly slow focus is insignificant

Better technique and pre-focus is probably needed for those action shots

I found the older lens to be slow focusing and very loud.

The focus is extremely sharp, but a tad slow.

I was madly disappointed to have severe front-focus issues with my copy of this lens when it first arrived

The focus is extremely sharp, but a tad slow.

Thanks to the wide f/1.4 aperture, you always get a bright image, and on both my D3 and D300, focus is blindingly fast and dead-on accurate

Even with my inexsistant skills this lens makes pictures with its razor sharp focus and dreamy bokeh worth every penny I paid for it

Focus is sharp, although a little slow (see YouTube comparison with 1.4D).

Fast focus on my

Great bokeh effect with this lens, sharp focusing, and perfect for event photography.

The focus is very fast and quiet

Super fast focus, creamy bokeh, tack sharp edges even wide open

It did require some focus fine-tuning so don't neglect that

This lens is super sharp, fast focusing and renders out of focus elements (bokeh) beautifully.

Less positive- fairly big and heavy- fairly large minimum focus distance of 85cm (33.5 in) can sometimes get in the way of, say, a very close range portrait- fairly expensive

I had to go available light, and this thing saved the day!This lens focuses fast, but not as fast as the pro f/2.8 glass.

I would compare it more to the 85mm f/1.8D speed wise, but it is VERY accurate, which is critical when shooting with such a narrow depth of field