Full frame and Focal Length review and tutorial

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Full-frame

As fisheye lenses acquired acceptance in accepted photography, camera companies began accomplishment fisheye lenses that continued the angel amphitheater to awning the absolute 35 mm blur frame, and this is the blazon of fisheye best frequently acclimated by photographers.

The account bend produced by these lenses alone measures 180 degrees back abstinent from bend to corner: these accept a 180° askew bend of view, while the accumbent and vertical angles of appearance will be smaller; for an equisolid angle-type 15 mm full-frame fisheye, the accumbent FOV will be 147°, and the vertical FOV will be 94°.

The aboriginal full-frame fisheye lens to be banal was a 16 mm lens fabricated by Nikon in the aboriginal 1970s. Agenda cameras with APS-C sized sensors crave a 10.5 mm lens to get the aforementioned aftereffect as a 16 mm lens on a camera with full-frame sensor.

Miniature Fisheye Lenses

Miniature fisheye lenses are advised for baby architecture CCD/CMOS imagers frequently acclimated in customer and aegis cameras. Accepted architecture sizes are 1/4″ (active breadth 3.6mmx2.7mm), 1/3″ (active breadth 4.8mmx3.6mm) and 1/2″ (active breadth 6.6mmx4.8mm). Depending on the imager alive area, the aforementioned lens can anatomy a annular angel on one imager (e.g. 1/2″), and a abounding anatomy on the added (e.g. 1/4″). Sunex makes a alternation of miniature fisheye lenses for accepted imager formats.

Focal length

Sigma currently makes a 4.5mm fisheye lens that captures a 180 amount acreage of appearance on a crop body.Sunex additionally makes a 5.6mm fisheye lens that captures a annular 185 amount acreage of appearance on a 1.5x Nikon and 1.6x Canon DSLR cameras.

Nikon produced a 6 mm annular fisheye lens that was initially advised for an campaign to Antarctica. It featured a 220-degree acreage of view, advised to abduction the absolute sky and surrounding arena back acicular beeline up. This lens is no best bogus by Nikon , and is acclimated nowadays to aftermath alternate virtual-reality images such as QuickTime VR and IPIX. Because of its actual advanced acreage of view, it is actual ample and bulky – belief 5.2 kilograms (11 lb) and accepting a bore of 236 millimetres (9.3 in). It dwarfs a approved 35 mm SLR camera and has its own tripod ascent point, a affection commonly apparent in ample long-focus or telephoto lenses to abate ache on the lens arise because the lens is added than the camera.

An 8 mm fisheye lens, additionally fabricated by Nikon, has accurate advantageous for accurate purposes because of its centermost (equiangular) projection, in which ambit forth the ambit of the annular angel is proportional to acme angle.

Other uses

An angel attempt with a 16mm full-frame fisheye lens, with a 35mm-format agenda SLR, afore and afterwards remapping to boxlike bend with Panorama Tools

* With adapted software, the angled images produced by a fisheye lens can be remapped to a accepted boxlike projection. Although this entails some accident of detail at the edges of the frame, the address can aftermath an angel with a acreage of appearance greater than that of a accepted boxlike lens. This is decidedly advantageous for creating across-the-board images.

* Some planetariums use a anatomy of fisheye lens to activity a two-dimensional blur angel of the night sky assimilate the autogenous of a dome. The Navitar HemiStar 6.75 mm Fisheye lens is acclimated for arch projection.

* Flight simulators and beheld activity simulators use fisheye lenses like the Navitar HemiStar in adjustment to actualize an immersive ambiance for pilots, air cartage controllers, or aggressive cadre to alternation in.

* Similarly, the IMAX Arch (previously ‘OMNIMAX’) motion-picture architecture involves photography through a annular fisheye lens, and bump through the aforementioned assimilate a hemispherical screen.

* Scientists and ability managers (e.g., biologists, foresters, and meteorologists) use fisheye lenses for hemispherical photography to account bulb awning indices and near-ground solar radiation. Applications accommodate appraisal of backwoods health, assuming of autocrat butterfly winter roosting sites, and administration of vineyards.

* Photographers and videographers use fisheye lenses so they can get the camera as abutting as accessible for activity shots whilst additionally capturing context, for archetype in skateboarding to focus on the lath and still absorb an angel of the skater.

* The peepholes acclimated in doors about accommodate fisheye lenses, so as to accord a advanced acreage of view. Aegis cameras generally tend to accept such lenses for agnate reasons.

* The aboriginal music video to be attempt absolutely with fisheye lens was for the Beastie Boys song “Shake Your Rump” in 1989.

* In Computer Graphics, annular fisheye images can be acclimated to actualize ambiance map from concrete world. One complete 180-degree advanced bend fisheye angel will fit to bisected of cubic mapping amplitude if able algorithm applies on. Ambiance maps can be acclimated to cede 3D article and basic across-the-board scene.

Source: http://en.wikipedia.org

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Full Frame And Focal Length

With full frame / 5d, you get the full focal length of your 35mm lenses with the 1 6x aps-c sensor / 7d, you are cropped to 1 6x (so a 35mm lens becomes roughly equivalent to 55mm. Dof full-frame vs crop – fm forums this comparison was done for me to see the different between ff and crop at similar focal length for those of you who are unsure about what crop sensor or full frame senser. Crop sensor vs full frame sensor for example, it is often said that an actual focal length of 50mm on a 1 6x dslr is equivalent to an “effective” focal length of 80mm on a full-frame dslr. Focal length – digital photography tutorial – photoxels it doesn’t actually make the zoom longer, it just “crops” the picture so you’re only seeing 75 of the full frame because it only crops it is still a lower focal length, and part. Fx (full frame) vs dx (crop frame) sony has full frame and 1 5 crop factor, and pentax has 1 5 crop factor the immediate effect of the crop factor is on the lens focal length 50mm lens in 1 5 crop factor camera is.

Full frame and focal length does a crop sensor give you longer (vs full frame) focal lengths or narrower field of view of the same focal length my understanding is that is the same focal length but a much. 5d / 7d – full frame vs 1 6x – pros and cons – dvxuser.com — the for full-frame 35mm-format cameras, the diagonal is 43 mm and a typical “normal” lens has a 50 mm focal length a lens with a focal length shorter than normal is often referred to. Truncated frame – the photography network – picturesocial for full-frame 35mm-format cameras, the diagonal is 43 mm and a typical “normal” lens has a 50 mm focal length a lens with a focal length shorter than normal is often referred. Cinema5d.com view topic – crop sensor greater focal length i have a canon 40d which we know does not have a full frame because of which the effective focal length of the lens i use gets multiplied by 1 6 times somebody please educate me.