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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
4.6 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Has the look that they should cost more.
Size: 11.5 Wide, Color: Dark Turquoise
Comfortable and the fit is very comfortable. Looks great and extremely comfortable. Soft and light weight. Easy to put on. Sizing was perfect and the wide width is truly a wide. I’m coming back for more colors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 4
Good at price
Size: 9 Wide, Color: Sand
Fit a little small at my big toe but otherwise fit well. Heel rubbed slightly first 5 hour wear but no blister.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Lightweight comfortable at a good price!
Size: 10.5, Color: Navy
These shoes are perfect. The color matches my navy outfits as well as my denim. They are comfortable and they look great. They are easy to pack lightweight and a great value.
I am extremely satisfied and highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 3
REALLY CUTE SHOE BUT CUT WAY TOO SMALL!
Size: 8, Color: Black Patent
I received the black patent leather shoes today and they are so cute! Sadly I need to return them because they are cut way too small. I normally wear a 7.5 or 8 on dress shoes so I ordered the 8. They are so tight across the top that it's uncomfortable as soon as I put them on. They are smaller than a normal size 8 dress shoe. The big toe area is extremely uncomfortable because it doesn't allow any room for it at all, so my big toe just presses against the side and end of the shoe without even walking in them. I have very narrow feet and these still are too small for me. So I am returning them and I already ordered a 8.5 W and hope that will fit much better. The patent leather is very cute and adds just enough dressy that I can wear them with slacks or my Capri jeans. I like the slip on and the cushion foot bed because it feels soft.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Love these flats!
Size: 9 Wide, Color: Black White Faux Snake Skin, Size: 9 Wide, Color: Black White Faux Snake Skin
One of my favorite pair of flats! I’ve had these for several years and they are still comfortable, in good shape and really add a little spice to my outfits. I can wear these all day and not have any foot pain or discomfort as a result. The quality is good, fit is perfect and I tend to have difficulty with shoes due to bunions. Love these!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
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