DIC vs the Universal Filter

Litonotus · Post by **Litonotus** » Sat Sep 29, 2012 8:49 am

Almost all my previous images were taken with my very simple invention that I called the Universal Filter (or Universal Gradient Filter/UFG). I have been waiting for a possibility to compare it with DIC because my goal was to make the filter effect as close to DIC as possible.

I finally did the comparison, and here it is:

when it comes to lower magnifications (4/10/20) it works really good (: on higher the filter effect fades and is strongly outperformed by DIC.

pwnell · Post by **pwnell** » Sat Sep 29, 2012 9:07 am

Seems to me like it is working well.

Pau · Post by **Pau** » Sat Sep 29, 2012 9:45 am

Nice comparison!
I will need to make some UGFs. (one of my growing list of to do projects for some time now)
Do you use the same UGF with all objectives?. I ask this because I think that the "gradient zone" of the filter may need to be wider with high NA objectives than with low NA ones, like the condenser diaphragm for brightfield.

PS: congratulations for your new DIC setup. I'm sure you're going to do a good use of it

Litonotus · Post by **Litonotus** » Sat Sep 29, 2012 10:59 am

thank you (:

Pau wrote:Do you use the same UGF with all objectives?

yes, that's why I call it 'universal' (: I use it for 2x, 4/5x, 10x, 20x, and sometimes 40x. I tried to make a filter for higher magnifications but the effect is not good - just a typical obligue light.

Mitch640 · Post by **Mitch640** » Fri Oct 19, 2012 2:44 pm

Is there a thread with the instructions how to make this? I thought there was, but have lost track of it.

Litonotus · Post by **Litonotus** » Fri Oct 19, 2012 10:09 pm

here it is: http://www.photomacrography.net/forum/v ... hp?t=15142

Mitch640 · Post by **Mitch640** » Sat Oct 20, 2012 2:09 am

Thanks.