Build Your Own SLA/SLS

Hi,

I have been printing on my Acer H6510BD for quite some time.
Although I have to say that my focus is quite uneven (center ok) but not so go at the further sides.

Is this something to be expected when zoomed in as close as you do on a 3D printer setup.
And is it just me that has a bad specimen or do all of you also have this.

It's something I've always noticed as well. Most seem to ignore it, apparently it is specific to the 6510 and P1500 models.

I just focus the middle and call it a day, does bother me knowing its not perfect all around.

have you tried a spacer for the lens? it would allow you to focus even closer, so maybe the current distance would be sharper?