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Description
SIRUI 18°-36° Stepless Zoom Projector Lens for COB LightSince SIRUI began to produce lights, bendable lights, self inflating lights, tube lights, monolights, panel lights and light accessories have come into the market. Now, SIRUI launches one new lightweight product P1836A Projector Zoom Lens, which can be mounted on COB light to provide users with amazing lighting effects, suitable for photographer, studio and lighting designer to operate flexibly and creatively. With the advanced optical design
Since SIRUI began to produce lights, bendable lights, self-inflating lights, tube lights, monolights, panel lights and light accessories have come into the market.
Now, SIRUI launches one new lightweight product - P1836A Projector Zoom Lens, which can be mounted on COB light to provide users with amazing lighting effects, suitable for photographer, studio and lighting designer to operate flexibly and creatively.
With the advanced optical design technology, you no longer need to change lenses! The 18° - 36° stepless zoom lens allows you to fast and accurately control the light by smoothly rotating the focus adjusting twist lock with only one hand. This helps you change the angle and focus of the light, making it easy to change the shape of the light within the same distance.
Users don't have to purchase the aperture. Just mount this lens on the monolight to change light size and sharpness smoothly and naturally, which brings you efficient and convenient shooting experience.
Spot Size Adjustment
Focus Change
*Tighten the locking focus knob to prevent focus from being changed accidentally.
Thanks to SIRUI’s mature optical technology, it adopts integrated sealing design to this projector lens, making the lens extremely compact, only 1.7kg.
Other Brand
P1836A
Film
Live Streaming
Portrait
Creative Shooting
This projector lens can be mounted on a light stand to increase stability via one mini lens support with 1/4"-20 threaded hole when this lens is used with a small and lightweight light.
*P1836A projector lens works well with COB light which is below 200W. It is suggested to turn down the light if the power is above 200W. Or, the projector lens may be damaged.
Compact and portable lens for easy transport, ideal for indoor and outdoor shooting. This lens can also be flexibly operated even in narrow situations.
1/4”-20 threaded hole
This lens can also be flexibly operated even in narrow situations.
Designed with precise optical lens and low reflection lens coating technology, this projector lens helps correct chromatic aberration and further increase resolution and sharpness and also reduce distortion. Besides, this lens can project more than 98% even light and sharp clear shadow.
Uniformity of Light Spot
% Relative Illumination
Relative Illumination - 3m
Real Chief Ray Image Height (mm)
Zoom Position 1
Uniformity of Light Spot
% Relative Illumination
Relative Illumination - 3m
Real Chief Ray Image Height (mm)
Zoom Position 1
Strong aluminum alloy construction lens with heat-protective design and hollow design helps dissipate heat efficiently. When working with lights under 200W, the built-in heat dissipation system makes the temperature of this lens cover lower than similar products, which prevents your hands from being scalded when you are operating. And it makes the light system work normally, too.
*Please turn off the light first and detach the lens until the lens cools.
Strong Aluminum Alloy Construction
P1836A+CS200B
Compared with similar products, the data shows that temperature of SIRUI P1836A rises less and the heat dissipation is better, which is safer.
*The data above comes from SIRUI laboratory.
Four grooves are designed for easily inserting included shutter blades to cut or shape the light projected on the subject. And the fixed design shutter blades suit the grooves well.
Users can choose from 15 pieces of GOBO patterns and insert different GOBO patterns to the light to create various fantastic lighting effects, making the background rich.
Besides, the non-contact installation of GOBO patterns provides you with great convenience.
The GOBO pattern can be rotated freely, allowing you to get ideal and excellent lighting angle.
Three filters are included - red, yellow and blue. It is possible to mount the filter on the 72mm threaded mount of this projector lens to offer colorful lighting effects and make shooting creative.
This projector lens works well with COB light under 200W. It is suggested to mount this lens on SIRUI Blaze Series Monolight or CS Series Monolight to create brilliant images.
Gobo Holder
Shutter Blade
Bowens Mount
Heat Exhaust Fan
Focusing
Lens Tube
Zoom Ring
Name of Part
Specifications
Name
18° - 36° Projector Lens
Brightness
Improvement
Improvement
18 °: 2.69x / 36 °: 1.14x
Lens Aperture
Ø68mm
Field of View
18°~36°
Relative Illumination
@0.9 Field
@0.9 Field
18 °: ≥90% / 36 °: ≥50%
CCT Accuracy
>95%
Maximum Focusing Distance
>5m
Minimum Focusing Distance
<1m
Filter
72mm
Mount Type
Bowens Mount
Weight
1706g/3.8lb
Dimensions
305mm*157mm*118mm
12.0in*6.1in*4in
12.0in*6.1in*4in
Materials
Metal + Plastic
Surface Temperature
≤60° (With SIRUI 200W Light)
Storage Temperature
-20~60℃
Working Temperature
-10~40℃
Work with SIRUI CS200B, CCT 2800K/3200K/4300K/5600K/6500K
Data of Illuminance@1m/3m/5m
Data of Illuminance@1m/3m/5m
*The data above comes from SIRUI laboratory.
What's in the Box
Lens Only
① Projector Lens *1
② GOBO Holder *1
③ GOBO Pattern *15
④ Filter *3
⑤ Safety Box *1
⑥ Warranty Card *1
Kit
① Projector Lens *1
② GOBO Holder *1
③ CS200B *1
④ GOBO Pattern *15
⑤ Filter *3
⑥ Safety Box *1
⑦ Warranty Card *1
Lightweight safety box featuring anti-shock, pressure resistance and chemical resistance is designed to protect your projector lens during transport.
What's in the Box
Lightweight safety box featuring anti-shock, pressure resistance and chemical resistance is designed to protect your projector lens during transport.
Lens Only
① Projector Lens *1
② GOBO Holder *1
③ GOBO Pattern *15
④ Filter *3
⑤ Safety Box *1
⑥ Warranty Card *1
Lightweight safety box featuring anti-shock, pressure resistance and chemical resistance is designed to protect your projector lens during transport.
Kit
① Projector Lens *1
② GOBO Holder *1
③ CS200B *1
④ GOBO Pattern *15
⑤ Filter *3
⑥ Safety Box *1
⑦ Warranty Card *1
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Great Knee Support
Color: Blue
The 1-inch thickness provides exceptional support and cushioning, making it ideal for a variety of exercises beyond just yoga.
The high-density foam used in this mat is a game-changer. It not only cushions my joints but also retains its shape remarkably well.
The carrying strap is a convenient addition, allowing for easy transport wherever I go. Plus, the mat is easy to clean, which is a huge plus after sweaty workout sessions.
While the extra thickness might not suit everyone's preferences, especially if you prefer a thinner mat for certain poses, I find it perfect for my needs. It strikes an excellent balance between comfort and stability, providing the right amount of cushioning without compromising stability during balancing poses.
Overall, the BalanceFrom All Purpose Yoga Mat will become an indispensable part of my fitness routine. Its durability, support, and easy maintenance make it a top choice for anyone seeking a reliable exercise mat for various workouts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 27, 2023
★★★★★ 5
Perfect For My Routine
Color: Black
I am retired military, so exercise has always been a part of my daily routine. Since the pandemic I have had to adjust, which is hard because the gym has the equipment I have become accustomed to. I didn’t realize how different it was working out there as when I started to work out at home on my hard wood floors (no carpet anywhere). I thought it would be easy but the military exercise mat is entirely too thin and was making my tailbone hurt tremendously, so I had to give up my sit-ups and some other ab exercises. This kind of threw a wrench into my routine and I could start feeling my motivation go away. I decided to take a look on Amazon for a thicker mat. I should have done this long ago because I found this one I’m writing about. It’s the shape of any typical exercise Matt except it’s 1” thick. It appears to be made of a type of foam (not bothering to look at the description right now). When I pulled it out I thought I was going to sink in making sit-ups even harder but it’s firm but not hard. I like it better than what is at the gym. Durability will be hard to determine until I’ve had it a while but I’m definitely excited to start back up on my exercises.
I recommend this mat if you have hard wood floors, bad back, bad knees, etc.
I thought I read some negative reviews about mats this thick because of yoga and balance but I beg to differ. If balancing is part of your exercise routine, then a mat which makes balance harder is exactly what you want. Exercise is supposed to be challenging and you need to work harder to see a difference. If that isn’t your goal or if balance is a medical issue, this may not be the right mat for you. Something you may not think about is I have chronic foot pain and this mat makes it less painful for me to stand or jump.
For me, this mat is perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 26, 2020
★★★★★ 5
Extra Cushioning for Comfort
Color: Red
This mat is thick and cushy - even with meniscus tears in both knees I can comfortably exercise. And I love the color.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
★★★★★ 4
Nice, thick & comfy but came w/ punctures in foam; seller provided discount
Color: Purple, Color: Purple
I love the mat. It's thick and very comfortable on my knees. However, when I opened it for the first time at my yoga class, there were several cuts or punctures in the foam. I attempted to return it and the seller offered me a 10% refund due to the damage. I am concerned that the mat may deteriorate due to the damage it came with, but I need it and have no idea if the cuts will matter over time. So I accepted the $3 refund and am keeping the mat.
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Reviewed in the United States on November 26, 2024
★★★★★ 5
Best mat purchase yet
Color: Pink
I love this mat. I wish they had it in larger sizes. The only one I have truly non slip. Extremely comfortable especially on my back. Great price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
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