Tamron AF 18-250mm f3.5-6.3 II LD is a Variable aperture Auto Focus (AF) Super Telephoto Zoom
lens with APS-C / DX max sensor coverage, and it is designed to be used with Pentax KAF mount cameras.
Lenses in Pentax KAF Mount with Same Focal and Aperture Range
Tamron AF 18-250mm f3.5-6.3 II LD is compatible with cameras that have Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III, Pentax KP and Pentax K-70.
Tamron AF 18-250mm f3.5-6.3 II LD is also available in Canon EF , Nikon F (DX) and Sony Alpha mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Tamron AF 18-250mm f3.5-6.3 II LD has a maximum diameter of 74mm and total length of 84mm when not extended .
Tamron AF 18-250mm f3.5-6.3 II LD has a filter thread of 62mm.
Tamron AF 18-250mm f3.5-6.3 II LD has a focal range of 18-250mm and 13.9X zoom ratio which has a 35mm equivalent focal range of 27-375mm when used on a APS-C / DX format camera.
Optical Image Stabilization
Tamron AF 18-250mm f3.5-6.3 II LD doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Sigma 18-300 F3.5-6.3 DC OS HSM , Sigma 18-200mm F3.5-6.3 DC OS HSM C and Sigma 18-250mm F3.5-6.3 DC OS HSM. in Pentax KAF mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to Tamron AF 18-250mm f3.5-6.3 II LD With Optical Image Stabilization
Tamron AF 18-250mm f3.5-6.3 II LD features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Tamron AF 18-250mm f3.5-6.3 II LD has a Zoom lock feature which eliminates Zoom creep where focal length of the lens changes with gravity when it's held downwards or upwards.
Tamron AF 18-250mm f3.5-6.3 II LD is a variable aperture lens with a max aperture of f3.5 and a minimum aperture of f22 at 18mm, and a max aperture of f6.3 and minimum aperture of f22 at 250mm .
Tamron AF 18-250mm f3.5-6.3 II LD's optical formula consists of 16 elements in 13 groups . Following special elements are used in this design:
- 1 AD element
- 2 LD elements
- 2 Hybrid aspherical element
Tamron AF 18-250mm f3.5-6.3 II LD comes with a removable petal shaped lens hood which is handy to reduce lens flare and glare in your photos.
Tamron AF 18-250mm f3.5-6.3 II LD is available in Black color.
Popular Comparisons of Tamron AF 18-250mm f3.5-6.3 II LD
Here is the eight most popular comparisons of Tamron AF 18-250mm f3.5-6.3 II LD amongst Camera Decision readers.