5Dc upgrade or fast glass

I have been bitten by the fast prime bug and have a desire for the new Sigma 35mm 1.4 and Canon 135mm F2 lenses however I use my 5Dc mostly for taking pictures of my kids, one of 4 and the other is 2 so they don't stay still for long. I also have a desire for the 5D MKIII which I now have the money for (sold my 1D MKIII as the file quality did not amaze me as I had quite expected). The 5D MKIII's multiple focus auto points and far superior low light capability blows the 5Dc away in such conditions as shooting fast moving kids at play and taking family pictures/portraits indoors. As they grow I also want a capable enough camera to track them whilst running at their sports day events and whatever sports they end up playing as they get older.

As you can see from my signature I have some suitable lenses to use with the 5D MKIII however I would like to know if any of you may have been in a similar dilema as me and chosen to keep the 5Dc and buy fast glass, or bought the 5D MKIII and used existing glass....whilst waiting to win the lottery to afford it all !!!!

Thanks

Since you're already on FF with the 5Dc, I would probably lean towards upgrading the 5Dc to the MK III if you can find a good sale price on it. The 85 1.8 is excellent in low light and great FL for portraits on FF, but it still might be a tad long for indoor shots of your family. The center point on the 5Dc could hold you over until you saved enough money again after purchasing the Sigma 35 or 35L if you choose. You already have a good telephoto zoom and you have a decent landscape/wide normal in the 17-40 f4L. Obviously the 5D MK III has an excellent af system and would fulfill your requirements of shooting sports and catching candids of the kids, however 35/85 primes are a great combination to have and honestly I feel that you could go either way you choose at this point.

Buy the glass. It's a better investment and will fill in "focal length" holes that you have now.

Buy a 40D as a backup for shooting sports. Having different tools for different purposes will be cheaper and easier than trying to find a single do-all.

35L or the newer sigma 35mm f1.4 would be nice on 5dc. I had to sell my 5dmk3 now using 35L and sigma 85mm f1.4 on my 5dc. They were definitely better on 5dmk3 but still usable on 5dc. AF on 5dmk3 is real helpful when shooting kids.

For immediate needs and the glass you have, I would go for 5D mark III

With young children at their age, better AF gives you more keepers. Then, add glass when you know your requirements.

With a 70-200 2.8L, that might need upgrading to IS version in performances/school shows but do you need it for that now? Also, the higher ISO capability of the 5D mark 3 lets you get a higher shutter speed in that scenario.

24-70 2.8L II would be useful but not essential.

I have kids of all ages. Three at home, fourth one is adult now.

First lens I upgraded was Tamron 90 2.8 lens with too slow AF for little kids.
Not like running kids, but toddler sitting at mother hands. I let Tammy go and let go 100F2, some reviews placed it above 85 1.8, but my copy was dull in colors and it was having "purple" problems. Now I have 100L instead of two average prime lens.

My second lens to upgrade was Zeiss 50 1.4 ZE. Incredible lens at 1.6 and smaller apertures. But my vision isn't getting better. Let it go and let go 17-40L, which is not so usable at wide end. Too much distortions. Now I have 50L.
Our seven months old was in swing chair. I pointed to her face my 5Dc with 50L on it in AF Servo mode. Took about 10+ pictures at wide aperture. Only two OOF.

Here is no problem with AF of 5Dc for kids sports as well. Back button focusing and USM lens does the trick well. It just not a machine gun in terms of fps.
The only 5DC little problem for family pictures is limitation of high ISO range.

I say if you have the $ for the 5d3 right now you should go that route. Then just save a little more and grab a 35 1,4. I use a 5d3 and am very pleased with my keeper rate when shooting my fast moving kids. OOF images are almost a non-issue.

Id keep the 5D and buy glass that you will keep forever.

Travis.

I would get the 5diii now and sell the 5dc, 50 & 85 to fund the Sigma 35. Tell wifey you want a 135L for your birthday!

Here is my take again.

Something like this was no issue for 5dmk3 in AI servo mode but pain in the bxxx for 5dc/5dmk2.

I'm answered - at the same question ... - here:
Re: Upgrade 5Dc or buy fast glass

Thanks all for some fantastic responses, really constructive and helpful, I appreciate your time. Just one small spanner to throw in the works if I may. How about the 6D and the 135mm f2 for the price of the 5D MKIII ?

OK don't have a dig for moving the goal posts, only trying to stimulate some more views and guidance ?

Cheers

I wondered what happened to my reply then i realized it was a different thread same question... Fwiw posting the same thing in multiple sub directories generally isnt very well regarded on most forums.

Travis

Alpinebully wrote in post #15739140
Id keep the 5D and buy glass that you will keep forever.

Travis.

And what? Keep the 5DC forever?

Jasonfire124 wrote in post #15739549
Thanks all for some fantastic responses, really constructive and helpful, I appreciate your time. Just one small spanner to throw in the works if I may. How about the 6D and the 135mm f2 for the price of the 5D MKIII ?

OK don't have a dig for moving the goal posts, only trying to stimulate some more views and guidance ?

Cheers

Don't have a 6D, Never even seen one...read a couple posts about them....I know they have a single cross-type AF point vs the 5D3 with 41 cross type points. I know I hated the 5D2 for fast moving stuff that I would have LOVED to have cross-type outer points for. I say go for the body with the totally sweet AF system and then build around it. Canon 5D mark III $3000, not having to worry about missing the shot because of a mediocre AF system....priceless! Cheesy, I know it...couldn't resist.