What is the use of MF lenses - Nikon 18-70mm f/3.5-4.5G ED-IF AF-S DX Zoom Nikkor Lens

That is going to have to be sent back to Canon for repair.

Can you be more clear with your problem . When you are facing this problem ?

Have you done basic troubleshooting techniques like replacing new batteries, gentle tapping on camera

Here's an interesting website with a lot of informations about MC, MD and other Minolta lenses, also informations on adapters for new AF bodies: http://www.sds.com/mug/mf-lenses.html

The "MF" in "Sigma MF 500mm f/7.2 APO" designates the lens as manual focus.

AF=Auto Focus. With an autofusu capable body, the camera will automatically focus for you using preset focusing zone. Move the Switch to:
MF and it becomes a manual focus lens, where the photographer has to manually focus on his subject.

The Sigma 70-300mm f/4-5.6 DG will not autofocus with the D40 since the lens does not feature an internal focusing motor (HSM). The D40 does not have an AF motor in the body and hence it can autofocus only with lenses featuring an integrated motor (eg. Nikon AF-S lenses, Sigma HSM lenses, Tokina DX II series etc). Unfortunately you can use the said lens only in MF mode.

The D40 has a AF / MF switch next to the lens.. It may have been moved to the MF (Manual Focus) position or in-between the two settings.
Move the switch back and forth to both settings a couple of times and then set it to AF (Automatic Focus).

Not sure if you have other lenses, but this is the solution if you only have this lens or it's the only one you cheched.

Hope this helps!

You are able to use your old OM lenses with a new Olympus digital SLR camera. You will need to purchase an MF-OM 1 lens adapter to be able to connect these lenses to the digital SLR camera. Also when using these lenses you will only be able to use the camera in manual focus mode as these lenses are not capable to shhot with an auto focus mode.

Virtually all the old Minolta lenses are compatible with the new Sony SLRs.

For the two you mention, you will need to check whether the lenses are the AF or MF versions.

Both will fit, but AF is the auto-focus one, and MF is (obviously!) manual-focus.

If you want a definitive list with tech details on ALL the Minolta / Sony lenses, look here:

http://www.mhohner.de/sony-minolta/lenses.php

Matt

Tullio,

Olympus 4/3 adapter will work with OM lenses.
All in manual.
Manual focus, zoom and F stop.

[email protected]