My Nikon memory card won't show up on my Macbook Pro? OS X Mavericks?

I was doing videos on youtube maybe 2 years ago and it worked just fine and now i want to start making videos again but maybe its because i updated to OS X mavericks? So when i put the memory card in nothing comes up. Thanks for any help

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Sensor dust on a new camera?

i just bought a Nikon D7100 from Best Buy, brand new, right out of the box, i took some pics and saw some funny specs on the images

so i checked and saw what can only be sensor dust

is this normal? What should i do?

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I want a camera that can take sport pictures like this one?

As you can see in the picture of Jeter batting to what becomes a game winning single against the Orioles yesterday, the ball is clear. I have a Nikon J1 which takes really nice action pictures like this, except the ball would not look so perfect like that. That ball would be super blurry, or it would look like a white line since it's moving to fast. Any suggestions on a camera that can help me take such a beautiful picture as this one? Please and thank you!

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Will Nikon L320 be good for beginner photography?

I heard that bridge cameras are not good for beginning, point and shoot is better than bridge cameras. Nikon L320 is a bridge camera and i wanna buy it, but as I'm a beginner and want to learn photography so want suggestion about this. Moreover if this camera is not good then suggest for a good one which price is nearly of it.
Thanks in advance.

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Nikon Sports Photography help?!

I am currently using a Nikon D60 for basic outdoor sports photography i've had it forever but it gets the job done well enough, my question is will a Nikon D3200 (the camera I'm looking to purchase) produce significantly higher quality pictures or will it be about the same? Is it worth the upgrade in that aspect?

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Should I upgrade my Nikon to a newer model?

I am on my second year of doing portrait photography and I am in need of either updated gear or additions to what I currently have. My camera body is a Nikon D100. I have a 18-55mm, 55-200mm, and a 50mm f1.8 in my bag as well as a sb-50dx speedlight. As you know my camera body is an older model with only 6mp. I don't really have any problems with it, but I have noticed in RAW, after taking 2 quick snaps there is a shutter lag on the 3rd (I hope that makes sense.) I am debating on investing in the nikon d800 or adding to my gear. I feel I am not getting the sharpness I would like to achieve. In your experienced opinion, would the switch be worth the money? Would I see enough improvement in my photography? Do you have another suggestion on a different upgrade that isnt so costly, but gives better resu

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