<p>I have several large lens that have mounting brackets Nikon 80-400, 70-200. I also have a tripod and mono-pod that has a quick release attachment that attaches to the camera and then to the tripod. Does it matter which method I use?</p>
<p>I have a Nikon D600. I've had it for about 1 and 1/2 years. I haven't shot over 500 pictures. How many, on the average, pictures will I have to take before the oil and dust issue appears?<br> Bob Corby</p>