Customized Photographic Lens Hood for DV From China
|FOB Price:||US $1 / Set|
|Min. Order:||10 Sets|
|Min. Order||FOB Price|
|10 Sets||US $1/ Set|
|Production Capacity:||300000 Sets/Month|
|Payment Terms:||T/T, Western Union, Paypal|
- Model NO.: VYOP002
- Trademark: VY or OEM
- Specification: RoHS
- HS Code: 9002113100
- 52mm 0.45X: 2.047 Inch
- Transport Package: as Requested
- Origin: Cn
The geometry of the lens hood can vary from a plain cylindrical or conical section (much like a lamp shade) to a more complex shape, sometimes called a petal, tulip, or flower hood. These more complex shapes of lens hood take into account the final image's shape and aspect ratio.  This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood, thereby reducing the amount of vignetting in the final image.
Ideally, lens hoods should increase in length, and therefore in efficiency, as the focal length of the lens increases and the angle of view reduces. Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood (away from the end of the lens) cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.
VY Optics could manufacture varied size of lens hood or lens shade, picture shown is 37mm. OEM is available, too.
All lens hoods are fit for Canon, Nikon, Olympus, JVC, Kadak, FUJI, Casio and so on.
|Range of diameter||Dia.0.7mm-Dia.400mm|
|Range of curve radius||R1.5-R∞ etc.|
|Tolerance of diameter||+/-0.1, +/-0.01, +/-0.005 etc.|
|Surface accuracy||λ , 1/2λ , 1/4λ , 1/10λ etc.|
|Tolerance of Thickness||+/-0.1, +/-0.05, +/-0.01 etc.|
|Aperture N||5, 1 etc.|
|Irregularity ΔN||2, 1, 0.5, 0.2 etc.|
|Surface quality||60/40, 40/20, 20/10, 10/5 etc.|