Ok I've worked out what I want
A camera.
105mm macro
A prime lens 300mm or above
Nikon don't do some of the smaller primes Canon do. If you want a Nikkor lens then these are the options:
300/4 - £969
300/2.8VR - £3978
400/2.8VR - £6514
500/VR - £5739
600/4VR - £6927
All prices WEX. So, if you want IS/VR, the cheapest option is £4000
What is your budget on this Sarah? How much can you afford to throw at this, either swapping to Nikon or sticking with Canon?
So which Nikon Camera are you looking at? D90 or D300?
I used to be indecisive..now I'm not so sure!Does it have to be Nikkor Lenses? Would yo consider a fast Sigma like the 120-300 F2.8 (cracking lens by the way).
Does it have to have VR/OS?
I just did some guesstimates and it looks like its a Canon Body.![]()

Excellent questions Barnie which the OP hasn't answered. However, if you don't need VR/IS and a Sigma 120-300 will do, then that will get a stop more light than the Canon 300/4 on the 50D I'd I'll be willing to bet my mother that there isn't a stop of light difference in performance between the 50D and D90...

Personally, I would have a look at the 7D and see if that sways you or if you have..:shrug:.
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£500 max on top of the sale of all my gear to swap to Nikon.
£500 max on top of the sale of the 50D to get a different Canon body.![]()
Here's an example at ISO 400
http://www.flickr.com/photos/sarahlefley/3884543994/sizes/l/in/set-72157622231772844/
That's quite remarkable, are all 50D users seeing this same level of noise at ISO400, as that doesn't look right?I can see why you are disappointed.
As an example, here a full frame jpg converted from a raw file from a D300, at ISO800 with noise reduction turned off in my processing software to get as fair a comparison as I could (converted to a quality '85' jpg by the GIMP):
http://www.bluelion.org.uk/forumImages/talkphotography/full_frame_robin_iso800_no_noisereduction.jpg
I've been a bit negative about the D300 recently, especially after seeing some of the more recent Canon output from the 5DmkII and 7D. I think its time to take it all back, thanks for the thread!
Excellent and spot on advice.Hi Sarah
IMO you need to sit and really think hard about why you want to change, what is it about your canon 5D you don't like ?
Will switching to some other brand 'fix' that problem or not ?
Then ask yourself what will it cost me (time and money) to switch and will I lose anything i really like ie Must have.
I am a long term nikon user with a huge amount invested in both lenses and ancillaries, I believe if you are in either the nikon or canon or other quality brand then you would be hard pressed to find a real technical benefit for switching at a realistic price.
Although I would say that at present the D3 and D700 have an advantage in low light performance but I'm sure Canon will counteract that, indeed they may already have done that. I don't think switching will make anyone a better photographer so if you look hard at why you want to do this you may well find its just a distraction.
You can't really compare this image with the one squizza posted. Her's was a full frame picture, yours is a downsized one.That's quite remarkable, are all 50D users seeing this same level of noise at ISO400, as that doesn't look right?I can see why you are disappointed.
As an example, here a full frame jpg converted from a raw file from a D300, at ISO800 with noise reduction turned off in my processing software to get as fair a comparison as I could (converted to a quality '85' jpg by the GIMP):
http://www.bluelion.org.uk/forumImages/talkphotography/full_frame_robin_iso800_no_noisereduction.jpg
I've been a bit negative about the D300 recently, especially after seeing some of the more recent Canon output from the 5DmkII and 7D. I think its time to take it all back, thanks for the thread!
Someone mentioned over exposing a bit, in order to get noise clean image. That is correct. Switching to a different brand will not solve your problems, the problem might be your technique.
Please don't take this as an attack, I am only trying to help. I would say go for the 7D and learn how to properly use it. You will be happy with it.
I know, I'm useless! I wouldn't go that far.I know, I'm useless!
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I wouldn't go that far.
Seriously, I have heard in the past people complaining about their gear and how bad results they get but most of the time, it is a user fault.
Hmmm. Just viewed the photo you posted of the ISO 400 shot which I too would be slightly perturbed about, my 400D doesnt show noise at ISO 400. A bit concerning for me as I was planning (and very much looking forward to!) purchasing a 50D next month!
It does seem strange, that seems like a lot of noise for ISO 400 especially for a prosumer body. I take it this is before any sharpening or any significant PP'ing?
One thing to watch, is that a lot of people aren't that impressed with the D300. There is noise at base iso - you need to check it out before definately deciding to swap.
I myself have sold two D300 cameras because I was disappointed with the IQ. Why I bought the second I will never know. I met another member from on here today who said exactly the same.