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Description
Theia Technologies CS-Mount 9 to 40mm Telephoto Day/Night DC Auto Iris LensCan Be Used with Up To 5MP Cameras Long Reach and Field of View IR Corrected Compact Design to Fit Mini Dome Cameras F 1. 5 to Closed Aperture The Theia Technologies CS Mount 9 to 40mm Telephoto Day Night DC Auto Iris Lens magnifies objects from far away for unobtrusive security. The lens is designed to allow the installer to take full advantage of the high resolution of HD and multi megapixel cameras and can be used on cameras at up to 5 MP
- Can Be Used with Up To 5MP Cameras
- Long Reach and Field of View
- IR Corrected
- Compact Design to Fit Mini Dome Cameras
- F/1.5 to Closed Aperture
The Theia Technologies CS-Mount 9 to 40mm Telephoto Day/Night DC Auto Iris Lens magnifies objects from far away for unobtrusive security.
The lens is designed to allow the installer to take full advantage of the high resolution of HD and multi megapixel cameras and can be used on cameras at up to 5 MP resolution, giving a crisp image from edge to edge.
The lens is IR corrected for use with true Day/Night cameras. With IR correction, light from artificial illumination focuses at the same plane as the visible light, allowing the image to remain in focus when the camera switches to night mode and. Unlike lenses without IR correction, the night image will not be out of focus when using IR illumination.
- 9 to 40mm for long reach and field-of-view optimization
- IR corrected for true Day/Night cameras
- Supports multi MP resolution cameras for demanding applications up to 5 MP
- Compact design to fit into domes as small as 4" (10.16 cm) minidome size
- Designed with DC auto iris, CS-mount, and 1/3", 1/2.7" HD, and 1/2.5" sensors
| Lens Type | DC auto iris |
| Focal Length | 9 to 40 mm |
| Distortion | <1% |
| Resolution | Up to 5 MP resolution |
| F Number | F/1.5 to close |
| IR Corrected | Day/Night |
| Mount | CS |
| Field of View | At 1/3" Sensor Size: 30 to 7.1° (H), 22 to 5.3° (V), 38 to 8.8° (D) At 1/2.7" HD Sensor Size: 37 to 8.6° (H), 20 to 4.8° (V), 42 to 9.9° (D) At 1/2.5" Sensor Size: 36 to 8.5° (H), 27 to 6.3° (V), 46 to 10.6° (D) |
| Lens Length | <1.96" (50 mm) |
| Packaging Info | |
|---|---|
| Package Weight | 0.2 lb |
| Box Dimensions (LxWxH) | 4.0 x 2.3 x 2.2" |
In the Box
Theia Technologies CS-Mount 9 to 40mm Telephoto Day/Night DC Auto Iris Lens
- Limited 2-Year Warranty
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
4.4 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Comfortable, durable, and cute — perfect everyday shoes for kids
Size: 2 Big Kid, Color: Pink Milk
I purchased these Crocs Unisex Classic Clogs in Pink Milk for my daughter and they were a perfect choice. The color was a beautiful soft pink and exactly as pictured. They were incredibly easy for her to put on and take off by herself, which was a huge plus. The lightweight material and comfortable footbed made them her go-to shoes for both indoor and outdoor play. They were durable, easy to clean, and the sizing was accurate. We have bought several pairs of Crocs over the years and these maintained the same high quality. I was very happy with this purchase and would definitely buy them again.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Toddler boy loves them!!
Size: 9 Toddler, Color: Purple, Size: 9 Toddler, Color: Purple
My toddler boy absolutely loves the color purple and he squealed with delight when he got these from the Easter bunny. They are true to size and he says they are very comfortable to wear. Easy for him to slip on by himself. He decorated them with sea animals and they are his favorite shoes to wear every day! They’ve held up great over the last month so far. Photo included of his favorite way to wear them (on the wrong feet lol). Will definitely purchase another purple pair when these get too small.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Great kids shoe
Size: 3 Big Kid, Color: Mystic Purple, Size: 3 Big Kid, Color: Mystic Purple
I just love how easy these are for kids to slip and go. Fits my daughter great, love the color and love that she can design the look with the charms!
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Perfect pristine condition
Size: 12 Little Kid, Color: Mint Tint
Bought this in a neutral light green for my grandson's extra shoes for his weekend visits. Got a size larger than what he wears now, so he has to wear them "four-wheel drive" (w/ straps). Honestly, I just got the cheapest in this size, because he's at that big growth time, and they'll end up in the charity box before he wears them out. Crocs are of a good quality, and seem ideal for little growing feet. They clean up easily in the dishwasher or with a little scrub in the sink. They're easily replaced, and if they get swept up by the wind and deposited into a lake, they will float and may be easily fetched up in a net and returned to the owner (true story). Crocs dry fast, and keep feet from lingering odors without additives.
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Reviewed in the United States on March 1, 2026
★★★★★ 5
They Shouldn’t Work But Here We Are
Size: 13 Little Kid, Color: Mystic Purple
Let’s address the elephant in the room: Crocs look like a rubber cheese grater had a baby with a sandal. And yet somehow these things are a parenting cheat code. The comfort is unreal (10/10). Kids slip them on and suddenly they’re walking on clouds, bouncing around like tiny caffeinated marshmallows. Cleaning them is almost suspiciously easy (10/10) mud, juice, questionable playground goo just rinse and move on like nothing ever happened. The ventilation holes (9/10) actually do their job, keeping little feet from becoming sweaty disasters, though they also double as convenient entry points for sand, pebbles, and whatever treasures your kid decides to collect.
Style wise (7/10), look… no one is winning fashion awards here, but kids love them and confidence is half the battle. The heel strap (9/10) deserves a medal flip it back and suddenly your child enters “sport mode” like a video game character with boosted speed stats. The color options (10/10) are wild enough to satisfy even the most chaotic tiny human, from neon explosions to surprisingly normal shades. They’re ridiculously lightweight (10/10), which is great until your kid forgets they’re wearing them and tries to wear them to bed.
Durability (9/10) is solid they can handle running, jumping, puddle stomping, and general kid nonsense without falling apart. And the independence factor (10/10) Huge. No laces, no struggle, no dramatic “I can’t do it!” moments just slip on and go. Crocs as a brand (9/10) clearly know their lane comfort over cool, and honestly, it works.
Final Score: 9.2/10
They may not be pretty, but they’re practical, indestructible, and weirdly lovable like the chicken nuggets of footwear
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Reviewed in the United States on March 29, 2026