New answers tagged focus
The AF confirmation actually works on a very similar principle to the old focus screen, in that they compare two different optical paths in order to determine exactly how in or out of focus the image is. The exact technique is different, but they accomplish the same end goal. The only difference is a computer is comparing the sides of the circle for you. ...
With this chip, you will, when you half-press the shutter, get the red dot in the viewfinder and the beeping as confirmation of focus, just as if you used a modern AF lens in manual focus mode. But, if you long for the split screen focussing aid, there are third-party focussing screen replacements you can install in your camera. (just for a quick example: ...
I tried this experiment: Stand in one place Turn my iso as low as it will go (200) Set my aperture as wide as possible (f/3.5) Take a picture Step my aperture one smaller, change shutter speed to compensate. Repeat 5 and 6 until I hit the smalles aperture (f/22, in my case) Turn my ISO to 11 as high as it will go (1600 in my case) Work my way back down the ...
From the comments, it seems like this is your problem — you're probably focusing past infinity. See Why do some lenses focus past infinity? Or, if you're not turning the ring all the way and instead relying on the marking, it may just be that the marking isn't precise enough. Try the suggestions at Where to focus when shooting landscapes? instead.
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