Using EF lenses in your R Series camera?

 

The choice between EF and RF lenses on Canon mirrorless cameras depends on a few factors, including your budget, existing gear, and what you're shooting. Here's a breakdown to help you decide:

EF Lenses on Canon Mirrorless

Canon’s EF lenses are designed for their DSLR lineup but can be used on RF-mount mirrorless cameras with the Canon EF-EOS R adapter (or third-party equivalents).

Pros of EF Lenses:

1. Wide Selection: Canon has been making EF lenses for decades, offering a massive range of options at different price points.
2. Affordable Used Market: EF lenses are readily available on the used market, often at lower prices than RF lenses.
3. Compatibility: Many EF lenses work flawlessly on RF-mount cameras when using the adapter, retaining image quality, autofocus and image stabilization.
4. Long Reach for Wildlife: Telephoto EF lenses, like the 100-400mm or 600mm primes, are popular among wildlife photographers.

Cons of EF Lenses:

1. Bulky Setup: The adapter adds extra length and weight, which might feel less balanced on smaller mirrorless bodies.
2. Not Fully Optimized: While EF lenses work well, RF lenses are designed to take full advantage of mirrorless technology. My recommendation is to stick to "L" EF lenses. 3rd party lenses from Tamron or Sigma may look attractive with a low price but they may not work properly in the R Series Camera.
   

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RF Lenses on Canon Mirrorless

RF lenses are specifically built for Canon’s mirrorless R-series cameras, like the R3, R5 Mk I or II and the  R6 Mark I or II.

Pros of RF Lenses:

1. Better Image Quality: RF lenses are optimized for mirrorless, often delivering sharper images, better edge-to-edge sharpness, and improved bokeh.
   
2. Advanced Features: Many RF lenses include advanced optical technologies like faster autofocus, customizable control rings, and superior stabilization.
3. Compact Designs: Certain RF lenses (e.g., the RF 50mm f/1.8 or RF 70-200mm f/2.8) are more compact than their EF counterparts.
4. Future-Proof: Canon is heavily investing in the RF system, so you’ll be better positioned for future upgrades.

Cons of RF Lenses:

1. Higher Cost: RF lenses are generally more expensive than EF lenses.
2. Limited Budget Options: While the RF lens lineup is growing, there are fewer affordable choices compared to EF.
3. No Third-Party Autofocus Lenses (Mostly): Until recently, third-party lens manufacturers couldn’t produce autofocus RF lenses, though this is starting to change.

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Which Should You Choose?

1. If you already own EF lenses: Stick with them and use an adapter. Canon’s EF lenses are still excellent, especially for wildlife photography with telephoto lenses like the EF 100-400mm.
2. If you’re starting fresh: Consider RF lenses for their better compatibility and future-proof design. You could start with versatile lenses like the RF 24-105mm f/4L or RF 100-500mm f/4.5-7.1L if you shoot wildlife.
3. Budget Constraints: Use EF lenses with an adapter to save money, especially since the adapter maintains great performance.