topic Re: EOS 650 in EF & RF Lenses

Help identifying specific EF 28-70mm lens

Zipper666 — Tue, 08 Oct 2024 12:55:37 GMT

has Canon 28-70 f2.8 zoom NOT marked "ultrasonic" is this an earlier model?

All seen online are so marked

Re: EOS 650

jrhoffman75 — Mon, 07 Oct 2024 11:54:35 GMT

@Zipper666 wrote:

has Canon 28-70 f2.8 zoom NOT marked "ultrasonic" is this an earlier model?

All seen online are so marked

Can you post a photo of your lens?

Re: EOS 650

Zipper666 — Mon, 07 Oct 2024 13:57:05 GMT

excuse quality of image. UB0600 0n rear and 112040 on bottom edge

Re: EOS 650

jrhoffman75 — Mon, 07 Oct 2024 14:09:44 GMT

@Zipper666 wrote:

excuse quality of image. UB0600 0n rear and 112040 on bottom edge

I don't think that’s the f/2.8L version. No red ring Looks like the f/3.5 lens.

Re: EOS 650

deebatman316 — Mon, 07 Oct 2024 14:28:55 GMT

That's an older Arc Form Drive AF motor lens. The reason you can tell is because the date code starts with a "U". Only Arc Form Drive AF motor lenses were made there and nowhere else.

Re: EOS 650

Stephen — Mon, 07 Oct 2024 14:44:09 GMT

The UC600 means it was made in June 1987 at our Utsunomiya, Japan factory.
Based on that, I'm confident that the lens is the EF28-70mm f/3.5-4.5.

Re: EOS 650

deebatman316 — Mon, 07 Oct 2024 14:39:13 GMT

Yes Stephen I have an old EF 70-210mm F/4 lens. It was also made in Japan too. I believe all of these early EOS system lenses were made there.

Re: EOS 650

Stephen — Mon, 07 Oct 2024 14:42:36 GMT

We still make our lenses in Japan. I should have been more specific, so I'm revising the post!

Re: EOS 650

deebatman316 — Mon, 07 Oct 2024 14:45:09 GMT

I was specifically talking about the AF motor type. All Arc Form Drive lenses came from that factory and nowhere else. Even as recently as 2022.

Re: EOS 650

Zipper666 — Mon, 07 Oct 2024 19:58:52 GMT

Thanks to everybody for those useful responses!