My video showing how to do the fine tuning is here: http://www.youtube.com/watch?v=Rs57G4...This is best viewed in 720p to see the differences really clearly. The second photo is so sharp in 720p.As you will see in the two examples I show in this video, even a slight focus issue can make a huge difference when you take photos of people.The first image shown is the result from the Nikon D7000 without any kind of correction. I focused on my daughter's eye and it's not sharp. The camera has back focused probably by nearly an inch.When I apply the AF Fine Tune (I had tested it earlier and found I needed a setting of -12 for the Nikon 18-105mm zoom lens), you can see that the clarity and sharpness instantly improve substantially.In the second photo sharpness is absolutely great. It shows just how good that lens really is. But in the first photo you might think the lens is a poor performer.As I've said in the other videos covering this focus issue, you might never notice the problem if you take pictures mainly in good light at greater distances than this close up. That's because at smaller apertures (which you get in better lighting) and at longer distances, the depth-of-field is greater.Depth-of-field is a fancy term that just means how much will appear to be in focus from front to back and it varies with the settings AND the lens on your camera.For portraits, where you are usually working closer, or using a longer focal length lens, depth-of-field can be quite small so focus has to be perfect to get a good result. Outdoors, in daylight, with objects at some distance the depth-of-field will *usually* cover such small focusing discrepancies.I've done a lot of reading on the internet and it seems that this issue with the Nikon D7000 is not isolated - it's probably more common than people realise. At least the camera has the AF Fine Tune so in most cases you can correct the problem.

タグ: nikon, d7000, focus, issues, examples