Having proper focus in an image is imperative. No one wants an out of focus picture of themselves or a family member, same goes for other types of photography. This is one of the basics, so you need to get it right all th time. In my video I go over how to use each mode, why you shouldn't focus then recompose & how I focus. You can also find out what the 1/3-2/3s rule of focus is.
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Comments
Your tuition is class leading. keep it up
One Shot = Single Point AF
AI Focus = Dynamic Area AF
AI Servo = Auto Area AF
Canon to Nikon Point Selection
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Single-point AF / Single-point Spot AF = Single Point AF
AF point expansion / Zone AF (only high model Canons) = Dynamic Area AF
Automatic Point Selection AF / x-point Automatic Selection AF = Dynamic Area AF
(No equivalent in Canon that I am aware of) = Auto Area AF (see http://www.nikonusa.com/en/Learn-And-Explore/Article/ftlzi4po/af-area-modes.html)
Canon to Nikon Focus Mode
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One Shot = Single Focus Mode
AI Focus = (Possibly nothing the same on Nikon - hybrid mode, starts in One Shot, switches to AI Servo if necessary)
AI Servo = Continuous Focus Mode
It really bothers me, but I can work around it. Though, I surely hope that whenever I'm buying a pro nikkor lens, I will not have these problems.....
On the matter it self, I also use single focus points. This comes from me being accustomed to the D60's 3 point af. For sports I use the dynamic af and I have to say that it also works great.
Other than the 50, I have a sigma 8-16mm & sigma 70-200.
The wideangle is great! No bad words about this lens. I even used it at a concert and it worked like a charm. (many people say the 8-16mm is to0000 slow)
The 70-200 is never super sharp(imo). Maybe that's the characteristics of this lens. It does not show the same problems as the sigma 50mm.
I am thinking of buying nikkor lenses in the future. Do you think the IQ and AF of nikkor lenses will blow my mind??
My one critique with the videos though, is that maybe you should have more visual things to demonstrate it.
Like if you were to show a picture focused correctly, then show one when it's been focused and recomposed. Then point out the differences within the image and show us how you shoot them.
I have a nikon D5000 and sigma 70-200. I have problems in getting focus in group shots. One subject is good. but when there are more than two i have problems in focus.
As I explained to someone the other day, try shooting in manual exposure. Set your shutter around 1/200th or higher, wide open aperture then set the ISO to match the lighting. Shoot a few, checking your histogram once in a while to be sure its ok. Also watch the brightness of the scene, if the light changes your exposure should too. Keep your shutter/apertur e the same, only adjusting your ISO.
Thanks for the tips. I was confused about focusing and recomposing because I tried that and I was not getting sharp images.
e.g. http://www.flickr.com/photos/29878460@N07/8640884193/ the focus is clearly on the dogs shoulders.