Fisheye 2.1mm Lens

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Product Description:



1/3" CCD or CMOS

Focal Length

2.1 mm


0.3 Mega

Aperture (F/NO)




Field of View (Diagonal)


Optical Total Length

25.16 mm






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Q:Find the popular SLR camera lens
Take 50mm f / 1.4 this is 50mm talk about the focal length, 50mm f / 1.4 is the aperture. This head is fixed focus.   18-135mm f / 3.5-5.6 This head is the zoom head. Focal length of 18-136mm, aperture is f / 3.5-5.6.18 is the maximum aperture of the wide aperture is 3.5, and 135 is the telephoto end can shoot macro maximum aperture is 5.6. This lens is the zoom head.   The greater the aperture the greater the depth of field, the visual is the background is more vague. The greater the aperture, the corresponding f value is smaller, this is a good understanding. Wide-angle range of the general full-width camera 35mm focal lengths below the lens are wide-angle lens, used to shoot landscapes and characters. The scope of the macro should be more than 100 bar, this did not play
Q:Can the camera lens be repainted again?
but the quality of recovery will be resigned, because the coating and lenses The same time, in the lens design at the beginning to take into account and designed, and re-give you the coating manufacturers will not know the original intention, to re-plating the film is not necessarily very appropriate, it is difficult to ensure the final quality
Q:What is the requirement for a camera shot?
1, because you are in the concert scene, and the distance from the star is not necessarily, so the lens recommended zoom lens, and is in the telephoto above 2, is to photographed the stars of the moment photos, then ask the shutter time must be fast 3, the more clear the better photos, it requires ISO as far as possible not too high.  
Q:Lengthen the camera lens focal length is zoomed in or out
When the telephoto lens is stretched, the focal length also increases. 1, the longer the focal length of the optical zoom lens larger, the longer the focal length of the smaller the angle of the lens;
Q:Canon camera appears "camera and lens communication is faulty please clean the lens contact" error
There is such a failure, it is likely that the lens mount or fuselage bayonet electric shock was damaged or damaged, you can use alcohol to wipe the contact, if still can not work, it is recommended to send the service station.
Q:Can the old SLR camera lens be used on a digital SLR camera?
The lens time is long focus on these properties will decline, the optical quality is generally the same, but the coating off more common. Unless there is an old lens and then do not want to spend more money, or I think really no need to use the old lens.
Q:SLR camera lens anti-shake and not anti-shake great difference? Anti-shake and anti-shake lens that is more practical?
Take a safe shutter, roughly the use of the lens focal length of the countdown, such as 18-135 lens, the use of 18-side is, the safety shutter for the 1/18 seconds, 135 side was 1/135 seconds. The shutter is below the reciprocal of the focal length, there may be people heart beating, breathing and hand shake to the photo, the photo will "paste".
Q:Canon SLR lens how to choose?
3, if you do not meet the 18-200 head of the picture quality, but also need wide-angle shooting scenery, it is recommended on a 17-40mmf4L head, which is a very cost-effective Canon wide-angle zoom head. The only thing to do is that the lack of telephoto end, only through the other lens to make up. Also, travel photography, telephoto end usage is low, you can temporarily do not buy, after the need to re-purchase according to their own.
Q:How does the camera lens handle?
The lens do not engage in the water if there is a fingerprint is the use of ordinary tissue paper is also able to wipe my camera is also the result of this situation I was asked after the sale he is told that I use ordinary tissue paper can be wiped
Q:Do not unload the SLR camera lens
Is the mouth of the mouth is too tight, the trick is to try to use the rubber pimp child to grasp counterclockwise twist ... ... can not use sharp ... ...

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