Is this the correct adapter?

Started 2 months ago | Questions thread
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sza85 Forum Member • Posts: 66
Is this the correct adapter?

Hi!

I would like to purchase a Takumar 200mm f/4 (recommended by many for astrophotography) to use with my Nikon D5500 with a tracking mount.

As far as my knowledge goes, these lenses have M42 mount, but on Ebay I see some seller says the mount is "Mount: Pentax 6x7,67,67II"

If it's M42, I would go with this adapter (to have infinity focus): https://goo.gl/iMmFGU

So my questions are:

- Are these lenses come with multiple mounts? If yes, are there any differences in terms of image quality?

- Are these lenses have M42 mount, and if yes, will the adapter linked above be good?

- If it's not M42 mount, which adapter should I use? (or should I simply purchase a lens where the sellers says the mount is M42?)

Thanks in advance, and sorry for the noob question, this will be my first not Nikon F mount lens.

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Nikon D5500
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