What mount is this?

antonio.am.99.svq · 02-26-2021, 05:13 AM

Hello. I have bought an old lense and I don't know if the mount is Canon FD or Pentax K. Could you help me? Thanks!

**boriscleto** · 02-26-2021, 05:37 AM - **1 Like**

Nikon F mount, AI.

**marcusBMG** · 02-26-2021, 06:27 AM

+1 Nikon, , looks like the "prongs" have been cut off.

FYI
http://rick_oleson.tripod.com/index-99.html

**boriscleto** · 02-26-2021, 06:35 AM

Originally posted by marcusBMG

+1 Nikon, , looks like the "prongs" have been cut off.

FYI
SLR Lens Mount Identification Guide

No, they're there.

Wasp · 02-26-2021, 07:26 AM

Originally posted by boriscleto

No, they're there.

Indeed they are, but you have to look carefully.

Any lens with those can only be Nikon F mount.

**marcusBMG** · 02-26-2021, 08:10 AM

The prongs usually look like this (pic).

They look like they've been trimmed on the OP's lens!

hayuata · 02-26-2021, 08:43 AM

One of the quickest giveaways is the bunny ears that is near the aperture ring that only Nikon mount lenses have ( talking vintage of course

).

The second reasoning that I know it is a Nikon lens is that you can see how from the rear, on the top left, there's a raised portion of plastic ( this gives away at minimum, it is an AI spec, or Auto Indexing ).

**boriscleto** · 02-26-2021, 10:06 AM

Originally posted by marcusbmg

the prongs usually look like this (pic).

They look like they've been trimmed on the op's lens!

Name: Screenshot 2021-02-26 at 12.03.37 PM.jpg
Views: 206
Size: 105.7 KB

They don't look trimmed to me.

Sidney Porter · 02-26-2021, 11:52 AM

On my phone the size and the lighting / reflection they looked trimmed. Going back and looking at the op and tilting my phone I can see they are there

**marcusBMG** · 02-26-2021, 01:01 PM - **1 Like**

trick of the light ...

pentasonic49 · 02-27-2021, 09:04 AM

I also missed the prongs at first, on a 27" 2560 x 1440 IPS screen. They are the easiest givaway. I have often wondered why Nikon fits and removes lenses the opposite way from everyone else.

hayuata · 02-27-2021, 03:24 PM

Originally posted by pentasonic49

I also missed the prongs at first, on a 27" 2560 x 1440 IPS screen. They are the easiest givaway. I have often wondered why Nikon fits and removes lenses the opposite way from everyone else.

Goes back all the way when the Contax rangefinder mount was copied by Nikon for their rangefinders (also later on by Kiev)

. I guess they stuck with the counter-clockwise mounting method when they made the Nikon F.

02-26-2021, 05:13 AM	#1
antonio.am.99.svq New Member Join Date: Feb 2021 Posts: 2	What mount is this? Hello. I have bought an old lense and I don't know if the mount is Canon FD or Pentax K. Could you help me? Thanks!

02-26-2021, 08:10 AM	#6
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,870	The prongs usually look like this (pic). They look like they've been trimmed on the OP's lens! Attached Images

02-26-2021, 08:43 AM	#7
hayuata Forum Member Join Date: Sep 2018 Posts: 56	It's a Nikon (Nikon AI lens) One of the quickest giveaways is the bunny ears that is near the aperture ring that only Nikon mount lenses have ( talking vintage of course ). The second reasoning that I know it is a Nikon lens is that you can see how from the rear, on the top left, there's a raised portion of plastic ( this gives away at minimum, it is an AI spec, or Auto Indexing ).

02-26-2021, 10:06 AM	#8
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,477	Originally posted by marcusbmg the prongs usually look like this (pic). They look like they've been trimmed on the op's lens! They don't look trimmed to me.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Difference between K mount and M42 mount 15mm/F3.5 (with aspherical element)	borneo1910	Pentax SLR Lens Discussion	15	07-13-2019 10:51 PM
RMC Tokina 75-260mm w/ Canon Mount - Chances of Finding a Donor K Mount?	Dale H. Cook	Pentax SLR Lens Discussion	7	05-11-2019 10:03 AM
K-Mount or A-Mount to E-Mount Adapters with AF?	reivax	Canon, Nikon, Sony, and Other Camera Brands	5	01-01-2015 09:35 AM

02-26-2021, 05:37 AM - 1 Like	#2
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,477	Nikon F mount, AI.

02-26-2021, 06:27 AM	#3
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,870	+1 Nikon, , looks like the "prongs" have been cut off. FYI http://rick_oleson.tripod.com/index-99.html

02-26-2021, 06:35 AM	#4
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,477	Originally posted by marcusBMG +1 Nikon, , looks like the "prongs" have been cut off. FYI SLR Lens Mount Identification Guide No, they're there.

02-26-2021, 07:26 AM	#5
Wasp Pentaxian Join Date: Mar 2017 Location: Pretoria Photos: Gallery Posts: 4,663	Originally posted by boriscleto No, they're there. Indeed they are, but you have to look carefully. Any lens with those can only be Nikon F mount.

02-26-2021, 11:52 AM	#9
Sidney Porter Veteran Member Join Date: Feb 2012 Location: Columbus Ohio USA Posts: 353	On my phone the size and the lighting / reflection they looked trimmed. Going back and looking at the op and tilting my phone I can see they are there

02-26-2021, 01:01 PM - 1 Like	#10
marcusBMG Site Supporter Join Date: Nov 2012 Location: North Wales Photos: Gallery \| Albums Posts: 2,870	trick of the light ...

02-27-2021, 09:04 AM	#11
pentasonic49 Veteran Member Join Date: Oct 2012 Location: weston-super-mare Posts: 395	I also missed the prongs at first, on a 27" 2560 x 1440 IPS screen. They are the easiest givaway. I have often wondered why Nikon fits and removes lenses the opposite way from everyone else.

02-27-2021, 03:24 PM	#12
hayuata Forum Member Join Date: Sep 2018 Posts: 56	Originally posted by pentasonic49 I also missed the prongs at first, on a 27" 2560 x 1440 IPS screen. They are the easiest givaway. I have often wondered why Nikon fits and removes lenses the opposite way from everyone else. Goes back all the way when the Contax rangefinder mount was copied by Nikon for their rangefinders (also later on by Kiev) . I guess they stuck with the counter-clockwise mounting method when they made the Nikon F.