This telephoto lens with Inner Focusing features extra-low dispersion (ED) glass to correct chromatic aberrations. When used on a PENTAX 645D equivalent focal length of 240mm in the 35mm format. Compatible with both film & digital PENTAX 645 cameras. ...

AF-S NIKKOR 300mm f/4E PF ED VR AF-S Digital SLR Lens Close the distance with this FX-format 300 mm lens. As the first F-mount NIKKOR to be equipped with a phase Fresnel element, it offers the ultimate balance of compact build, telephoto reach, & high image quality. High-performance telephoto lens:offers 300 mm focal length & f/4 maximum aperture. (450 mm focal length when used with a Nikon DX-format SLR.) Phase Fresnel element:this telephoto lens delivers great optical performance & boasts a remarkably compact build. Use of a phase Fresnel (PF) lens element noticeably reduces the weight, without degrading image quality. Vibration Reduction (VR): with SPORT mode. VR minimises the effects of camera shake & lets you shoot at shutter speeds up to 4.5 stops slower.¹ SPORT VR mode delivers a stable viewfinder image when shooting high-speed movement, & allows a continuous shooting frame rate with reduced release time lag, similar to those that are possible when VR is turned off. Advanced optical performance: Nano Crystal Coat effectively reduces ghost & flare, increasing the clarity & contrast of images. An ED (extra-low dispersion) glass element minimises chromatic aberration. Electromagnetic diaphragm: enables consistent, more precise exposures, especially when shooting at high frame rates. Fluorine coating: actively repels water, dust, & dirt without compromising image quality. The coating enhances durability & makes it easier to clean the glass without damaging the surface. Minimum focus distance: 1.4 m. RT-1 tripod collar ring (optional accessory): enables the lens to be rotated freely for smooth transition between vertical & horizontal orientation. ...

Featuring a new high-performance optical design, a quiet high-speed SSM (Super Sonic Wave Motor) autofocus drive system with enhanced object tracking, & an anti-glare Nano AR coating, the SAL300F28G2 super telephoto Sony G lens delivers both high contrast & beautiful bokeh effects at levels far surpassing those of existing 300mm f/2.8 lenses. Take advantage of fast internal focusing & two DMF (direct manual focus) modes for tack-sharp images in any situation. Designed with outdoor use in mind, the front & back of the unit as well as the area around the focus ring are specially constructed to help prevent water penetration. ...

Samyang Reflex f/6.3 300mm ED UMC CS is a small-size reflex lens designed for compact cameras. Its optics comprises 9 lens elements arranged in 9 groups, including one ED element that ensures high contrast & effectively prevents the chromatic aberration effect. With a long focal length & an exceptionally affordable price & small size (it weighs only 315 g), this lens a perfect companion for urban & wildlife photography. ...

Samyang Reflex f/6.3 300mm ED UMC CS is a small-size reflex lens designed for compact cameras. Its optics comprises 9 lens elements arranged in 9 groups, including one ED element that ensures high contrast & effectively prevents the chromatic aberration effect. With a long focal length & an exceptionally affordable price & small size (it weighs only 315 g), this lens a perfect companion for urban & wildlife photography. ...

Fast maximum aperture telephoto lens optimized for digital SLR cameras. This telephoto lens has a fast maximum aperture, & also features a new super multi-layer coating, which optimizes the characteristics of digital SLR cameras. A versatile, fast aperture telephoto lens for both digital & film SLR cameras. Two ELD glass elements reduce chromatic aberration to a minimum & also ensure sharp, quality images of high contrast. The new multi-layer lens coating reduces flare & ghosting, a common problem with digital SLR cameras. The Internal Focus system ensures the overall length of the lens does not change during focusing, ensuring convenient handling & ease of use. The HSM (Hyper Sonic Motor) models provide fast, silent AF function as well as full- time manual focus override. A drop-in 46mm filter holder in the rear part of the lens barrel can be rotated to facilitate the use of filters, including a polarising filter, in situ. Simply adding an APO teleconverter (optional extra), means that this lens can be used as a 420mm F4 AF ultra-telephoto lens with a 1.4X EX teleconverter, or a 600mm F5.6 AF ultra-telephoto lens with a 2X teleconverter. ...

Fast maximum aperture telephoto lens optimized for digital SLR cameras. This telephoto lens has a fast maximum aperture, & also features a new super multi-layer coating, which optimizes the characteristics of digital SLR cameras. A versatile, fast aperture telephoto lens for both digital & film SLR cameras. Two ELD glass elements reduce chromatic aberration to a minimum & also ensure sharp, quality images of high contrast. The new multi-layer lens coating reduces flare & ghosting, a common problem with digital SLR cameras. The Internal Focus system ensures the overall length of the lens does not change during focusing, ensuring convenient handling & ease of use. The HSM (Hyper Sonic Motor) models provide fast, silent AF function as well as full- time manual focus override. A drop-in 46mm filter holder in the rear part of the lens barrel can be rotated to facilitate the use of filters, including a polarising filter, in situ. Simply adding an APO teleconverter (optional extra), means that this lens can be used as a 420mm F4 AF ultra-telephoto lens with a 1.4X EX teleconverter, or a 600mm F5.6 AF ultra-telephoto lens with a 2X teleconverter. ...

The 300N Panoramic Head allows the photographer to take sequential constant-angle shots around a single axis, an essential part of achieving accurate & easy-to-stitch panoramic compositions. The set positions of the 300N give ample choice of rotation angle & also of the number of photos needed to complete a 360° pan. It covers the most common requests of panoramic photographers depending on the camera/lens equipment used. To make angle selection easier, a "click-stop" selector screw is included & attached to a safety cable to prevent it from being separated from the head & getting lost. The 300N also comes complete with a secondary locking screw which stops unwanted or accidental rotation of the head when heavy or off-center equipment makes it less balanced or when the head is used for non-horizontal rotation. The 300N can also be used as a turntable base for object panoramas, or as a means of reading the angle of rotation of camera pan movements in a range of photography. A camera can be mounted on the panoramic unit by adding one of a range of quick release, sliding or fixed plates or a conventional geared, ball or 3-way head. ...

300W lamp for Quadx Flash Head. ...

300w/240v Replacement Lamp for the Calumet Bravo Video Light. ...