Rokinon
Rokinon 100M-P 100mm F2.8 Macro Lens Pentax
★★★★★
f/2.8f/32
Capture Stunning Macro and Telephoto ShotsThe Rokinon 100mm F2.8 ED UMC Macro Telephoto Lens. This versatile lens combines telephoto and macro capabilities, allowing you to capture stunning portraits and detailed close-up shots. With its high-quality optics and smooth bokeh, it's an excellent add...
$499.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Capture Stunning Macro and Telephoto Shots
The Rokinon 100mm F2.8 ED UMC Macro Telephoto Lens. This versatile lens combines telephoto and macro capabilities, allowing you to capture stunning portraits and detailed close-up shots. With its high-quality optics and smooth bokeh, it's an excellent addition to any photographer's kit.
Specifications
- Focal Length: 100mm
- Aperture: F2.8
- Elements: ED Glass
- Coating: UMC (Ultra Multi-Coating)
- Diaphragm: 9-Blade Circular
- Focusing: Close Focusing to 1 Foot
- Reproduction Ratio: 1:1 (Life Size)
- Mount: Pentax Digital SLR Cameras
Key Features
This 100mm f/2.8 lens features a Sony E mount and is compatible with full-frame sensors or APS-C sensors where it will provide a 150mm equivalent focal length. | A bright f/2.8 maximum aperture is useful for working in a variety of lighting conditions and the minimum f/32 aperture helps to attain a long depth of field when working with close-up subjects. | One high refractive index element and one extra-low dispersion element help to control chromatic aberrations and minimize distortions throughout the focusing and aperture ranges. | An Ultra Multi-Coating has been applied to lens elements to reduce lens flare and ghosting for increased clarity contrast and color fidelity. | Featuring a macro design this lens affords a 1:1 maximum magnification ratio along with a minimum focusing distance of 1'. | Benefiting working with especially close subjects this manual focus lens features an internal focus design to maintain the overall lens length during use. Additionally the front filter mount does not rotate when focusing to better enable the use of polarizers graduated ND and other filter types that require precise positioning. | A rounded nine-blade diaphragm contributes to a pleasing out-of-focus quality when using selective focus or shallow depth of field techniques.
Specifications
Focal Length
100mm
Maximum Aperture
f/2.8
Minimum Aperture
f/32
Mount Type
Pentax
Maximum Magnification Ratio
1:1
Minimum Focusing Distance
1'
Elements
One High Refractive Index, One Extra-Low Dispersion
Coating
Ultra Multi-Coating
Diaphragm Blades
Nine (rounded)
Focus Type
Manual Focus
Focusing System
Internal Focus
Pros & Cons
👍 Pros
- This Rokinon 100mm f/2.8 Macro Lens features a 1:1 maximum magnification ratio, enabling true macro photography of close-up subjects.
- Its bright f/2.8 maximum aperture is beneficial for working in various lighting conditions and achieving shallow depth of field.
- The lens incorporates one high refractive index element and one extra-low dispersion element to control chromatic aberrations and minimize distortions.
- An Ultra Multi-Coating applied to the lens elements works to reduce flare and ghosting, enhancing clarity, contrast, and color fidelity.
- The internal focus design maintains the overall lens length during use, which is advantageous when working with especially close subjects.
- The front filter mount does not rotate while focusing, simplifying the use of polarizers and other specific filter types.
- A rounded nine-blade diaphragm contributes to a pleasing out-of-focus quality, or bokeh, for artistic depth of field.
👎 Cons
- This is a manual focus lens, which may require more precision and time compared to autofocus systems.
- The lens has a minimum aperture of f/32, which can introduce diffraction and reduce sharpness at its smallest setting.
- As a prime macro lens, it does not offer the versatility of a zoom lens for different focal lengths.
- While compatible with full-frame and APS-C sensors, its 150mm equivalent focal length on APS-C might be too telephoto for some macro applications.
- The lens is specifically designed for Pentax mount, limiting its direct compatibility with other camera systems.
Frequently Asked Questions
What type of photography is this Rokinon 100mm lens best suited for?
This lens is primarily designed for macro photography, offering a 1:1 maximum magnification ratio and a minimum focusing distance of 1', making it excellent for detailed close-up shots.
Does this lens feature autofocus?
No, this Rokinon 100mm f/2.8 lens is a manual focus lens, requiring the user to adjust focus manually.
Can this lens be used in low light conditions?
Yes, with a bright f/2.8 maximum aperture, this lens is useful for working effectively in a variety of challenging lighting conditions.
How does this lens minimize optical imperfections like chromatic aberration?
The lens incorporates one high refractive index element and one extra-low dispersion element specifically to control chromatic aberrations and minimize distortions across focusing and aperture ranges.
Will using filters be difficult with this lens due to rotating elements?
No, the manual focus lens features an internal focus design where the front filter mount does not rotate, which simplifies the use of polarizers, graduated ND, and other filters requiring precise positioning.
What kind of "bokeh" or background blur can I expect from this lens?
A rounded nine-blade diaphragm is included, which contributes to a pleasing out-of-focus quality when employing selective focus or shallow depth of field techniques.
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