New d300 just returned to me from nikon service for no meter or auto focus repair which cost 200.00 to repair cause I dont have reciept since it was a gift fo rchristmas now shutter only closes at about 1/20th sec
no mater what setting or exposure is used today is the 2/21/09 and it was returned to me on 2/16/09. Nikon states their repair could not effect this but it worked fine before they worked on autofocus and meter
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Vivitar makes lenses with a variety of mounts. Assuming the lens in question has a Nikon mount then it will fit perfectly well on a D3000. If the lens has a Canon mount, for example, then it will not fit at all.The lens is a manual focus lens, so autofocus will not work. You'll have to focus by yourself.The lens also lacks the electronics to communicate with the camera. You will have to shoot in the Manual exposure mode, setting the shutter speed and aperture yourself, without any help from the camera's light meter.
It's the aperture lever that has to be replaced and NIKON will do it at no cost to you.I just got mine back from NIKON's Melville Repair Center.They are great because they have backed their product and their service and people who work their are excellent!Kudos to NIKON!!!!
Wow, that's weird. Does it do it with the auto-focus switch on the body turned to manual? I shoot a D300 and know pretty much everything about it there is to know and the D700 is basically the same camera with a full frame sensor. The only things I know of that drop CH frame rate are shooting in 16-bit raw and it shouldn't kill it like that, using full-auto with tracking will also cause a lag in auto-focus but that still doesn't seem right here. If it only does it with the auto focus on then it may have trash on the AF screen in the camera and needs to be cleaned. Try setting the body switch to manual focus, remove the grip and shoot jpeg and see if it still happens. If it does, reset the menu settings and try again. If it still does it than you probably need to give it a trip to Nikon. If it quits than start putting things back one at a time until you figure out what is doing it. Somebody told me that Nikon will clean the pro cameras for free once a year while under warranty, I haven't looked into it yet to make sure.
Only reason the lens will not auto focus when you depress the shutter half way is due to either lens AF switch is set to Manual OR camera body's focus system is on M. There is 3 way toggle switch below the synch port around the lens mount. It should be set to C or S in order for auto focus to work. If all the settings are correct and even "AF-ON", next to rear dial doesn't activate auto focus then the issue maybe in the setting or the body itself. As for the buffer reading r27, I think mine displays r## regardless of burst/continuous mode.