Why is on sensor PDAF drastically slower than traditional PDAF? I assume the technology is the same, doesn't matter if the module is on the sensor or located behind a mirror. But the performance is ...
From this answer I understand that the reflex mirror of a DSLR is actually not reflecting all the light, but it passes a certain amount on to the AF sensor. So if the reflex mirror can pass light, ...
As I understand every DSLR has a separate, smaller sensor that handles phase detection focusing. Where is it located? If this location is different for every DSLR, and therefore this broad question ...
I've been given the following lenses from my neighbour; which ones will fit a Nikon D3100? Sigma 28-200 mm F F3,8 - 5,6 Nikon Af 70-210mm F/4,0-5,6 Nikon Af 28-85mm F/3,5-4.5 Nikon 50 mm F 1.4 Nikon ...
I've bought an Sony A55 camera for home use. Recording video is very important for me. Fortunately this camera is very good in video recording. It records 1080 HD and more important than that it does ...
Why is AF so slow in Live View on SLRs ? On compacts, the AF works very smoothly and quickly.
I had my Nikon D7000 on single-point auto focus and it just would not focus on the spots I wanted. I have marked the spots that could not be focused on with red circles, and the parts that could be ...
My daughter just started playing Tee-Ball and I was out there with my Digital Rebel XT and a Sigma 300mm. I know enough to be dangerous and I was shooting in "Auto mode" with the action preset (the ...