I got an S2 with the 7mm 3030 gasket and the reflector itself didn’t produce a perfectly round beam. The s2+ reflector did though so I used it instead. They should have the same sized hotspot
Smooth. It doesn’t as far as I know because it’s too short. Just get the S2+ with the osram and you should be fine. I was testing out a special use case where I want it as a little spill as possible so I used an S2+ reflector and filled the gap with some black tubing material to absorb the light’s spill.
I think sometimes the messages from Simon can do with some improvement.
Though the outcome of his message is the same, the reason needs some clarification.
On the outside the head(piece) of an S2 is almost identical to that of an S2+, just a few mm longer.
On the inside it is a complete different story. The short version of it is this:
The S2 has a long reflector and a short pill.
The S2+ has a short reflector and a long(er) pill.
In both heads the threads run a far down as they are needed for the pill to secure the reflector.
So in the S2 they don’t run down very far. Because it has a long reflector.
The short reflector of the S2+ fits perfectly fine in an S2 body,
but the threads don’t run far enough down for the (eg. any) pill to be able to secure them.
Picture: S2 combo on the left, S2+ combo on the right.
The reflector will fit, but the pill can’t get far enough down in the head to secure the reflector.
It is not a matter of not wanting to assemble a working light for you, it is a matter of not being able.
Mind you, I’ve bought many S2(plusses) from him, though not recently.
If things have changed inside the heads, I’m not aware of that.
I have determined with a height gage and a lux meter that the optimum gap between the MCPCB and the bottom-most part of the S2 reflector is .66mm /.026”, when paired with an Osram WF1. Due to compression of the plastic centering gasket, .686mm / .027” should be ideal. Being off in either direction, too tall or too short, by .1mm / .004”, does not have much of an effect on lux (~5%) or beam quality.
Further, the beam looks good even when the reflector is dead flush on the MCPCB, but it is floody and not focused, and the Lux value is at 58% of perfect focus.
When the reflector is far too high, at a certain point a dead spot / donut appears in the center of the beam.