With all due respect, if you need to ask whether your 18-55 mm kit lens will work, I have a strong hunch all of the cameras you've proposed are not right for you.
What is your current equipment? Only the 1000D + 18-55 mm kit lens? In what ways do you find it limiting? If you only have the kit lens, updating your body is not the right thing to do. Instead, you should invest into glass and an external flash. Both will do a lot, lot more to give you more creative freedom than to take a cheap lens and put on a cheap lens.
So what's your current equipment?Im not intending on using the kit lens on such a high end camera. I was told by a friend that you can only use some of the high end lens as it is full frame.
You currently do "a lot" of this with just the Kit lens? You know nothing of the "in between" cameras like the 50D, and 7D which would be already a huge step up for a LOT less than even the 5D MK2. You want to jump from a 300 USD camera to a 2000+ or 4000+ camera? .. for what reason? Do you have THAT much money to burn? Because the next thing , for those subjects you shoot " a lot " of, you will need a wide Angle, and a medium telephoto (like the 85mm f1.2L) lens AT LEAST. And they have to be REALLY good glass in order to bring out the quality of the camera(s). So you are looking at a grand total of about 5-8000 USD.I do alot of HDR stuff, landscape, portrait and product stuff
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Do you really need video? As a multi-media student I can believe that you do. The best upgrade would be the 7D, it'll still take your kit lens until you get a solid L wide angle, and it'll do video. The 5DII will show every flaw in your lenses, and as it stands right now you don't have a worthy piece of glass to put on it. The 50 1.8 makes the cut barely. 21MP is a HUGE file, to give you an idea, a full 21MP image from the 5dII spans across TWO 30" displays with pixels to spare on the side - it picks up details you'll never see with your eyes. And if you have a cheap piece of glass in front then all those details will look like *****.
Stay below $2K or whatever currency you're using; so that means 50D or 7D. Spend the rest on good glass. Your current lens lineup is holding you back on picture quality more than the camera is.
Im a Bsc Hons Multimedia university student and my course is heavily based on Photography.
As I get student loans/Grants from the government this allows me to buy equipment for my course.
Im just trying to get the best camera for the money really!
Also Im just tired of my old plasticy 1000D
Here is some of my HDR work. - let me know what you all think!
21MP is a HUGE file, to give you an idea, a full 21MP image from the 5dII spans across TWO 30" displays with pixels to spare on the side - it picks up details you'll never see with your eyes. And if you have a cheap piece of glass in front then all those details will look like *****.
Im just trying to get the best camera for the money really!
Also Im just tired of my old plasticy 1000D
Iv just bought a Canon 50mm 1.8 II lens
Unless the plasticky construction is hampering your ability to shoot (read: dropped it and it broke, or lack of weather sealing affecting your ability to shoot in some environments) then it seems like your complaint is superficial and spending upwards of $3000-5000+ on a body to fix that "plasticky feel" using loaned money is not a very smart decision.