02-21-2013 04:31 AM
02-21-2013 08:00 AM - edited 02-21-2013 08:37 AM
02-21-2013 10:31 AM
Thanks for your answer.
But how do they compare in terms of autofocus speed?
I will mainly use the centre point.
02-21-2013 12:33 PM
AF speed is a bit dependent on both the body & lens but in general the 7D is far better suited to action. I've used a 7D to shoot radio control flying events for the last 3 seasons with a very good keeper rate. I have not used the 6D nor researched it much but I know it hasn't got the same AF as the 7D.
Re the 24-105 f4 or 24-70 f4 I'd recommend the 24-105 for the extra range it offers since both are f4. and will have the same DOF etc on whichever body you choose. Where you might run into a (minor) problem with your shopping is an ultra wide in a L. The 17-40 or 16-35 L aren't really very wide on a crop body so the 10-22 or 12-24 lenses become a bit of a must in several situations where you really need that WIDE FOV.
02-21-2013 03:20 PM
If you plan on shooting your kids indoors with available light, the 6D wins hands down. It will have a lot less high ISO noise than the 7D at comparable ISOs.
02-21-2013 06:20 PM - edited 02-21-2013 06:22 PM
If you end up going with a 7D, then I would get the 15-85 lens over the 24-70 or 24-105. The 15-85 is basically Canon's crop equivalent of the 24-105. It equates to 24-136 on FF body.
As a general rule (and IMO), wide begins at about 15mm crop (24mm FF). If landscape is your "original passion" as you mentioned, you will really benefit with an specialty lens like the 10-22 which cicopo mentioned above.
On a FF, the specialty wide angle lens would be the 17-40 or 16-35. If you don't need the extra stop, get the 17-40 since you will be shooting landscapes around f/8 most of the time anyway.
Still, I would go with the 6D and start out with the 24-105.
Good luck and let us know what path you take.
02-22-2013 01:49 AM
02-22-2013 02:11 AM
For the type of shooting - kids and landscapes - you're better off with a 6D instead of a 7D. A 6D, being full frame will allow you to take great landscape pictures with the 24-105 @ 24mm. I had considered getting the 16-35mm lens when I only had the 50D (1.6 Crop) but now with a 5D3 full frame, I've decided that I don't need it as 24mm is plenty wide for me.
As you already know, the 6D is full frame, the 7D is 1.6x Crop. With the 6D, pictures taken at ISO 25,600 would be about the same in noise level as the 7D taken at ISO 1600. It is that good. It also has built-in GPS, wireless. The choice is clear for your kind of shooting. The only use that would require a 7D would be for fast action sports and Birds in Flight where you need fast focusing and the extra reach. For anything else the 6D wins hands down. Kids running around would be no problem for the 6D to handle.
Regarding choice of lens, the 24-105mm is a really good starter lens...I've used one for several years with great results. However, I recently got a 24-70mm f/2.8L II lens and I haven't touched the 24-105mm since. The increased sharpness and almost non-existent distortion compared to the 24-105 is remarkable. If you can afford it, go for the 24-70...you'll eventually get there anyways...spend now or spend later.
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