Which to buy · Every setting
Fellow Opus vs Turin DF83 V2
Conical against flat — the Opus's scale curves where the other runs straight. The Opus is numbered 1–11; the DF83 V2 is numbered 0–90.
Which to buy
Choose the
Opus if you…
- want fixed steps you can return to exactly — 41 on the dial, plus a micro-adjust ring
- want a timed auto-stop at 30, 60, 90 or 120 seconds
- want a lighter grinder — 2.3 kg
Choose the
DF83 V2 if you…
- pull mostly espresso — Turin designs the 83 mm burrs for it, though it lists them down to French press
- want stepless adjustment with a grind size indicator
- single-dose mostly but sometimes want a hopper — a 50 g bellows and a 225 g hopper
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Neither is sold new. Fellow now sells the Opus 2 in place of the original; the settings on this page are for the original. Turin no longer sells the DF83 V2; it now sells the redesigned DF83 Gen 2 and the variable-speed DF83V.
Sources: Fellow — Opus (archived) · Fellow — Opus gear guide · Turin — DF83 v2 (archived Dec 2023)
| Opus | DF83 V2 | |
|---|---|---|
| Brand | Fellow | Turin |
| Scale | Numbered dial | Numbered dial |
| Dial range | 1 – 11 | 0 – 90 |
| Burrs | Conical | Flat |
| Espresso → filter | 5.7 numbers | 32 numbers |
| Filter → coarse | 3.9 numbers | 44 numbers |
The same number means different things
Both grinders use a numbered dial, which makes it tempting to copy a number straight across. Setting 6 sits at grind index 34.2 on the Opus but 0 on the DF83 V2 — far enough apart to change the cup.
Converting a setting
If a recipe quotes a setting for one of these grinders, read across for the equivalent on the other. Rows are spaced evenly by grind size, not by dial number — on a conical burr those are not the same thing.
| Opus | DF83 V2 |
|---|---|
| 1.2 | 13 |
| 2 | 40.3 |
| 3.2 | 42 |
| 5.3 | 43.7 |
| 7.1 | 46.7 |
| 8 | 55.3 |
| 8.2 | 63.9 |
| 8.3 | 72.6 |
| 9.1 | 78.2 |
| 9.3 | 81.8 |
| 10.2 | 85.4 |
| 11 | 89 |
| DF83 V2 | Opus |
|---|---|
| 13 | 1.2 |
| 28 | 1.2 |
| 40.3 | 2 |
| 42 | 3.2 |
| 43.7 | 5.3 |
| 46.7 | 7.1 |
| 55.3 | 8 |
| 63.9 | 8.2 |
| 72.6 | 8.3 |
| 78.2 | 9.1 |
| 81.8 | 9.3 |
| 85.4 | 10.2 |
| 89 | 11 |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | Opus | DF83 V2 |
|---|---|---|
| Espresso | 1.2 | 22 |
| Moka pot | 1.3 | 40 |
| AeroPress (short steep) | 3.2 | 42 |
| Pour over — V60 / cone | 6.3 | 44.6 |
| Siphon | 7.2 | 47.1 |
| Pour over — flat bottom | 7.3 | 50.2 |
| Steep and release — Clever / Switch | 8 | 53.3 |
| Drip / batch brew | 8 | 55.3 |
| Cupping | 8 | 57.4 |
| Chemex | 8.2 | 63.6 |
| French press | 9 | 76.9 |
| Cold brew | 10 | 83.8 |
The shape of each dial
Where the connectors bunch, that grinder’s dial is compressed and single steps count for more. Comparing the two shapes tells you which gives finer control, and where.
Fellow Opus
Turin DF83 V2
Dialing in the Opus
Marketed as all-purpose, and it genuinely does cover more range than the Ode, but the espresso end is workable rather than good — expect to chase it. Where it earns its place is the coarse end: cold brew and French press come out notably even. If you bought the Opus mainly for espresso, dial it as a brew grinder first and judge it there.
Dialing in the DF83 V2
The larger-burr sibling to the DF64, aimed at people who want more speed and a flatter particle distribution. Espresso is the design centre, though it covers filter more comfortably than the 64mm version.