user experience fail

>>> The short answer: Metabones’ naming is inconsistent, and your frustration is justified. But there is a coherent underlying structure — it’s just buried under overlapping labels (“T”, “Ultra”, “XL”, “CINE”, “II”, “II+”) that Metabones reuses in different ways.

🧭 The real naming matrix (the part Metabones never explains clearly)

Dimension A: Mechanical housing

• T = current housing

• (older non‑T housings discontinued)

Dimension B: Optical formula

• Ultra = 0.71×

• XL = 0.64×

• Super16 = 0.58×

• Smart Adapter = no optics

Dimension C: Electronics

• Mark I

• Mark II

• Mark II+ (same processor, more memory)

Dimension D: Market segment

• CINE = video‑centric firmware + housing

• Standard = photo/video general use

Dimension E: Mount

EF→MFT, EF→RF, EF→X, EF→BMPCC4K, etc.

Metabones combines all of these into one long name, which is why the naming feels chaotic.

🧨 Why listings look contradictory

Retailers often shorten names incorrectly. For example, B&H lists:

• Metabones Canon EF Lens to RF‑Mount T CINE Speed Booster ULTRA 0.71×

• Metabones T Speed Booster Ultra 0.71× Adapter for Canon EF→RF

Both are “T Ultra” adapters — one is CINE, one is not.

The “T” is not a variant of “Ultra”. It’s just always there.

🧵 TL;DR (the part you actually want)

“T” and “Ultra” are not competing labels. You can have both because:

• T = mechanical generation

• Ultra = optical formula (0.71×)

• XL = different optical formula (0.64×)

• II / II+ = electronics generation

• CINE = firmware/housing variant

So a product named:

EF–MFT mount T Speed Booster ULTRA 0.71× II

means:

• EF→MFT

• T‑series housing

• Ultra optical formula (0.71×)

• Mark II electronics

Nothing contradictory — just terrible naming.