Lying Sigma Sampler

If Detail Daemon Sampler feels like a mixing board with ten faders, Lying Sigma Sampler is the same trick with one knob and a dry sense of humor about it. Same goal - squeeze more detail out of a model without touching CFG - but stripped down to the essentials. When you just want a bit more bite on a Flux or Z-Image render and don't feel like tuning a curve, this is the one to reach for.

How it works

Under the hood it's the same family of idea as Detail Daemon: it "lies" about the sigma the model gets, nudging the noise levels so less gets denoised away and more fine detail survives. The name is doing the heavy lifting - the sampler tells a small fib about where in the noise schedule it is. It's blepping's own node, and it deliberately exposes almost nothing so there's very little to get wrong. You wrap your existing sampler with it and go.

It's a niche tool compared to its bigger sibling - it comes up far less often in the wild - but that's partly the point. For a quick, single-value detail nudge it's less fiddly than setting up the full Detail Daemon curve.

The inputs

Three, and only the first really needs thought:

• dishonesty_factor - the whole show. It works like Detail Daemon's detail_amount but on a different scale, and inverted: negative values add detail. The default is -0.05, which the author pegs as roughly equivalent to a detail_amount of 0.5. Stay in the -0.1 to -0.01 band; go too negative and you'll oversharpen. Positive values push the other way and reduce detail, which is occasionally useful if a model is too busy.
• start_percent and end_percent - when the adjustment kicks in and stops, as a fraction of the run (defaults 0.1 and 0.9). Same logic as everywhere else in this pack: earlier steps affect big shapes, later steps affect fine detail. The defaults are a sensible middle band and most people leave them alone.

The output is a SAMPLER, which plugs into the sampler input of SamplerCustomAdvanced.

Installing it

It ships in the same pack as Detail Daemon, so if you already have that installed, this node is already there. If not, grab it through ComfyUI Manager by searching ComfyUI-Detail-Daemon, or clone it manually:

cd ComfyUI/custom_nodes
git clone https://github.com/Jonseed/ComfyUI-Detail-Daemon

Restart ComfyUI afterward. No model files, no extra dependencies.

Gotchas

The one that trips everyone: like Detail Daemon Sampler, this outputs a wrapped SAMPLER that works with SamplerCustomAdvanced by default. Feed it into a plain KSampler or KSamplerAdvanced and it silently does nothing. To use it there you'd build a preset with BlehSetSamplerPreset from the ComfyUI-bleh pack - but the path of least resistance is just to be on a custom-sampling graph.

Beyond that, the failure mode is simple: too much detail. If dishonesty_factor is dragged toward -0.2 or lower you'll get grain and oversharpening rather than crispness. Nudge it back toward -0.03 to -0.05. And as with any detail node, it's changing what the model denoises, so a strong setting can shift the image's composition a little - run it on a fixed seed with the node bypassed for comparison so you can see whether you actually improved the picture or just rolled a different one.