Using electronics abroad? (Europe)?

I'm going to France for 5 months and I'm taking my $600 camera along with me (along with other electronics: video camera, computer (mac), and hair dryer and straightener)

For the mac I bought the travel pac that apple sells so I'm pretty sure that is all i need (if you could confirm this for me that'd be great. I think the big white thing on the end of the plug is a converter for the laptop.)

I also THINK (please confirm) that my camera (which is a Nikon d3100) has an automatic converter.
To charge you take out the battery and plug it into the wall (the plug that I use is very large and I believe all I need to do for that is buy a $2-3 plug that allows me to plug it into a outlet in Europe.

Same thing as my camera for my video camera. My video camera is a Kodak Zx5 and the outlet is a lot smaller than my $600 camera, but there's a thing on the end of the plug that I believe is a converter for currents. Please confirm.

Now for my hair dryer and straightener, these are the 2 things that do not have a large 'thing' on the end of the cords, it's just a wire and the prongs on the end, no box. So are these the only things that I will have to buy 1 of those big expensive current converters for?
Or should I use the current converters for everything?

Look at the power chord (box) on each of the items you mention above. The camera, video camera and PC should all say 110v - 240v which means you can plug them directly into the wall with the proper outlet converter but no need to convert the power.

Your hairdryer and other thing do not have that and if you read the plate on them it will say only 110v which means if you plug them into the wall (which is 220v) they will fry. You can buy a step-down converter from Amazon (less than $20) which will allow you to plug these in and also from Amazon you can buy a universal plug converter for about $5.00 that will make the other things chargeable.

Have a good trip.

As said in the first answer, your camera charger and mac likely have the mention 100-240 on them, if so, you just plug them in, you might need a plug adapter that changes the shape of the plug, the mac might even already have it.
The blocks on the leads change the 110 volt from the wall outlet into 12 volt, or something like that, the camera can use. Most of those blocks can also handle 230 that is the standard in Europe, but do read the texts well, as not all can.

But your hair things, if they do not have the 100/240 mention, do not bring them.
Yes, you can get a converter that changes the power to what they can use but the good ones are very expensive and the cheap ones can't handle the amount of power needed.
It will be cheaper and easier to buy new hair tools in Europe.
Near the 100-120 volt mention you will also see a watt mention, if you really want to bring your dryer and straightener with you, go to a shop and ask for a converter which can handle that much wattage.

It will be better for your hair and easier on your time just not to use them, but I understand that fashion might not allow you. (Ignore fashion, nobody will blame you.)

Do NOT use a converter for everything, camera, computer and phone chargers work better on the 240 volt if they can handle it.
You could use one extension lead with an European plug and several spots for American plugs, but you will have to be very careful, first of all, the system is not build for 240 volt and secondly, if you have any thing with you, or a friend visiting, that is not able to handle 240 volt you will fry it and possibly your room with it.

Of course you can use those electronics here. And you can always buy an adapter of any type.

Generally speaking laptops cameras and other electronics are designed to work with both US (110) and European voltage (220-240) but check the details - my camera charger has the voltage range printed on it. You only need a plug converter to adapt the shape of the prongs to a European outlet. The hair dryer and straighteners are different if you attach these to 220 V they will burn out in a dramatic way unless they are specially designed for traveling. You will need a voltage converter or new appliances or manage without.