Nikkor lens w/ large DOP?

Which Nikkor lens (Under $675) has the largest DOP, and good for macro photos?

I recommend you looking at either the 35mm or 85mm f1.4 Rokinon lens on Amazon. It's as sharp as an L lens. It's full time manual, but easy to get used to.

Do you mean DOF (depth of field)? If so, consider that DOF is a function of a lens' focal length and the aperture used. As focal length decreases and the aperture gets smaller, you will have greater DOF, ie more will be in focus. Any lens can be stopped down to increase DOF, but wide-angle lenses will have greater DOF at all apertures. Try the "Camera Simulator" I posted a link to below; it will help you understand the effects of aperture and focal length on depth of field.

The majority of macro lenses are not wide-angle, for a simple reason: A wider lens requires that the subject be closer to the lens to get high magnifications, which is not always easy or practical.

However, Nikon makes a 40mm f/2.8G lens with a max 1:1 magnification (at 6.4 inches from the subject), and it costs less than $300 http://www.bhphotovideo.com/..._AF_S.html
(I assume you're using a crop-sensor DSLR, but if you're using film or full-frame, Nikon's 60mm f/2.8D would be roughly equivalent to the 40mm on DX, at a slightly higher cost)

I'll guess that you meant DOF - Depth of Field.

You're actually asking two questions which aren't exactly related. They are, instead, somewhat opposite.

A true macro lens like the AF-S Micro Nikkor 60mm f2.8G ED or the AF-S DX Micro Nikkor 85mm f3.5G ED VR will give you a full 1:1 (life size) reproduction ratio which is what you want with a macro lens. However, at such close focusing distances your DOF will be very shallow.

A lens that allows you to achieve maximum DOF is going to be a wide angle such as the 18mm end of your 18-55mm zoom or even wider.

Now is as good a time as any for you to learn about DOF.
http://www.cambridgeincolour.com/...-field.htm

There are only three factors that affect your DOF:

1) The focal length of the lens.
2) The aperture used.
3) The subject distance.