The only argument I have seen mentioned is that some lenses are optimized for crop sensor cameras,& that the image will be sharper in the centre of the frame.
When in a hide the other day I asked if the Canon 5D mk3 was any good for bird photography and was told "No it's full frame".
Not wishing to appear ignorant I didn't query this.My 7D has a 1.6 crop factor but why is full frame no good for bird photography.
Max
I agree with John here, I am the 7D's biggest fan having shot one for several years but I now shoot a 5D3 and it is in a different league IMHO - apart from nicer saturation and contrast it is at least 2 stops better when it comes to high ISO noise levels (easily useable at ISO 6400 and even higher with a bit of PP work). Another thing to remember is that it also AF's at f8. So with a lens like the 400/5.6 for instance you can shoot with a 1.4x tc attached and still Double your shutter speed.Don't ask that person for advice again!
The only advantage that I know of, on a 1.6/1.5 sensor, is the narrower field of view which makes lenses look longer. This does not translate into 1.6 times the reach sadly. There are other factors to consider such as ISO performance, for example earlier today a photographer was bemoaning having to use ISO 2000 and mediocre shutter speeds whilst trying to get shots of a Kingfisher. I was happily snapping away at ISO 6400 and 1/1000 sec and getting cleaner images. The longer perceived reach is nice but it is not everything - far from it!
The 5D3 is an excellent all round camera with very good high ISO performance - you would not be disappointed with one! You will have to get a bit closer (not as much as you may think) but you would be rewarded with better images.
.
Thanks all for your replies.
I will now certainly consider buying a 5D mk 3 when my 7D gives up the ghost (It's currently in for repair with the "cannot communicate with the battery" error).
I will also hold my own now if if "full frame" comes up in a conversation.
Max.
Don't forget to try out a 1D4 before you decide - it would be my vote over a 5D3 for wildlife. If my primary interests were outside the sports/wildlife arena then I think the 5D3 is a better camera.
Just my 2p
I have had a full frame camera (1dx) now for just over 2 months and have not touched my 1.6 (50d) or 1.3 (1d1v) sensor camera since.
It took me some time to get a full frame camera and my only regret is that
i never got it sooner.
Go for FF! My dream but out of my financial reach for now. As Roy said, your 400mm 5.6 can take a 1.4x TC with FF without any problem
Than you sure have lost a few mm's opposed to the crop sensor camera's when using your lenses . The 1dx has the same amount of MP as the 1d mark 4 so i can not crop the image more with the 1dx to get the same image as my 1d mark 4.
So i wiat until a full frame with let say around 30MP.
If you think that MP is the only thing that matters than why have you got the 1D4 (16.1MP) and 1.3 crop when you could have a 7D (18MP and 1.6 crop)????Than you sure have lost a few mm's opposed to the crop sensor camera's when using your lenses . The 1dx has the same amount of MP as the 1d mark 4 so i can not crop the image more with the 1dx to get the same image as my 1d mark 4.
So i wiat until a full frame with let say around 30MP.