Dust inside lenses, even new ones, won't affect images. If you plan to use them professionally, service or cleaning is advised. Expect reasonable functionality and optics without noticeable issues, unless specified.
eBay
K&F Concept Magnetic Metal Camera Lens Filter Cap for Magnetic or Thread Fixed ND CPL UV Black Mist Diffusion Filter
Aliexpress UK
With multi-layer coatings, they are waterproof, scratch-resistant, dustproof, and oil-resistant, protecting your lens from all angles while enhancing image quality by reducing UV interference. Applicable models: Compatible with DJI NEO.
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Lightdow Black Mist Filter 1/2 1/4 1/8 Black Mist Diffuser Lens Filter 49mm-82mm for Portrait Photography
Aliexpress UK
【Circular Polarizer Lens Filter】: 52mm CPL polarizing filter lens, eliminates reflection, improves color saturation and contrast, and makes good image quality without distortion. Universal for most smartphones.
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New 6PCS/Set Camera Lens Filter ND4/ND8/ND16/ND32 MCUV ND/PL Filters Kit Adjustable For DJI Pocket1/2 Drone Accessories
Aliexpress UK
Crafted from premium HD optical glass, the filter features multiple layers of NANO coatings on both sides, ensuring superior image quality free from flare and ghosting. The integrated cold shoe allows you to attach essential accessories like LED video lights or microphones, enhancing your creative possibilities.
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Action 2 Filter UV CPL ND NDPL NIGHT STAR Macro 10X Optical Glass Lens Filters Set For DJI Osmo Action2 Camera Accessories
Aliexpress UK
Since the natural light vibrates evenly in all directions, and the polarizer leaves the light passing through only a certain vibration direction. it can effectively reduce the reflection of water, glass, etc.
eBay
For DJI Mini 2 Camera Lens Filter for DJI Mavic MINI 1/2/SE Drone Filter Set UV/CPL/4ND PL/8 ND PL/16ND PL/32 ND PL Accessories
Aliexpress UK
Twist the lens to adjust and eliminate reflection intensity. 1x Circular Polarizer Lens Filter. 1x Lens Clip. Because the unpaid dispute will not be closed automatically, and we may ignore it. We'd like to settle any problem in a friendly manner.
eBay
K&F Concept Sports Camera Filter for DJI Osmo Pocket 3 UV CPL ND/PL Black Mist 1/4 Adjustable ND2-32 ND32-512 Optional Filters
Aliexpress UK
6 Pcs Kaleidoscope Lens Child Handmade Materials Colorful Prism Parts. Lens Smartphone Wide Angle Lens Cellphone Clip-on Cell Phone Lens. Practical Universal Outdoor 8X Macro Lens -focus Lens Phone Macro Lens.
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Digital SLR Camera Filter Dimmer Fader Variable ND Filter Adjustable ND2 to ND400 Neutral Density for Camera Lens 37-82mm
Aliexpress UK
【Versatile Use 】: Polarizer filter with clip suitable for landscapes, portraits, or others. 1 Lens Cap. Because the unpaid dispute will not be closed automatically, and we may ignore it. We'd like to settle any problem in a friendly manner.
eBay
12Pcs/lot Colored Gel Filters Set Flash Speedlite Color Gel Filters for Camera Universal
Aliexpress UK