Quick and dirty darkfield trick

[sleekdigital]

I've been trying to get darkfield with my Swift 380T and I stumbled on to something. I was flipping out the filter holder when I happened to notice a darkfield appear before me. It turns out that the ring of the filter holder is just the right width and when it passed in front of the lamp I got a pretty reasonable darkfield effect (works for 4x and 10x objectives). You can also get a pretty decent oblique effect by moving the ring such that it blocks one side.

dark1.jpg (24.32 KiB) Viewed 3136 times

dark2.jpg (53.93 KiB) Viewed 3136 times

oblique1.jpg (35.75 KiB) Viewed 3136 times

oblique2.jpg (46.03 KiB) Viewed 3136 times

[garstro]

Nice pics. I have same scope & I don't think the filters work any better than what you did.

[sleekdigital]

Nice pics. I have same scope & I don't think the filters work any better than what you did.

Thanks! Have you been able to get darkfield with the 40x objective?

[garstro]

If I remember correctly, couldn't get enough light with 40x. I'll have to try the 20x & see if that works.

[sleekdigital]

If I remember correctly, couldn't get enough light with 40x. I'll have to try the 20x & see if that works.

What 20x objective do you have? I have been looking for one!

[garstro]

20 & 60x from amscope. They seem to work well with objectives that came with scope. Just din achromatics