Kev Williams
05-11-2014, 4:42 PM
Been wanting to do this, had some time today :)
I ran 2 identical ramp and cut tests today, one with the lens correct, one with the lens upside down.
raster was 500 mm/s at 55 power, vector was 100mm/s at 25 power.
When I found the optimum focus distance, I ran some cut tests.
Ok, here's ramp test "A" (note the extra markings above the letters, that's how to tell them apart ;) )
http://www.engraver1.com/erase2/rampA1.jpg
And here's test "B"...
http://www.engraver1.com/erase2/rampB1.jpg
Using a magnifying glass I determined the best focused areas, and marked the areas with the arrows.
Here's closeups
"A"--
http://www.engraver1.com/erase2/rampA2.jpg
and "B"--
http://www.engraver1.com/erase2/rampB2.jpg
OK, so which one is which? I'm curious at to your picks, and the reason(s)!
And finally, I ran a few cut tests. What I found was the power/speed necessary was nearly identical for either lens position.
In this pic, both were ran at their prime focus points, speed was 100 mm/s, power was 50. No air. In both cases they both ALMOST made it all the way thru but not quite-
But the surface of the bottom plastic has less residue after the cut than the other... Which was which?
http://www.engraver1.com/erase2/cut1.jpg
Regardless of which is which, I would think there would be a much more noticeable difference than I'm getting?
I ran 2 identical ramp and cut tests today, one with the lens correct, one with the lens upside down.
raster was 500 mm/s at 55 power, vector was 100mm/s at 25 power.
When I found the optimum focus distance, I ran some cut tests.
Ok, here's ramp test "A" (note the extra markings above the letters, that's how to tell them apart ;) )
http://www.engraver1.com/erase2/rampA1.jpg
And here's test "B"...
http://www.engraver1.com/erase2/rampB1.jpg
Using a magnifying glass I determined the best focused areas, and marked the areas with the arrows.
Here's closeups
"A"--
http://www.engraver1.com/erase2/rampA2.jpg
and "B"--
http://www.engraver1.com/erase2/rampB2.jpg
OK, so which one is which? I'm curious at to your picks, and the reason(s)!
And finally, I ran a few cut tests. What I found was the power/speed necessary was nearly identical for either lens position.
In this pic, both were ran at their prime focus points, speed was 100 mm/s, power was 50. No air. In both cases they both ALMOST made it all the way thru but not quite-
But the surface of the bottom plastic has less residue after the cut than the other... Which was which?
http://www.engraver1.com/erase2/cut1.jpg
Regardless of which is which, I would think there would be a much more noticeable difference than I'm getting?