Quantaray Quantaray 28-80mm f3.5 Heritage

Overview

The Quantaray 28-80mm f/3.5 series belongs to a family of budget zoom lenses sold under the Quantaray house brand, which was a store label used by Ritz Camera stores. According to community knowledge in these reviews, Quantaray lenses were manufactured by Sigma (and reportedly others) at a lower quality tier than name-brand optics. The Pentax-mount 28-90mm f/3.5-5.6 'version 5' is described by reviewers as 'loosely based on the Sigma 28-80mm f3.5-5.6 series II lens, but altered to add 10mm on the long end.' A closely related 28-80mm f/3.5-4.5 MACRO variant and a 28-80mm f/3.5-5.6 MC Aspherical version also exist across Canon EF/EF-S, Sony/Minolta A, Nikon F, and Pentax K mounts, with first production listed as 1989 for the aspherical model. These were inexpensive consumer kit-grade zooms bought for a few dollars used. No established nicknames or cult jargon are evidenced in the reviews. There is no cult following as such; people buy these primarily because they are extremely cheap (average around $27) and fill a mid-range focal gap, not for any prized rendering.

Verdict: The Quantaray 28-80mm f/3.5 (and its 28-90mm and MACRO/aspherical siblings) is a rebadged Sigma-made budget consumer zoom sold through Ritz Camera. It is a cheap, plastic-bodied lens with modest sharpness, low contrast, dull colors, heavy flare, and misleading 'macro' capability. It is best suited to hobbyists who want an ultra-cheap mid-range zoom for casual use and don't mind fixing contrast and color in post. Anyone seeking sharpness, contrast, or a distinctive rendering character should look elsewhere.

Optical Character

Bokeh

Rated average with no distinctive swirl, bubbles, or creaminess.

Color

Dull, undersaturated colors requiring saturation boosts in post.

Sharpness wide open

Decent center sharpness on the Pentax version but softer than comparable kit zooms; the MACRO variant is soft even stopped down.

Flare resistance

Prone to heavy flare, with sun-facing shots described as nearly useless.

Contrast

Low contrast noted by multiple reviewers, requiring roughly +30 correction in post.

Community Insights

What people love

Extremely cheap to buy — often just a few dollars, average around $27, making it a low-risk purchase.
Good value for the money; 100% of Pentax reviewers recommended it as a budget option.
Fills the mid-range focal length gap between wide kit zooms and telephoto zooms.
Handling rated well (8.3 average on Pentax version) despite the modest optics.
Acceptable, usable results for casual shooting when the light is controlled and post-processing is applied.

What people dislike

Plastic lens mount on the Pentax version, which reviewers worried about breaking.
All-plastic body construction on the aspherical variant.
Softness, especially on the 28-80mm MACRO which is soft even stopped down.
Low contrast and dull colors needing heavy post-processing correction.
Heavy flare in bright light, rendering sun-facing shots nearly useless.
Noticeable chromatic aberration that needed cleanup even at f/8.
The 'MACRO' badge is misleading — closest magnification is only 1:4, so it is not a true macro.
Jittery focusing when used manually on adapted mirrorless bodies, with a low hit rate.

Pro Tips

Shoot with the sun behind you or shaded — this lens flares badly and loses usability near strong light.
Shoot RAW and plan to boost contrast (~+30), saturation, and sharpness in post to counter its dull, soft, low-contrast output.
Stop down for better sharpness; one reviewer noted it may improve toward f/11 though this was unconfirmed.
Use a tripod when working at the macro/close-up setting, as focusing is finicky and the setup benefits from stability.
Correct chromatic aberration in post, as it appears even at f/8.
On mirrorless adapters, expect fiddly manual focus and a low hit rate — take your time and confirm focus with magnification.

Sources (1)

Web-grounded synthesissecondary

The Quantaray 28-80mm f/3.5 series belongs to a family of budget zoom lenses sold under the Quantaray house brand, which was a store label used by Ritz Camera stores. According to community knowledge in these reviews, Quantaray lenses were manufactured by Sigma (and reportedly others) at a lower quality tier than name-brand optics. The Pentax-mount 28-90mm f/3.5-5.6 'version 5' is described by reviewers as 'loosely based on the Sigma 28-80mm f3.5-5.6 series II lens, but altered to add 10mm on the long end.' A closely related 28-80mm f/3.5-4.5 MACRO variant and a 28-80mm f/3.5-5.6 MC Aspherical version also exist across Canon EF/EF-S, Sony/Minolta A, Nikon F, and Pentax K mounts, with first production listed as 1989 for the aspherical model. These were inexpensive consumer kit-grade zooms bought for a few dollars used. No established nicknames or cult jargon are evidenced in the reviews. There is no cult following as such; people buy these primarily because they are extremely cheap (average around $27) and fill a mid-range focal gap, not for any prized rendering.

https://www.pentaxforums.com/userreviews/quantaray-28-90mm-f3-5-5-6-version-5.htmlhttps://www.talkemount.com/threads/quantaray-28-80mm-3-5-4-5-macro.8837/https://allphotolenses.com/lenses/item/c_3033.html