I need advice about a Nikon adapter ring?

You may've struck lucky this time - sort of.

While it's true that you need the lens' mount, with this it's relatively easy, as the only lenses of this type you're likely to come across are Pentacon B (a bayonet mount with a shiny back-plate and three gold contacts - the adapter is stupidly rare) or M42 screw mount (a black-finished screw thread with a pin at the 6 o'clock position). Praktica actually invented the, "Pentax Screw," mount, and Zeiss DDR were a subsidiary of the same company that made lenses for them.

Now for the bad news;

Nikon's notoriously narrow lens throat means that even M42 lenses need a corrective element, turning your lens into a 200mm f4.5 that allows neither metering nor autofocus on your camera. It just isn't worth the hassle.

Take advice from Fhotoace. Take your camera and the lens to a good camera shop and see what they can do for you. There are so many possibilities to get things wrong that only visual and mechanical matching can guarantee a workable combination.

But don't be surprised if the shop says that there is nothing practical to help you connect that lens to that camera. That is often the case; or it might be very expensive; or the combination might not work well. As Fhotoace says, that lens is actually a M42 screw mount, really not intended for advanced cameras such as your Nikon, and in fact manufactured many years (decades?) before cameras had advanced functions within them.

Sorry to sound so negative, but you had best be prepared for a non-result.

Big chance your sonnar will be m42 mount (big round screw mount). That cz sonnar is really good lens regardless it is fully manual. So just get m42 to nikon f adapter.

There is two type of adapter for it. The one with correcting lens in the adapter to achieve infinity, and the other is without, you only can shoot in short distance, no ability to reach infinity.

The catch, if you using the one with extra lens, you iq will decrease, and sometimes quite significanly.

Using the one without as i told you, it wont reach infinity, prolly only reach 5 to 7 meter max or less even. But minimum focus distance will be much shorter.

This is because of the register distance is different.

For this you can adjust your lens to be able to reach infinity or near infinity (since you use tele) by unscrewing the back element of your lens and put something or glue it to make it not move.

Get an subject maybe about 30 meter from you, Unscrew the back element bit by bit until u can focus on your subject clearly.

Even if you cant achieve infinity, at least you can reach the most farthest subject you will shoot with this lens, and get benefit from shorter mfd.

We can't tell you want you need because we don't know the mount of your lens. You can do two things. Take a picture of the rear end of the lens and post it here or bring the lens to a camera shop and ask them to identify it for you. While at the store, you can buy the right adapter for your camera already so bring that one too so you can test it.

It's not worth the trouble.

Be Much more specific so that someone can help you.