Products related to Focal length:
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M12 Thread Mount 3.6mm Focal Length F2.0 IR Lens for CCTV CCD Camera
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60mm Guide Scope Finderscope for Astronomical Telescope 240mm Focal Length F4 Focal Ratio
Features: 60mm object lens with fully multi-coated. 6-point screw bracket. 240mm focal length. Quick focus retractable(35mm) tube. 10mm focusing range with micro-focusing helical focuser. 1.25 /31.7mm connector, can be connected to eyepiece, electronic equipment, etc. M42*0.75 external screw thread to connect with camera. Removable dovetail bracket. For use with astrophotography telescopes. Compatible with popular CCD guide star, SG4, QHY5II, ZWO etc. Specifications: Material: Metal Focal Length: 240mm Focal Ratio: F4 Item Weight: 889g / 31.36oz Package Weight: 1074g / 37.91oz Package Size: 28 * 15 * 15cm / 11.02 * 5.91 * 5.91in Package List: 1 * Finderscope
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VILTROX AF 75/1.2XF Pro Camera Prime Lens for Portrait Photography APS-C Auto Focus F1.2 Large Aperture 75mm Focal Length
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Half inch diameter (12.7mm) focal length 50mm Achromatic lens visible antireflection film
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What focal length lens do I need?
The focal length lens you need depends on the specific requirements of your photography or videography. For example, if you are shooting landscapes or architecture, a wide-angle lens with a focal length of 16mm to 35mm would be suitable. For portraits, a focal length of 85mm to 135mm would be ideal to achieve a flattering perspective. If you are shooting wildlife or sports, a telephoto lens with a focal length of 200mm to 400mm would be necessary to capture distant subjects. Consider your shooting style and subject matter to determine the appropriate focal length lens for your needs.
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What is a fixed focal length lens for a DSLR camera?
A fixed focal length lens, also known as a prime lens, is a lens with a single, non-adjustable focal length. This means that the lens has a fixed angle of view and cannot zoom in or out. Fixed focal length lenses are known for their high image quality, wide aperture capabilities, and compact size. They are popular among photographers for their ability to produce sharp, high-quality images and their suitability for low-light conditions.
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How long is the focal length of this lens?
The focal length of the lens in the image appears to be 50mm. This can be determined by the markings on the lens barrel, which indicate the focal length. The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus, and it is an important factor in determining the field of view and magnification of the lens.
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What is the focal length of a converging lens?
The focal length of a converging lens is the distance from the lens to the point where parallel rays of light converge after passing through the lens. It is a measure of the lens's ability to bend light and bring it to a focus. The focal length is a key parameter in determining the magnification and image formation characteristics of the lens.
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Profession Glass Focusing Lens F10 Focal Length 6.35 Diameter Aspheric Cutting Laser Accessories
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30x30 Small Optical PMMA Plastic Fresnel Lens Solar Focal Length 28mm DIY Projector Lens Plane
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VILTROX AF 75/1.2XF Pro Camera Prime Lens for Portrait Photography APS-C Auto Focus F1.2 Large Aperture 75mm Focal Length
Features: APS-C format prime lens, 75mm focal length, F1.2 large aperture; featuring electronic aperture, internal focus and constant lens length. 16 elements in 11 groups lens structure, including 3 ED low-dispersion lenses, and 4 lenses with high refractive index. Noiseless focus motor can accurately control the moving position and bring accurate and smooth focusing. High definition nano multilayer coating, water-resistant, dust-proof and moisture-proof. Full metal body with precision brass contact points, durable and sensitive.
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VILTROX AF 75/1.2XF Pro Camera Prime Lens for Portrait Photography APS-C Auto Focus F1.2 Large Aperture 75mm Focal Length
Features: APS-C format prime lens, 75mm focal length, F1.2 large aperture; featuring electronic aperture, internal focus and constant lens length. 16 elements in 11 groups lens structure, including 3 ED low-dispersion lenses, and 4 lenses with high refractive index. Noiseless focus motor can accurately control the moving position and bring accurate and smooth focusing. High definition nano multilayer coating, water-resistant, dust-proof and moisture-proof. Full metal body with precision brass contact points, durable and sensitive.
Price: 479.99 £ | Shipping*: 0.00 £
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Is a 30mm fixed focal length suitable for landscape photography?
A 30mm fixed focal length can be suitable for landscape photography, as it provides a wide angle of view that can capture expansive scenes. It allows for a good balance between capturing the overall landscape and including interesting foreground elements. However, some photographers may prefer even wider focal lengths, such as 24mm or 20mm, to capture even more of the scene. Ultimately, the suitability of a 30mm fixed focal length for landscape photography depends on the specific preferences and creative vision of the photographer.
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What is the focal point and the focal length?
The focal point is the point at which light rays parallel to the optical axis converge after passing through a lens or reflecting off a concave mirror. It is the point where the image of an object is formed. The focal length is the distance between the focal point and the optical center of the lens or mirror. It is a measure of how strongly the lens or mirror converges or diverges light.
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Which 50mm fixed focal length?
The 50mm fixed focal length lens is a popular choice among photographers for its versatility and ability to capture images with a natural perspective similar to the human eye. There are various 50mm lenses available from different camera manufacturers, such as Canon, Nikon, Sony, and Sigma, each offering unique features and image quality. It is important to consider factors like aperture size, build quality, and compatibility with your camera system when choosing the right 50mm lens for your photography needs.
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How can one change the focal length of a lens?
The focal length of a lens can be changed by physically adjusting the distance between the lens and the image sensor or film. This can be done by moving the lens closer or further away from the sensor or film plane. Some lenses have a zoom mechanism that allows for changing the focal length without physically moving the lens. By adjusting the focal length, one can change the magnification and field of view of the lens, allowing for different compositions and perspectives in photography.
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