Both cameras are full-frame Canon bodies, but the 6D Mark II is a DSLR with an optical viewfinder, while the EOS R8 is a compact mirrorless camera on the newer RF mount. If you already own EF lenses and like an optical view, the 6D Mark II still makes sense. If you want a smaller body and a modern system to grow into, the R8 is the more forward-looking choice. We have not used these cameras ourselves, so confirm exact specs on Canon’s pages.
What each camera is for
The 6D Mark II was positioned as an approachable full-frame DSLR for enthusiasts, with a flip-out touchscreen and a familiar layout. The EOS R8 is a lightweight full-frame mirrorless body aimed at people who want full-frame quality without the bulk of a DSLR.
Key differences
- Lens mount: the 6D Mark II uses EF lenses. The R8 uses RF lenses, though Canon’s mount adapter allows EF lenses to be used on it.
- Viewfinder: the DSLR shows the real scene through glass. The R8 shows an electronic view, which can show the exposure effect before you shoot.
- Size and weight: the R8 is clearly smaller and lighter, which matters for travel.
- Autofocus: mirrorless bodies from the newer generation typically offer more advanced subject tracking, and the R8 belongs to that group.
- Battery life: DSLRs usually last longer per charge than mirrorless bodies.
| Trait | 6D Mark II | EOS R8 |
|---|---|---|
| Type | DSLR | Mirrorless |
| Mount | EF | RF |
| Viewfinder | Optical | Electronic |
| Carry weight | Heavier | Lighter |
Who should choose which
Choose the 6D Mark II if you have a collection of EF lenses, enjoy an optical viewfinder, and want long battery life. Used EF lenses are plentiful, which can keep a kit affordable in practice. Choose the EOS R8 if you want to carry less, rely on modern tracking autofocus, or shoot video along with stills.
Think about where the system is heading. Canon has focused its new lens development on the RF mount, so the R8 offers a longer path forward.
Questions to ask yourself
- Which lenses do I already own?
- Do I prefer an optical or electronic viewfinder?
- How often do I travel or carry the camera all day?
- Do I shoot moving subjects that need strong tracking?
- Do I want to shoot video regularly?
FAQ
Can I use EF lenses on the EOS R8?
Yes, with Canon’s EF to RF mount adapter. Confirm compatibility for the specific lenses you own.
Which is better for travel?
The R8 is smaller and lighter, so it is generally easier to carry. The 6D Mark II lasts longer per battery.
The Short Version
Choose the 6D Mark II for EF lens owners who value an optical viewfinder and battery life. Choose the EOS R8 for a lighter body and a mount with a longer future. Check current specs on Canon’s pages first.
