Kelda 6.5mm F/3.5 Aspherical Fisheye CS
Fisheye lens • Digital era • Discontinued
- Announced:
- · No data
- Production status:
- ● Discontinued
- Country of design:
- · PRC (People's Republic of China)
- Original name:
- · 6.5mm 1:3.5 FISH-EYE CS ASPHERICAL
- Class:
- · Slow APS-C-format diagonal fisheye lens
Abbreviations
| FISHEYE | An ultra-wide angle lens with strong uncorrected barrel distortion and extreme angle of view. |
Specification
| Optical design: | |
| APS-C | |
| 6.5mm | |
| F/3.5 | |
| 10 elements in 7 groups | |
| 1 ASPH | |
| Diagonal (full-frame) fisheye | |
| Canon EF [44mm] | |
| Nikon F [46.5mm] | |
| 180° | |
| Diaphragm mechanism: | |
Diaphragm type: | Manual |
Aperture control: | Aperture ring |
| 6 (six) | |
| Focusing: | |
| 0.30m | |
| <No data> | |
Focusing modes: | Manual focus only |
Manual focus control: | Focusing ring |
| Physical characteristics: | |
| 516g (mount not specified) | |
| ⌀83.3×72mm (mount not specified) | |
| - | |
| - | |
| Accessories: | |
| Removable front filters are not accepted | |
| Bayonet-type petal-shaped | |
| Not available |
Source of data
- Manufacturer's technical data.
Manufacturer description
The KELDA Ultra Fisheye Lens is an excellent addition to any photographer's collection. The special fisheye design allows maximum creative expression. Corrects aberrations using a complex aspherical lens. When fully open, it prioduces both high resolution and contrast at the centre of the frame, as well as around the periphery.
Used with an APS-C (1:1.5x) image sensor DSLR the 180 deg. angle of view of the lens can be used to create amazing image expressions that cannot be seen by the human eye such as exaggerated perspective and distortion. The minimum shooting distance (just 12 in.) and large depth of field also provide exceptional close-up shots. The KELDA's super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras. It also creates an optimum colour balance. All in a robustigrid aluminium base frame.
With the removable bayonet lens hood the KELDA 6.5mm f3.5 Fish-eye can be used on FULL FRAME DSLRs.
Typical characteristics of fisheye lenses
- Extreme angle of view (at least 180° diagonally);
- Circular types (the image circle of the lens is inscribed in the image frame) or diagonal types (cover the entire image frame);
- Usually of equidistant projection type, with the distance from the picture center to any given point always proportional to the angle from the optical axis to that point;
- Huge barrel distortion;
- Short closest focusing distance (0.20 - 0.30m with 35mm full-frame prime lenses);
- Very large depth of field, eliminating the need for autofocus or precise manual focusing;
- Due to the extreme angle of view and convex front element, front filters cannot be used;
- Often equipped with a filter turret with swivel-mounted filters;
- Often come with a small, built-in petal-shaped lens hood (*).
(*) Some APS-C models have a detachable lens hood, which allows such lenses to be used on 35mm full-frame cameras as circular fisheyes.
From the editor
As the Kelda 8/3.5 Fisheye CS, but with a diagonal angle of view of 180°.
Lenses with similar focal length
| ■Canon EF mount (1) | |||||||||
| Zenitar 8mm F/3.5 Fisheye MC | A | 8 - 6 | 0.15m | -- | 2016 ● | ||||
| ■Canon EF mount (8) · APS-C | |||||||||
| 7Artisans 7.5mm F/3.5 Fisheye | M | 11 - 8 | 0.29m | -- | 2023 ● | ||||
| Lensbaby 5.8mm F/3.5 Fisheye SLR | M | 8 - 5 | -- | 2014 ● | |||||
| Meike 8mm F/3.5 Fisheye CS SLR | M | 11 - 8 | 0.10m | -- | 2016 ● | ||||
| Samyang 8mm F/3.5 CS AS IF Fisheye MC akaBower 8mm F/3.5 CS AS IF Fisheye MC akaRokinon 8mm F/3.5 CS AS IF Fisheye MC akaVivitar Series 1 8mm F/3.5 CS AS IF Fisheye MC akaWalimex Pro 8mm F/3.5 CS AS IF Fisheye MC | M | 10 - 7 | 0.30m | -- | 2009 ● | ||||
| Samyang 8mm F/3.5 CS AS IF Fisheye UMC II DH akaBower 8mm F/3.5 CS AS IF Fisheye UMC II DH akaRokinon 8mm F/3.5 CS AS IF Fisheye UMC II DH akaVivitar Series 1 8mm F/3.5 CS AS IF Fisheye UMC II DH akaWalimex Pro 8mm F/3.5 CS AS IF Fisheye UMC II DH | M | 10 - 7 | 0.30m | -- | 2012 ● | ||||
| Sunex 5.6mm F/5.6 Super Fisheye | -- | ? - ? | 1.00m | -- | 2007 ● | ||||
| Risespray 8mm F/3 Fisheye CS SLR akaJintu 8mm F/3 Fisheye CS SLR | M | 10 - 7 | 0.10m | -- | ● | ||||
| Kelda 8mm F/3.5 Fisheye CS akaDorr 8mm F/3.5 Fisheye CS akaNeewer 8mm F/3.5 Fisheye CS | M | 10 - 7 | 0.30m | -- | ● | ||||
| ■Nikon F mount (13) | |||||||||
| Nikon AI-S Fisheye-Nikkor 8mm F/2.8 | A | 10 - 8 | 0.30m | -- | 1981 ● | ||||
| Nikon AI-S Fisheye-Nikkor 6mm F/2.8 | A | 12 - 9 | 0.25m | -- | 1982 ● | ||||
| Nippon Kogaku / Nikon Fisheye-Nikkor 6mm F/5.6 | M | 9 - 6 | -- | 1970 ● | |||||
| Nikon Fisheye-Nikkor Auto 6mm F/2.8 | A | 12 - 9 | 0.25m | -- | 1970 ● | ||||
| Nikon AI Fisheye-Nikkor 6mm F/2.8 | A | 12 - 9 | 0.25m | -- | 1977 ● | ||||
| Nippon Kogaku Fisheye-Nikkor 8mm F/8 | M | 9 - 5 | -- | 1962 ● | |||||
| Nippon Kogaku Fisheye-Nikkor 7.5mm F/5.6 | M | 9 - 6 | -- | 1966 ● | |||||
| Nippon Kogaku / Nikon Fisheye-Nikkor Auto 8mm F/2.8 | A | 10 - 8 | 0.30m | -- | 1970 ● | ||||
| Nikon AI Fisheye-Nikkor 8mm F/2.8 | A | 10 - 8 | 0.30m | -- | 1977 ● | ||||
| Sigma MF 8mm F/4 Fisheye | A | 10 - 6 | 0.20m | -- | 1988 ● | ||||
| Sigma MF 8mm F/4 Fisheye ZEN | A | 10 - 6 | 0.20m | -- | 1992 ● | ||||
| Sigma MF 8mm F/4 Filtermatic Fisheye | A | 11 - 7 | 0.20m | -- | 1982 ● | ||||
| Zenitar 8mm F/3.5 Fisheye MC | A | 8 - 6 | 0.15m | -- | 2016 ● | ||||
| ■Nikon F mount (6) · APS-C | |||||||||
| 7Artisans 7.5mm F/3.5 Fisheye | M | 11 - 8 | 0.29m | -- | 2023 ● | ||||
| Lensbaby 5.8mm F/3.5 Fisheye SLR | M | 8 - 5 | -- | 2014 ● | |||||
| Meike 8mm F/3.5 Fisheye CS SLR | M | 11 - 8 | 0.10m | -- | 2016 ● | ||||
| Sunex 5.6mm F/5.6 Super Fisheye | -- | ? - ? | 1.00m | -- | 2007 ● | ||||
| Risespray 8mm F/3 Fisheye CS SLR akaJintu 8mm F/3 Fisheye CS SLR | M | 10 - 7 | 0.10m | -- | ● | ||||
| Kelda 8mm F/3.5 Fisheye CS akaDorr 8mm F/3.5 Fisheye CS akaNeewer 8mm F/3.5 Fisheye CS | M | 10 - 7 | 0.30m | -- | ● | ||||
| ■Interchangeable mount (2) | |||||||||
| BelOMO Peleng A 8mm F/3.5 Fisheye MC [T] | P | 11 - 6 | 0.22m | -- | ● | ||||
| Spiratone 7mm F/5.6 Fisheye [T] akaHanimex 7mm F/5.6 Fish-eye | P | ? - ? | -- | ● | |||||