Migration from zooms to primes...your suggestions?

[ecka]

You haven't said why you want to change from those zooms.  If its image quality, I note you have a 7D.  If I were you I'd get a 5DmkIII - you'll notice a dramatic difference over the 7D.  The IQ of my 7D was less than the 5D classic (which I subsequently upgraded to a 5dMkII and which is worlds superior to the 7D).

Primes are nice, I love them and use them parallel to my zooms.
But as someone suggested before: if IQ is that counts, take a FF first.
My 2 cents.

+1

5D3 with zooms would be better than 7D with all the primes.

FF + 16-35/2.8L'II ~ APS-C + 10-22/1.8
FF + 24-70/2.8L'II ~ APS-C + 15-44/1.8
FF + 70-200/2.8L'II ~ APS-C + 44-125/1.8

APS-C + 14/2.8L'II ~ FF + 22/4.5
APS-C + 24/1.4L'II ~ FF + 38/2.2
APS-C + 35/1.4L ~ FF + 56/2.2
APS-C + 50/1.2L ~ FF + 80/2
APS-C + 85/1.2L'II ~ FF + 136/2
APS-C + 100/2.8L ~ FF + 160/4.5
APS-C + 135/2L ~ FF + 216/3.5

My advice:
5D3
TS-E 17L or TS-E 24L instead of 14L'II (for landscapes and architecture)
24L'II is fine
Sigma 35/1.4 instead of Canon
40/2.8 STM - a must-have
Sigma 50/1.4 instead of Canon
85L'II is great, but 85/1.8USM is fine (while smaller and faster AF)
135L is nice (better than 85L on APS-C)
Sigma 150/2.8 or 180/2.8 OS Macro instead of 100L, 180L and 200/2.8L'II

[bholliman]

Zooms and primes will always both have a place in my camera bag.  Why limit yourself to one or the other?  Both are tools and useful in certain situations.

[Viggo]

I've done what you're planning and it all depends. The initial reason I chose to switch to primes was because of light added, but completely fell in love with really shallow dof. The 35 L is an epic lens for me and my most used. The 24 I could never get rid of, VERY unique look with that wide angle and shallow dof .

Recently though the 1dx let's me shoot at MUCH higher iso's than my 400d with super clean images, so the need for faster apertures are way less now, along with I could use the flexibility of a zoom.

I just bought the 24-70 again and I can never sell it again, complete new life on the 1dx.

So don't choose either is my suggestion, keep your 24-70 and 70-200 and add a 35 L and architecture wise absolutely forget the 14mm, and if you want the best ( I know because I used to own it ) there's no way past the TS17, what a lens!

[Random Orbits]

I've done what you're planning and it all depends. The initial reason I chose to switch to primes was because of light added, but completely fell in love with really shallow dof. The 35 L is an epic lens for me and my most used. The 24 I could never get rid of, VERY unique look with that wide angle and shallow dof .

Recently though the 1dx let's me shoot at MUCH higher iso's than my 400d with super clean images, so the need for faster apertures are way less now, along with I could use the flexibility of a zoom.

I just bought the 24-70 again and I can never sell it again, complete new life on the 1dx.

So don't choose either is my suggestion, keep your 24-70 and 70-200 and add a 35 L and architecture wise absolutely forget the 14mm, and if you want the best ( I know because I used to own it ) there's no way past the TS17, what a lens!

+1.  TS-E 17 and 24-70 II will make a killer combo and would replace your 16-35 II and 24-70.  The 70-200 IS II is also best-in-class, and you'd need to spend a LOT more money to beat it with primes over its focal range.  Add to that a fast prime in the 35, 50 or 85 mm range, and you'd be pretty much set.

[mrsfotografie]

dont.
stay with your optics.

a) upgrade the 24-70 + 70-200 to the II-versions, it's worth the money!

b) add a 14mm (if you need it)
c) get a 50mm
d) get a 100mm macro
changing optics on the job sucks if you have 2 do it too often.
you don't have 4 bodies, do you?

+0.75 I would suggest to go full frame first. You can sell the 24-70 and get a 35 or 50 mm prime instead. Keep the 7D for convenience (it's nice to have 2 bodies so you can swap FL's without changing lenses. The crop gives you an extra function for each lens) In the end that will save you changing glass twice. For the 14 mm I would suggest the Samyang to save lots of $$ (add an AF confirmation chip for MF convenience).

Check which FF equivalent focal lengths you use most before deciding between a 35 or 50mm.

[bholliman]

If I were in your position I would be looking for full frame options before adding lenses.

[vikta11]

this is interesting since I have been also going with primes and leaving zooms for the most part espesially after going full frame last year with the 5Dmk3. I have tried a lot and have seen most of the ridicules pricing and this is what I'm currently using. Also keep in mind for stills mainly not so much video at this time.

Sigma 35 f1.4 Bitchen piece of glass
Sigma 85 f1.4 test the AF, i had to micro adjust 2+ on second copy, first one was way off. + CA is not the best.
Canon 100L f2.8, love this lens

And my last is a zoom for begger wildlife for now 70-300L I use this lens with Kenko DGX 1.4 and for compression factor.