maren

In 2006 I bought my D80 Nikon. It came with the 18-135 lens mentioned above. I have been using this lens on the D500 that I just purchased a few months ago. Can this lens in any way hinder the wonderful autofocus options on the 500? It seems like that particular lens focuses in and out many times before locking in on my subject---way more than with my Tamron 70-200 f2.8 lens. (using same settings for both lenses) I guess I am also asking if there can be any incompatibility between any of the older lenses and the great new options on the newer bodies.

MT Shooter Loc: Montana

You are comparing a consumer quality "kit" DX lens to fast FF Pro glass, naturally it will not compare.

WayneT Loc: Paris, TN

Check to reviews on your lens vs the newer 18-140mm Nikon DX lens and see if it has a better tracking and light capability. The reason your lens is doing that is because it cannot perceive enough light to lock on to the subject. Another problem that might be happening is how you use the AF system in the D500 which is very sophisticated. Take a look at Steve Perry's (a member here) book "Secrets To The Nikon Autofocus System" at www.backcountrygallery.com. Best and easiest to read book I have read on the AF system in Nikons and it is heavy on the D500 because Steve uses one for his work.

maren

Thanks. I suspected that. I should have known that, but I needed to hear that.

maren

That makes sense, as I did notice a difference in brighter light situations. I love the range on the old lens and didn't realize Nikon had a newer lens with that range. I will definitely check that out. Thank you also for the reference. I do refer to David Busch's book "Nikon D500" but something specific on the Autofocus system of the 500. Thanks much for your information.