Olpf rawlite filters tests

[Nicolas-r02]

Hi,

I read a lot on this site, but I never participate. I created an account because I'm stuck.

Are there any tests out there on Rawlite OLPF filters regarding moiré and aliasing?

There are a few tests, but they’re not really great and often about the Ircut.

A lot of people say rawlite olpf fiters are good for moire (but they only say "trust me"), but I can’t find any serious tests.

I’m talking about tests using test charts or clothes—comparing with and without the Rawlite filter. Not just a shirt or a chair for 2 secondes. Often, they're also too far from the target.
A simple close-up test showing the moiré pattern and the same shot taken with a Rawlite filter.... It's surprisingly hard to find.

I’m looking for a test that includes targets at different distances too, to confirm that the moiré pattern has indeed disappeared... With different kind of patterns too. 

I know it doesn't completely remove the moiré pattern, but I'd like to know what percentage of it it removes (5%–10%–90% ???)

[eatstoomuchjam]

I have no direct experience with the rawlite filters, but people seem to like them.  You might want to specify the camera since there may be variance in the quality/utility of the filter.

As a cheaper option, have you considered using a pro mist/glimmer glass/etc filter?  I think those can help with moire too.

[Nicolas-r02]

Unfortunately, a filter in front of the lens doesn't work. I think pro mist or soft focus filters doesn't affect the same frequencies.

The only thing that works seems to be an OLPF, good debayering or bigger resolution. I had the impression that Rawlite reduced false color issues but not the banding.

€450 is a bit expensive just to slightly reduce the problem.
I’ve never seen any serious before-and-after tests.

[kye]

I've seen some before and after tests a long time ago and they do work, but it's reduced not completely eliminated.  I understand your frustration because they seem to cost a lot and it's hard to know what you're getting ahead of time.

[Nicolas-r02]

Thank you. 
I'm still hopeful that someone with a Blackmagic camera and a Rawlite filter will post this online.
It wouldn't take long to put together something done properly, and I'm sure it would be helpful to others.

In the meantime, that's a lot of money based on promises.

[PPNS]

what camera is it for?

 

i cant really make a comparison since i dont have any with the upgrade, but the olpf that BM has started using on the FF models has been very helpful in not getting moire. On the pocket 4k it wasn’t hard to generate it with certain fabrics and high frequency detailed stuff in the background, but on the 6K FF sensor i’ve not seen it yet.

[Nicolas-r02]

I might be wrong, but downscaling from 6K to 4K or HD helps reduce moiré or aliasing.
That’s probably why there’s less of it or none with the BMPCC 6K and cameras with more pixels.

I’m looking for examples using 4K, 4.6K, or lower-resolution sensors with rawlite filers.

[Nicolas-r02]

I watched the videos on the rawlite account on Vimeo.  He shares videos that he didn't make himself.
Either the camera or the objects are moving. In one of them, the chart is even hidden at one point, or he isn't comparing the same shirts. You can still see the problem, though.

Even the seller can't share long well-made videos with clean results.

Sadly, I'll probably have to switch cameras and upgrade to a higher-end model.