Two 5D Classics vs Two 60D's for weddings

So here's the dilemma, I will be hopefully second shooting for a couple of wedding photographers in the very near future with a 450D and Tamron 17-50 2.8. I plan on starting up my own wedding/portraiture/ev​ent business around June.

I'm having trouble deciding either buying two 60d's one with a 17-50 2.8 attached and the other with a 85 1.8 or 70-200 2.8 attached to it a long with a third shooter using a crop body too.

I'm wondering if the 5D Classic would still be a viable choice after viewing the photo quality that this camera produces I really like the quality and look it produces.

If I'm going to be primarily shooting weddings/portraiture would buying two 5D Classics one with a Tamron 25-70 2.8 the other with a 70-200 2.8 and second shooter using a T4i with a general purpose lens be better than the two 60D combination that I just posted?

I'm really liking the 5D's like I said so I'd have to pick up two of them used but I'm wondering if putting non Canon glass in front of it would still do it justice.

Sovern wrote in post #15262614
So here's the dilemma, I will be hopefully second shooting for a couple of wedding photographers in the very near future with a 450D and Tamron 17-50 2.8. I plan on starting up my own wedding/portraiture/ev​ent business around June.

I'm having trouble deciding either buying two 60d's one with a 17-50 2.8 attached and the other with a 85 1.8 or 70-200 2.8 attached to it a long with a third shooter using a crop body too.

I'm wondering if the 5D Classic would still be a viable choice after viewing the photo quality that this camera produces I really like the quality and look it produces.

If I'm going to be primarily shooting weddings/portraiture would buying two 5D Classics one with a Tamron 25-70 2.8 the other with a 70-200 2.8 and second shooter using a T4i with a general purpose lens be better than the two 60D combination that I just posted?

I'm really liking the 5D's like I said so I'd have to pick up two of them used but I'm wondering if putting non Canon glass in front of it would still do it justice.

IQ wise? The 5D and the 7D/60D/T2i are very close, but the 5D is based on old tech that has banding noise problems at high ISO.

The Tamron 28-75 is fabulous on crop, but not very good on full frame because of poor corner performance.

I have a 5D classic and a 550d/T2i and my preference is for the 5D, especially for portraits.

5D does suffer from banding at ISO3200, but it is pretty much as good as the 5D3 is up and including ISO 1600

It has a "FF look" that I haven't seen from crop cameras

IMO, I would rather have one 5dii (or better) than two 5dc's or 60d's. There are going to be venues with bad lighting and you're going to want the cleaner low light images. If you're going to be a second shooter or have a second shooter, there is no need to double gun. A 24-70mm would get you through most of the day, with the 70-200mm being used during the ceremony.

Why not 1 5D and 1 60D? 60D with the 17-50 lens becomes a FF equivelent of 24-70 and then the 5D can have the 70-200.
The 5D will make better portraits and the 60D can be used in low light but i would include a speedlight and bounce the light.

I'm not a big fan of mixing different cameras when it comes to weddings...
if you had a 5D with something long, and 60D with 17-50... and something happened in mid-wedding with that body, your 5D wouldn't be able to use that 17-50, and you'd lose a lot of your wider stuff... you should either make sure that your lenses can be used by all your bodies, or start piling up extra backup options for each body... expensive and cumbersome...
60D and 5D use different memory... I'd hate to have to care for extra memory for 2 kinds of memory... batteries as well... its kinda nice to have spare memory/batteries that fit everything you're carrying
and its also nice that regardless of which body you grab, the button layouts are the same, same menus, etc...

I'd say 1 of each. Keep the 450d as a backup in the car for example in case your stuck. Both will produce lovely photos. I may in your case initially just buy a 5d and see how the 450 goes with it. With correct use a flash and good lenses you may need nothing else

My thought is to buy something extremely reliable and full frame, like a new 5D2. Then, when you go to shoot, rent a second camera as a backup for the day.

Hmm after looking at the responses which I thank all of you for, I think that I'm going to go with a single 60D, sell the 450D when it comes time to and upgrade the body to a T4i for my second shooter to use (who is my girlfriend).

I feel as though if I go with a mkI I will have to put out even more money for high quality glass as full frame's "see" more glass than crop bodies and the 60D/T4i both have higher useable iso capability's (I heard 60D/T4i can shoot up to 6400 and images can be cleaned up nicely if you know what you're doing whereas the 5D has a max iso of 3200 which is low....) and the 60D/T4i has that very sensitive center AF point and the rest are all usable cross point AF points where as mkI has a standard cross center point and the rest of the AF points from what I heard are unusable.

I looked at more images from both cameras and honestly I can't tell the difference between the two formats/cameras......

So 60D as my main, T4I as my second body and second shooters body it will be(I can sell 450D for $200 and pick up a t4i for only $300 more and the T4i is drastically better and has just about everything the 60D has). Thanks for the help guys.

Sovern wrote in post #15263749
I feel as though if I go with a mkI I will have to put out even more money for high quality glass

some people will say that glass is what your investment should be centered around and built on... bodies will come and go...

SMP_Homer wrote in post #15263785
some people will say that glass is what your investment should be centered around and built on... bodies will come and go...

I already know that but you can get full frame glass primes such as the 85 1.8 and the crop will see the better portion of the glass vs the full frame which might see some softeneing at the corners. Also, crop body's have a very specific lens that is amazing but is crop only which is the 17-50(55) and it is significantly cheaper than the 24-70L while both perform the same roles just about as good.

For weddings... 60D, due to the video, flash commander and better LCD.

5Dc for portraits, then you have plenty of time. Same for Tammy. I use it if I have time and second chance to shot. My copy might miss focus once in a while.

If you are going to be second ask person who is going to be first about camera-lens they will need you to have.

The 5dc is a very accomplished camera. I'd use 5dc over 60d anytime any day when it comes to portraits/weddings.
The files it produces are nothing short of beautiful. Blur degradation is very pleasing. Slap a high quality prime and you're good to go.

Another thing I notice is that the 5d's file seem to stand PP abuse very well.

The only time it leaves me wanting is if I need to use the outer point in AI Servo mode trying to nab a moving object. Center-point is very accurate however.