Can I mount the Canon EF-S lens on FF or EF-only mount cameras?

No, without modifications! Modifications can include physical modifications that can damage your lens or camera body.

Can I mount Tamron 18-270mm for APS-C on FF camera body?

es, but it is made for APS-C cropped sensor cameras, and as such you could expect to vignette on edges.

I lost/broke my CD from Canon how can I install EOS Utility?

You should download the EOS Utility update and convert it to stand-alone installation, how? Find out here.

Why is an external recording device better than an internal from the camera?

Even 5D Mark III could use external recording devices rather than internal and there is a couple of reason to do so - 1st would be a better quality of sound. 2nd backup of your audio, better to have two than 1. 3rd you could use multiple external device inputs for interviews and wildlife shooting much easier than only one input camera has. The downside would be one more piece of equipment in luggage and where to mount that device, but the benefit of an external recording device is much more than those downsides.

Can I use a digital Canon EOS lens on a Film canon EOS camera?

Yes, as long as you use the same brand and technology in this case Canon EOS lenses.

Canon 5D Manual: [Download Our Free PDF]

Canon’s full-frame professional-level single-lens reflex camera is the Canon 5D. Canon’s full-frame digital SLR is inexpensive and compact, with a picture the size of a 35mm film frame. Not only is the EOS 5D the world’s smallest and lightest full-frame camera, but it can also shoot up to 3 frames per second and capture up to 60 full-resolution JPEGs and 17 RAW photos in a single burst for the experienced user.

The Canon DSLR manual is a useful resource for learning about all the features and functions of your device. Reading the manual can help you discover new features and get the most out of your device. It can help you troubleshoot problems, customize settings, and optimize its performance. With proper usage, there is less risk of damage, and you’ll learn how to get the most out of it.

Download the 5D manual

Please be sure to read and save the entire manual before using your Canon 5D. Misuse may damage the unit or cause harm or serious injury. Read this manual in its entirety before using the unit, and save it for future reference.

UPDATE: Dec-8-2019 According to the latest rumors surfaced over the web Canon 5D Mark V camera is in the Canon roadmap and if Canon goes on its scheduled announcement style, then we will see Canon 5D Mark V camera sometime in 2021.

Canon 5D FAQ

Can I mount the Canon EF-S lens on FF or EF-only mount cameras?

No, without modifications! Modifications can include physical modifications that can damage your lens or camera body.
Can I mount Tamron 18-270mm for APS-C on FF camera body?

es, but it is made for APS-C cropped sensor cameras, and as such you could expect to vignette on edges.
I lost/broke my CD from Canon how can I install EOS Utility?

You should download the EOS Utility update and convert it to stand-alone installation, how? Find out here.
Why is an external recording device better than an internal from the camera?

Even 5D Mark III could use external recording devices rather than internal and there is a couple of reason to do so – 1st would be a better quality of sound. 2nd backup of your audio, better to have two than 1. 3rd you could use multiple external device inputs for interviews and wildlife shooting much easier than only one input camera has. The downside would be one more piece of equipment in luggage and where to mount that device, but the benefit of an external recording device is much more than those downsides.
Can I use a digital Canon EOS lens on a Film canon EOS camera?

Yes, as long as you use the same brand and technology in this case Canon EOS lenses.

We also have Canon camera manuals for:
Canon 1D X Mark III
Canon 5D
Canon 90D
Canon A800
Canon T5
Canon G5X Mark II
Canon G7X Mark III
Canon R5