nanoDLP

janzobanzo

Member

Registered: 2020-04-15

Posts: 12

Request: Barrel correction negative values

Hello all my SLA printing friends,

I've been using nanodlp for quite some years now, and I've lately updated my printer from lcd mask to DLP mask..

With my DLP projector (benq tk7800m)  I've noticed that not all lines are going straight, so I looked into possible correction types, and I've found out you've implemented barrel correction into nanodlp, which is awesome, it also works well.

My only problem is that it seems like a negative value in barrel correction factor would fix my projector's lens issue and straighten the projected lines, but software only lets me enter positive values in barrel correction factor.

Positive values seem to deflect the lines even more, so If I could use negative correction factor I could fix this..

Any advice?

Sincerely,
Jonathan

janzobanzo

Member

Registered: 2020-04-15

Posts: 12

Re: Request: Barrel correction negative values

When I try to enter negative values into barrel correction factor, and display test pattern, screen is only black...

F.m

Member

Registered: 2017-12-22

Posts: 147

Re: Request: Barrel correction negative values

it is very necessary, in the case of optoma projectors current settings can not correct the distortion.

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,541

Re: Request: Barrel correction negative values

Not sure if it will be enough or even correct but anyway added to the latest beta