Additional Information
Spectrum for Reference

L-Pro Performance
I Comparason image was shot by Arnaud Besancon
All the pictures have been realised with 5D3 Astrodon modded and Samyang 24mm F1,4 at F2, 13s exp. time,3600 isos.
All the pictures are raw,without post-process
.
II The Lovers' Tryst shot in The Pinnacles Desert, Western Australia by Astrordinary Imaging
Whenever you are happy or upset, don't forget to share and express love to your loved ones. The Lovers' Tryst shot in The Pinnacles Desert, Western Australia by Astrordinary Imaging with L-Pro filter.
See how Paean Ng make such an impressive.

III The Earth Forest and Xundian Beidaying©Le Bai
Canon 6D mod Lens:Canon 16-35 f/2.8 L-Pro Filter
Shooting data:24mm、F2.8、400S+24mm、F2.8、120S


Ⅳ Milky Way+Jupiter with Optolong L-Pro filter Copyright:Gernot Obertaxer
Imaging telescope or lens:Sigma 35mm F1.4 DG HSM Art
Camera:Canon6D(a)
Mount:Fornax Mounts Lightrack II Resolution: 5354x3572 Dates:May1,2019 Frames:
Optolong L-PRO: 25x150"ISO1600 Integration: 1.0h

V Here the final Image of comet 46/P Wirtanen and the Pleiades, shot by Blake Estes.
This imaging run ended up being a marathon that took about 22 hours of processing, using Optolong L-Pro filter for imaging. Its absolutely perfect!

Ⅵ Milkyway shot by Kerry Ann
with L-Pro EOS-FF clip filter Canon 6d sigma15mm fisheye, single shot. To enhance the contrast she used L-Pro filter.

About Optolong
While Optolong is a relative newcomer to the astronomy industry, they are no strangers to optics and filters. Optolong is a division of Yulong Optics Company, a high tech company specializing in optical filter design and production. Their products include bandpass filters, flourescence filters, edge filters, longpass and shortpass filters, beam splitters, anti-reflection coatings, optical mirrors and, of course, astronomical filters.
Established in 1999 and based in Kunming City, China, Optolong/Yulong provides nearly 2000 types of optical filter coatings annually to customers worldwide in a wide variety of industries and applications.