Does anyone have any feelings about non-AI lenses converted to AI? I'm thinking about buying a 24mm f/2.8 non-AI Nikkor that was converted to AI (for an FM2N).
Should I stay away from AI conversions? What does the conversion entail (other than printing a second set of aperture numbers on the lens)?
And anyone have any experience with this non-AI lens?
#1. "RE: AI-Converted 24mm" | In response to Reply # 0JM Registered since 01st Mar 2007Wed 24-Oct-01 01:58 PM
As an owner of an F and a N70 this conversion is on my 'to do list' for a couple of lenses. I found this site with a great description of the process.
The guy who is often recommended is:
and since he is just one state over from me I am considering just going over and dropping them off for the work.
#2. "RE: AI-Converted 24mm" | In response to Reply # 0jstream Basic MemberWed 24-Oct-01 03:25 PM
>Does anyone have any feelings about
>non-AI lenses converted to AI?
> I'm thinking about buying
>a 24mm f/2.8 non-AI Nikkor
>that was converted to AI
>(for an FM2N).
Converted lenses work just fine. I went through Spain with a converted 35mm and my old FM. No problems.
>Should I stay away from AI
>conversions? What does the
>conversion entail (other than printing
>a second set of aperture
>numbers on the lens)?
Most conversions don't print the second set of numbers. Some do (mine did not). I'm told there are also kits available for most nikkors that will allow you to do it yourself (although I don't know anything about these). The conversion actually re-machines one of the parts of the lens so it will couple with the aperture tab on the body.
>And anyone have any experience with
>this non-AI lens?
Just a good old fashioned nikon workhorse.
William A. Rieselbach
Visit my Nikonians gallery.
#3. "AI Converted 24mm" | In response to Reply # 0scooby Basic MemberWed 31-Oct-01 06:40 AM
The only functional difference between an AI converteted lens and an AI lens is that the converted lens will be missing the Lens Speed Indexing Post , which is located behind the lens mount on AI lenses . This is only an issue if you intend to use Matrix metering with the FA or F4. Otherwise, go for it . Not an issue with the FM2.
#5. "RE: AI-Converted 24mm" | In response to Reply # 0
I'm a camera salesman. I recommend you stay away from
non-Nikon authorised conversions. Cheapo conversions are usually just filing-out a notch on the f/stop ring, (so the
AI pin can index the lens).
Proper conversions ADD a curved ridge to the lens, the 2nd set of f/stop #'s, and a new set of rabbit ears w/ cut-outs.
Cut-outs in rabbit ears are so you can actually SEE the second set of #'s in viewfinder of many Nikons.
As to the lenses themselves, NAI Nikkors from the 60's and early 70's are very rugged and well made. Optical quality tends to be very high on most. However, AI and AI-S lenses
from the late 70's to present are generally better. This is due to modern lens coatings. Are also smaller and lighter due to
newer technology,(ie. thinner lens elements).
In general, the 24 f/2.8 is a true classic in any version.
Good Luck !