The Canon 5DMkII is the most popular real estate camera used by readers of this blog (17.5%). The 5DMKIII and 6D have been out for quite a while and the 5DMKII was officially discontinued at the end of last year.
So there are 18% or more of us wondering when we get ready to upgrade which is the best upgrade path? I thought it would be interesting to take a general look at the main considerations and get the advice of the readers that have already made an upgrade.
I know, Nikon people will say I should include the D600 and D800. But we all tend to be trapped in a system by the glass we have. The images I’ve seen from the D800 are beautiful. If I didn’t have all this Canon glass I’d be tempted to move back to Nikon. Perhaps a separate post on this subject later.
The video above goes into all the detail comparisons. Here’s how I would summarize the research I’ve done on the differences between the 5DMKIII and the 6D:
- Price: First of all the 6D is close to half (within $300 of 1/2 price) the price of the 5DMKIII.
- Image quality: 5DMKIII has better low light image quality than the 6D and 5DMKII. For an actual comparison see this video at 3:50. I’ve heard people argue that 6D has better image quality because it has a newer sensor but this video comparison indicates otherwise.
- Size and weight: The 6D (770 grams) is smaller and lighter than the 5DMKIII (950 grams).
- WiFi and GPS: 6D has WiFi and GPS built-in and it’s optional on 5DMKIII. Frankly I don’t understand why it’s taken camera manufacturers so long to realize WiFi and GPS should be in every body!
- Card slots: 6D has only a SD slot while the 5DMKIII has one SD and one CF card slot.
Ultimately this is going to a price trade-off for each one of us. What is the experience of those readers that have already upgraded to one of these Canon bodies.

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.