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Walt Langhans
04-23-2015, 11:51 AM
The smaller the focal length, the smaller the dot size, correct? (or do I have that backwards)

Scott Shepherd
04-23-2015, 12:17 PM
You have it right.

Walt Langhans
04-23-2015, 12:18 PM
Thanks Scott!

Dan Hintz
04-23-2015, 1:18 PM
The smaller the focal length, the smaller the dot size, correct? (or do I have that backwards)

I'll also add to that list... the shorter the working height/depth.

Tim Bateson
04-23-2015, 2:22 PM
I'll also add to that list... the shorter the working height/depth.


Adding to that.... The less focal length you have to work in. For example, my 2.0, I can usually be 1/16th (over 1/8th on some materials) or so in or out and still get a good shot. However my 1.5 has to be focused spot on.

Kev Williams
04-23-2015, 4:35 PM
I noticed on ebay the other day when buying more $18 lenses, you can get a ONE INCH focus lens-- I was going to get one just for giggles but I already have a 1.5" I've only tried once--

Dave Sheldrake
04-23-2015, 6:56 PM
You can get 1/2" and 3/8" off the shelf too Kev :)

Walt Langhans
04-24-2015, 8:30 PM
I've been doing some acrylic work and I'm hoping that a smaller dot will get me a little better resolution. What I have isn't bad... but I would like better. Thanks for the replies guys!

Chuck Stone
04-27-2015, 8:33 AM
You'll get a smaller spot size, but might not be able to cut it.
The depth of field is more shallow.

I might try a 1" for making cliches though. No cutting involved.