Цитата:от:AleXa
получается, что подстройка AF в камере самим пользователем - на сегодня это просто профанация:
Маркетинг, мать его так ..., по сути неработающая фича, значит реальная юстировка опять только в сервисном центре 
Подробнее
Это эмоции.
В реальности функция работает и в большинстве случаев позволяет решить проблему. Как говорится, лучше зажечь одну свечку, чем сидеть в темноте. Кроме того, обратите внимание, что эта функция называется не устранением ФФ или БФ, а
тонкой подстройкой автофокуса.
Подробности по подстройке автофокуса:
AF Fine-tuning.
If we've discovered anything reviewing lenses on SLRgear.com, it's that lenses and bodies don't always match. Sometimes they focus in front of the subject, sometimes they focus in back of the subject. Camera companies are starting to acknowledge this, building in adjustments to compensate for front- and back-focusing problems. The Nikon D300 has a new system that just does that, but unlike the D200 it doesn't just work for the body side of the equation. Sometimes it's the lenses that are out of tune too, so adjusting just the camera's AF to work well with one lens won't solve the problem with another; indeed it can make other lenses worse.
So the Nikon D300 has a new system called AF fine tune, where the camera can store adjustments for up to 12 lenses. Not individual lenses by serial number, mind you, but at least by type. If you have only one of each type of lens, say a 50mm f/1.4 and a 100mm f/2.8, you'll have no problem. But a photo team that has several of one type of lens, like a few 300mm f/2.8Gs for shooting road races, will have to be careful, because the camera will only load compensation information for the lens that was mounted when the compensation was initially set for that type of lens. Nikon has included a half-measure for such problems, allowing you to input the last two digits of your lens's serial number so you can match the camera to the lens. Initially, we hoped this meant that you could put another lens on of the same type and enter that serial number so you could store two values, but it seems like the identifier number is only for reference: a note that allows you to make sure you've attached the right lens of a given type.
I ran into just such a problem when I got hold of the Nikon D300. Cameras very often come to me with all the settings the Lab used last still in memory. I do my best to clear them, but it turns out that AF fine tune doesn't change when you reset all (which makes perfect sense). So I had a lot of trouble with back focusing issues on some family shots I took one weekend, and only discovered the following day that the particular lens I used had been adjusted to +20 in one of the Lab tests, and that setting was never cleared. I'm glad we discovered it, because I was about to spiral into a long analysis of what might be wrong with the AF system.
за подробную информацию ..., но :? 
, неужели, если уж решили дать пользователям возможность самостоятельно подстраивать AF, не могут дать эту функцию в полном объеме, а не "обрезанную" по самые ....
?
