Aperture doesn't change on Nikon D90, using 24-70mm 2.8 VR?

Aperture doesn't change on Nikon D90, using 24-70mm 2.8 VR?
Added (1). Hello, I own a Nikon D90, and the stock lense doesnt have a problem changing the aperture, but I have recently bought new lense, 24-70mm 2.8 VR, the aperture doesn't change. It says that it's compatible, Please help. Thank you

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Nikon D3100: how to save setting in scene modes?

Hello,

I have got a Nikon D3100 and I cant seem to figure how to save and keep settings I make in those default scene modes such as landscape or portrait. The greatest nuisance is I set a certain AF area mode (viewfinder) but after turning the menu knob to different mode it returns to its original setting. Could anyone please advise me on how to save those settings? It wouldnt bother me much if the multiple point area / automatic focus area always didnt come back in the landscape mode. I want to shoot with single point AF when snap mountains for instance.

thanks a lot.

jirikoo

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Does the Nikon D3100 camera have good video quality?

My parents recently got me a Nikon D3100 so I can start taking pictures and recordeding things. I've taken pictures and I'm getting better everyday, but I have yet to try the video option on the camera and I'm really wanting to. I'm just wondering is the video quality decent, good, great even? (Don't really care about the sound quality yet) I'm wanting to get into cinematic videos of cities, lakes, cars wildlife and things like that, mostly outside stuff. I'm wanting to document this cinematography on YouTube so I want the quality to be good for the viewers. I saw a video on the Nikon D3100 and the person in the video said it would be best to buy a better lens for the camera other than the one it came with, which really scares me because I don't have any money really, especially to spend on an expensive item like such. If you have ANY advice on how to make good to great quality videos on this camera (using the lens the camera came with) please let me know! And if you have any idea of what to put the settings on to make great quality videos let me know that as well!

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