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Description
Rokinon 85mm f/1.4 AS IF UMC Lens for Pentax KPentax K Mount Lens Full Frame Format Aperture Range: f 1. 4 to f 22 One Hybrid Aspherical Element Ultra Multi Coating Internal Focus; Manual Focus Design Rounded 8 Blade Diaphragm An ideal portrait length prime, the Pentax K mount 85mm f 1. 4 AS IF UMC from Rokinon pairs a bright, fast f 1. 4 maximum aperture with a short telephoto focal length to suit portraiture and other applications where shallow depth of field is desired. This manual focus lens
- Pentax K Mount Lens/Full-Frame Format
- Aperture Range: f/1.4 to f/22
- One Hybrid Aspherical Element
- Ultra Multi-Coating
- Internal Focus; Manual Focus Design
- Rounded 8-Blade Diaphragm
An ideal portrait-length prime, the Pentax K mount 85mm f/1.4 AS IF UMC from Rokinon pairs a bright, fast f/1.4 maximum aperture with a short-telephoto focal length to suit portraiture and other applications where shallow depth of field is desired. This manual focus lens incorporates one hybrid aspherical element to control chromatic aberrations for increased clarity and even sharpness and illumination. An Ultra Multi-Coating has also been applied to lens elements to reduce lens flare and ghosting for increased contrast and color neutrality. This lens is also characterized by an internal focusing design, which maintains the overall length during use, as well as an 8-blade rounded diaphragm for a smooth bokeh quality.
- This 85mm f/1.4 lens features a Pentax K mount, and is compatible with full-frame and 35mm film cameras, as well as APS-C sensors where it will provide a 127.5mm equivalent focal length.
- A fast f/1.4 maximum aperture benefits working in difficult lighting conditions and also enables extensive control over your focus position for shallow depth of field shooting.
- One hybrid aspherical element helps to control chromatic aberrations and distortions for increased clarity and sharpness.
- An Ultra Multi-Coating has been applied to lens elements to reduce lens flare and ghosting for increased contrast and color fidelity.
- This manual focus lens features an internal focus design to maintain the overall lens length during use and the front filter mount does not rotate when focusing to better enable working with polarizers, graduated ND, and other filter types that require precise positioning.
- A rounded eight-blade diaphragm contributes to a pleasing out-of-focus quality when using selective focus or shallow depth of field techniques.
- This lens features a mechanical aperture coupling that permits the use of aperture priority and automated exposure modes, as well as the ability to control the aperture setting with Pentax DSLRs.
UPC: 084438159554
| Performance | |
|---|---|
| Focal Length | 85mm |
| Aperture | Maximum: f/1.4 Minimum: f/22 |
| Camera Mount Type | Pentax K |
| Format Compatibility | 35mm Film / Full-Frame Digital Sensor Pentax Digital (APS-C) |
| Angle of View | 28.3° |
| Minimum Focus Distance | 3.28' (1 m) |
| Elements/Groups | 9/7 |
| Diaphragm Blades | 8, Rounded |
| Features | |
|---|---|
| Autofocus | No |
| Physical | |
|---|---|
| Filter Thread | Front: 72 mm |
| Dimensions (DxL) | Approx. 3.07 x 2.88" (78 x 73.2 mm) |
| Weight | 17.99 oz (510 g) |
| Packaging Info | |
|---|---|
| Package Weight | 1.9 lb |
| Box Dimensions (LxWxH) | 9.9 x 5.7 x 4.3" |
In the Box
Rokinon 85mm f/1.4 AS IF UMC Lens for Pentax K
- Front and Rear Lens Caps
- Lens Hood
- Lens Pouch
- Limited 1-Year Warranty
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 938 reviews
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Product Reviews
★★★★★ 5
Thick seat cushion
Color: Grey
This double-layer seat cushion is so comfortable! Before, my lower back would ache after just an hour on a hard bench, but now I can work in this chair for most of the day without feeling tired. The PU leather has a great texture, looks high-end, and is incredibly easy to maintain—just wipe it down with a cloth when it gets dirty. It feels smooth and breathable. The 360-degree swivel is very smooth, making it convenient to reach for documents in the office. The casters roll quietly and won’t scratch the floor. For anyone who spends a lot of time working at a desk, the comfort level at this price point is absolutely worth it. I highly recommend it.
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Reviewed in the United States on March 26, 2026
★★★★★ 3
Meh
Color: Black
It's ok. I got it because it looked like it has more cushion and might be more comfortable. Nope. It's the same comfort level as different chairs. My reer still goes numb and gets uncomfortable in this chair. Also, where your arms sit, the chair arms are slightly curved upwards and it causes my chair to be unable to fit under my desk. If they weren't slightly curved, that wouldn't happen. It's just another chair, nothing spectacular.
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Reviewed in the United States on June 13, 2026
★★★★★ 5
Perfect for work
Color: Grey
Great quality office chair. Easy to put together as there is minimal assembly required with easy to follow instructions. The chair has many sitting options. Makes for a perfect chair to use all day long. Its an ergonomic chair that allows you to adjust tilt tension, arm rest height, chair height, and allows to actually move arm rest upward and out of the way. You can swivel and sway and roll around with ease. Perfect chair for sitting all day. The head rest provides great neck support and the padding is very comfortable and supportive. The wheels are strong and the entire chair is sturdy. Quality material, The cushion is made with memory foam as well as comfort foam. Such a quality chair. This is a great value for the money. I would recommend to anyone that sits for any period of time for work or otherwise .
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Great chair for everyday use
I’m really happy with this ergonomic chair. It was easy to put together and feels very sturdy once assembled. The mesh back is breathable and keeps my back cool even after sitting for hours. The seat cushion is comfortable and supportive, and the armrests are positioned well for working at a desk. I also like how smoothly the wheels roll and how easy it is to adjust the height. For the price, the quality is honestly better than I expected. I’ve been using it every day for work and it makes long sitting sessions much more comfortable. Definitely a great value and I would recommend it.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Excellent quality, comfortable for 8+ hour days
Color: Grey, Color: Grey
Since the reviews here were so very helpful to me, I decided to leave my own after using this chair a couple days.
To summarize: Overall, I am thrilled with this chair and would recommend! I work remote, in a small apartment and this works well for both space saving and silence when rolling over hardwood floors all day. For more details, read on!
It came packaged very nicely, so everything was well protected during shipping. There are no written instructions and to be honest, I didn't even look for them. If you've put one together before, this is pretty standard. The "leather" (not genuine, but feels like it) is thick and seems it will be sturdy for a long time. The padding is exceptional and that's the main reason I needed a new chair, as mine (a 'basic' brand one, IYKYK) only lasted one year before it felt like sitting on a hard plastic seat. The height is adjustable to go up higher than most, so for once I didn't have to raise it all the way to feel comfy. The surprisingly great thing about it is the arms that flip up, so I can push it all the way under my desk. I live in a small apartment, so every bit of space saved is a bonus! Speaking of apartments, the wheels on this are whisper quiet and I'm more than certain the neighbor below me is thrilled to not hear my clunky wheels from the other chair anymore. I was hesitant to pay too much for an office chair, but given the price and the quality, I feel it was an excellent purchase.
A few items to note, if you have never put one together before: hand tighten the screws first! Don't put them on full force, until the pieces have been mostly assembled. This will help it not come out lopsided and the holes will be a little easier to line up. Watch the video, it will make the process a little easier (unlike what I did - put the arms on correctly, thought that looked wrong, then put them on backwards and lost my mind LOL). The video will also show how to recline the chair, if you like that (I do). It has a recline that's smooth as butter.
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Reviewed in the United States on March 11, 2026
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