I just thought I wanted to share my experience, the change is huge for me personally.
My eyes are 71mm apart, that's 3.5mm more distance from the nose than average.
You can find out (and HAVE TO) your own IPD in the uclus config tool, make sure to have the dk2 screen extended to max before doing it.
The Oculus DK2 lenses are centered at exactly these average values.
Now if you have 2 or 3 mm difference to to standard you will be fine but those who have a smaller or larger IPD will otherwise see a lot of blurring.
If one eye can see good, the other eye will be blurred. There is no way to make both eyes see clear through the lense because the "sweet spot" is not that big.
Once I extended the DK2 IPD to 70mm (so 1mm off from mine) I suddenly had a high win of quality, much better "presence" in the game and no eye strain at all even after hours of play.
The solution for me was simple, it took me an hour and is quite riskless imho.
What you have to do:
The goal is to be able to move the lens-cup just a few mm more to the side than it is usually.
This is done by removing a bit of material on the cup (nothing changed on the DK2 itself) and using a stripe of tape to fix it again.
Extending IPD:
1. remove the two lens cups, make sure you do not get any dirt on the screen
2. on the bottom of both cups remove a bit more than a half-circle of the extended "notch" which secures it in the display-hole
3. Now you could already move it a bit more to the side, but the cup-holder on DK2 side is blocking the path
4. Cut a bit into the cup bottom from the side (like 1mmx5mm) and slide it into the notch, now it even secures there
The same can be done to lower IPD.
It's really simple, you just cut a way some parts of the plastic which are in the "way" of sliding the cup to the side.
If you want to go back to "standard" you can just move it back into the cup-holders.
Lastly: now as you have moved the lenses you also need to correct the image on the DK2.
Sadly also the image is centered around 63.5mm IPD, to get the best experience you need a software-hack to move the images to your perfect eye position.
The guy at http://www.vr-gear.com/ is selling a 3d-printed model and offers a free software which makes the change and works well.
At first it sounds scary but the software is clean and simple:
Normally the game is communicating with the Oculus service over UDP on a fixed port.
vr-gears made a small hex-change to the oculus service and changes the listening port.
The software they offer listens on exactly this port and forwards everything between service and game.
Except for the IPD values, it intercepts this specific message and changes it to your choice.
Doing this was a huge change for me, it seems like I never experienced true "presence" before due to the IPD difference.
Now it's kinda perfect (as good as the DK2 can do).
Together with the matrix change I documented here (https://forums.frontier.co.uk/showthread.php?t=82171) the VR experience is really very good.
My eyes are 71mm apart, that's 3.5mm more distance from the nose than average.
You can find out (and HAVE TO) your own IPD in the uclus config tool, make sure to have the dk2 screen extended to max before doing it.
The Oculus DK2 lenses are centered at exactly these average values.
Now if you have 2 or 3 mm difference to to standard you will be fine but those who have a smaller or larger IPD will otherwise see a lot of blurring.
If one eye can see good, the other eye will be blurred. There is no way to make both eyes see clear through the lense because the "sweet spot" is not that big.
Once I extended the DK2 IPD to 70mm (so 1mm off from mine) I suddenly had a high win of quality, much better "presence" in the game and no eye strain at all even after hours of play.
The solution for me was simple, it took me an hour and is quite riskless imho.
What you have to do:
The goal is to be able to move the lens-cup just a few mm more to the side than it is usually.
This is done by removing a bit of material on the cup (nothing changed on the DK2 itself) and using a stripe of tape to fix it again.
Extending IPD:
1. remove the two lens cups, make sure you do not get any dirt on the screen
2. on the bottom of both cups remove a bit more than a half-circle of the extended "notch" which secures it in the display-hole
3. Now you could already move it a bit more to the side, but the cup-holder on DK2 side is blocking the path
4. Cut a bit into the cup bottom from the side (like 1mmx5mm) and slide it into the notch, now it even secures there
The same can be done to lower IPD.
It's really simple, you just cut a way some parts of the plastic which are in the "way" of sliding the cup to the side.
If you want to go back to "standard" you can just move it back into the cup-holders.
Lastly: now as you have moved the lenses you also need to correct the image on the DK2.
Sadly also the image is centered around 63.5mm IPD, to get the best experience you need a software-hack to move the images to your perfect eye position.
The guy at http://www.vr-gear.com/ is selling a 3d-printed model and offers a free software which makes the change and works well.
At first it sounds scary but the software is clean and simple:
Normally the game is communicating with the Oculus service over UDP on a fixed port.
vr-gears made a small hex-change to the oculus service and changes the listening port.
The software they offer listens on exactly this port and forwards everything between service and game.
Except for the IPD values, it intercepts this specific message and changes it to your choice.
Doing this was a huge change for me, it seems like I never experienced true "presence" before due to the IPD difference.
Now it's kinda perfect (as good as the DK2 can do).
Together with the matrix change I documented here (https://forums.frontier.co.uk/showthread.php?t=82171) the VR experience is really very good.
