Matthew Duclos
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matthewduclos.com
Matthew Duclos
@matthewduclos.com
Cinema Lens Technician.
Amateur Librarian.
Industry Technologist.
Keyboard Enthusiast.
Cine Pen Archive Curator.
Studious Girl Dad.
This article is a result of years of inquiries from customers and wanting to bring some clarity to the topic of thorium in vintage lenses and how we handle it here at Duclos Lenses. Enjoy this deep dive! thecinelens.com/2025/09/18/t...
Restoring Yellowed Vintage Lenses with UV De-Yellowing
Discover how to restore vintage camera lenses from yellowing using UV light. Improve image quality and maintain optical performance effectively.
thecinelens.com
September 19, 2025 at 7:31 PM
One of the most common questions I get about our PL and LPL Macro Extension Tubes is "how close will my lens focus with it". There's no firm answer since there are a lot of variables, but I made a simple calculator that will produce a rough answer. Enjoy!

www.cinelenswiki.com/tools:extens...
tools:extensiontubecalc
Learn more about: tools:extensiontubecalc
www.cinelenswiki.com
July 14, 2025 at 8:34 PM
I wrote this article back in 2016 attempting to help newcomers navigate the exploding vintage lens market and the confusion around Zeiss Super Speeds. I feel like we achieved our goal of educated and demystifying our readers. But it's always worth another share! ✨ thecinelens.com/2016/08/24/w...
What’s in a Name? A Guide to Zeiss Super Speeds
One of the most frequent questions we receive at Duclos Lenses from all over the world is in regards to the different versions of the Zeiss Super Speeds. Sticking to just the 35mm format (not …
thecinelens.com
June 26, 2025 at 3:32 PM
It’s been a while since I was truly impressed by a new line of prime lenses. Sigma doesn’t disappoint. thecinelens.com/2025/06/20/s...
SIGMA Aizu Primes: A Love Letter to the Art of Cinematography
SIGMA’s latest foray into high-end cinema optics comes with a respectable technical achievement. The newly announced Aizu Prime Line is not just another set of fast cine primes. It’s the first comp…
thecinelens.com
June 21, 2025 at 6:06 AM
I never thought I would need to prep the floor of our projection room for lens testing. And yet, here we are - testing one of DZOFilm’s new probe zoom lenses. Coming soon to ducloslenses.com
April 13, 2025 at 6:15 PM
😍
March 1, 2025 at 6:43 PM
After years of admiring, I finally got my hands on a Zeiss ZX1 camera. It pains me how poorly this camera did when it was launched. The integrated Android OS was a feature ahead of its time. The ability to auto-sync with a local NAS is an overlooked feature that more cameras should incorporate.
February 14, 2025 at 8:32 PM
There are some cool Valentine's Day deals coming from Duclos Lenses this morning. Make sure you're subscribed to our mailing list! ducloslenses.com/mailinglist
February 14, 2025 at 4:40 PM
A few new pens added to the Cine Pen Archive today. We’ve cataloged over 100 pens now! That’s a lot for a little weekend tongue-in-cheek hobby project. Check out the entire collection at cinepenarchive.com
February 12, 2025 at 2:54 AM
I added a batch of writing instruments to The Cine Pen Archive this weekend. We’ve received contributions from 36 individuals. Thank you to all that have contributed! I couldn’t have done it without help from our amazing production community. Check out the latest at cinepenarchive.com
February 2, 2025 at 4:51 AM
Thinking about writing and “Do’s and Don’ts” for shipping , transporting, and storing lenses. Throw me your common questions so I can address them in the article.
January 25, 2025 at 10:21 PM
DZO has joined the probe lens game. We’ll see how it stacks up to the Laowa who set the standard. What’s your favorite Laowa probe version?

thecinelens.com/2025/01/15/i...
Introducing: DZOFilm X-tract 18-28mm T8 FF Probe Zoom
Macro filmmaking has always been about precision, detail, and the ability to capture extraordinary shots up close. But there’s been a catch: the probe lens, a tool designed for extreme close-ups, o…
thecinelens.com
January 24, 2025 at 11:04 PM
Not just a probe. A vari-focal probe!
I can’t wait to see the first macro vertigo shot with this lens.

thecinelens.com/2025/01/15/i...
Introducing: DZOFilm X-tract 18-28mm T8 FF Probe Zoom
Macro filmmaking has always been about precision, detail, and the ability to capture extraordinary shots up close. But there’s been a catch: the probe lens, a tool designed for extreme close-ups, o…
thecinelens.com
January 19, 2025 at 12:54 AM
Better late than never. I finally got around to adding the 2024 Edition Duclos promo pen to the archive. If you snagged one from us at a trade show, during an event, or at our lab, you know how smooth this pen writes. Check out this and the rest of the pens at cinepenarchive.com
January 16, 2025 at 5:58 PM
Another great addition to the Cine Pen Archive. This pen, a Papermate Powerpoint, commissioned by Leitz, is another mystery with no background. Share the entry page and help me find more info! matthewduclos.com/cpa/record-detail.php?archive_no=2391
January 13, 2025 at 6:36 AM
This fantastic Carl Zeiss fountain pen is a perfect example of what we strive for. Unfortunately I have zero background on when, who, or why the pen was commissioned. Hopefully someone at Zeiss can give me some additional info. Read more at ThCinePenArchive.com
January 12, 2025 at 1:34 AM
I've made some progress on the Cine Pen Archive over the holiday break. The site has been given a complete overhaul with a more robust database system.

Archive No. 2380 - a pen by Shot Over, contributed by Andrey Bethke is an excellent example. Check out the new site! www.cinepenarchive.com
January 3, 2025 at 2:25 AM
Merry Christmas and Happy New Year. Looking forward to 2025. #professionalgirldad
December 28, 2024 at 10:20 PM
Stay focused.
November 26, 2024 at 6:36 PM