When digital photography arrived, it quietly inherited the shape of the 35 mm frame. Few people questioned it because the rectangle had already become photography’s visual language.

By the late 1970s, cameras like my first SLR, the Canon AE-1, were no longer specialty tools found only in camera shops. They were sitting in department stores like Sears, where many people, myself included, purchased their first serious camera. To me, that rectangular viewfinder increasingly resembled the television screen that had become the center of most American living rooms. The camera and the television were speaking the same visual language.

Looking back, I came to think of this as democratic design in the traditional industrial design sense. In other words, consumers vote with their wallets, and over time those choices become the standards that future designers inherit.

The 35 mm rectangle certainly became one of those standards, but it wasn’t the only one. During the same period, millions of families embraced the nearly square photographs produced by Polaroid cameras. Decades later, Fujifilm’s Instax cameras continue to prove that the public still finds the square format appealing. The square was never rejected by consumers. It simply wasn’t the path the digital camera industry chose to follow.

When digital photography emerged, manufacturers inherited the 35 mm rectangle because it was practical. Existing lenses, camera bodies, viewfinders, and decades of photographer experience all revolved around that familiar format. From an engineering and manufacturing standpoint, it made perfect sense. From a design standpoint, however, I have often wondered whether another path was possible.

What if history had taken a different turn?

What if digital cameras had been designed around the square instead?

Would we still rotate our cameras? Would we think differently about composition? And why, after all these years, has no one built a digital sensor the same size as the original Hasselblad 6×6 negative?

Hasselblad briefly revisited square digital capture with the CFV 16 digital back, whose 36.7 × 36.7 mm CCD sensor honored the company’s square heritage. But even Hasselblad stopped well short of recreating the original V System’s approximately 56 × 56 mm image area, the exposed portion of a 6×6 cm film frame. The technical and economic challenges of manufacturing a true 6×6 cm digital sensor remained too great.

If digital technology has advanced so dramatically, why has no one built a sensor that fully embraces the classic 6×6 format?

The answer isn’t that manufacturers can’t.

It’s that, for reasons both economic and practical, they probably shouldn’t.

Bigger Sensors Are Harder to Manufacture

Unlike film, digital sensors are manufactured from large, circular silicon wafers.

Imagine baking a large round pizza and trying to cut identical square slices from it. The larger each square becomes, the fewer you can cut from the pizza, and the more dough is left around the edges that cannot be used.

The same principle applies to image sensors.

Every sensor cut from a wafer carries a manufacturing cost. Smaller sensors allow manufacturers to produce many more sensors from a single wafer. A true 6×6 sensor would consume so much silicon that comparatively few could be produced from each wafer, while a significant amount of the wafer itself would simply become waste.

Before the camera is even assembled, its most expensive component has already become dramatically more costly to manufacture.

Size Brings Another Problem

Every wafer contains microscopic defects that occur naturally during manufacturing. Most never become an issue, but if even one falls within the area of a sensor, that entire sensor may have to be discarded.

As sensors become larger, the likelihood of encountering one of these defects increases significantly.

This means manufacturers not only produce fewer large sensors from each wafer, but they also lose a greater percentage of them during quality control.

In semiconductor manufacturing, this is known as yield, the percentage of usable sensors produced from a wafer. As sensor size increases, yield generally decreases.

For manufacturers, declining yield is one of the primary reasons very large sensors become so expensive.

Film Didn’t Have This Problem

Film certainly became more expensive as formats grew larger, but the economics were very different.

Whether you photographed 35 mm, a 6×6 Hasselblad transparency, or a sheet of 4×5 film, increasing the image area did not dramatically increase the cost of manufacturing the camera itself.

Digital changed that completely.

Today, the sensor is one of the most expensive components inside a camera, and its manufacturing cost rises disproportionately as it becomes larger. The economics of digital imaging are fundamentally different from those of film.

Why the Market Moved Away from the Square

One of the beautiful characteristics of the Hasselblad V System is that you compose on a square ground glass.

As both a photographer and graphic designer, I have always appreciated the square as a design space. It postpones the decision between horizontal and vertical, allowing the composition to develop before the final format is chosen. Many photographers who worked with the Hasselblad V System describe the experience the same way. The square feels balanced, deliberate, and surprisingly liberating.

But photography has changed.

Today’s photographers create images for websites, social media, advertising, and video, nearly all of which favor rectangular formats. High-resolution digital cameras also make cropping remarkably easy, allowing a single image to become square, horizontal, or vertical with very little loss in quality.

As a result, relatively few photographers would be willing to pay the substantial premium required for a true 6×6 digital sensor when a rectangular sensor already provides so much flexibility.

The Lenses Would Need to Keep Up

Creating a larger sensor is only part of the challenge.

The lenses must also project a sharp image across the entire sensor.

While many classic Hasselblad V lenses beautifully cover the original 6×6 film frame, modern high-resolution digital sensors are often more demanding than film. They reveal optical imperfections more readily, particularly toward the edges of the image.

It is worth noting, however, that many classic medium and large-format lenses have already demonstrated exceptional performance on modern digital sensors. Numerous Hasselblad V lenses, select Mamiya 6×7 lenses, and many Schneider, Rodenstock, and Nikkor large-format lenses continue to produce outstanding results on today’s 50 and even 100-megapixel digital backs. In fact, several lenses originally designed for large-format film were later refined and adapted specifically for digital use.

I have photographed extensively with Hasselblad V lenses and have also used Nikkor, Schneider, and Rodenstock 4×5 lenses on my own 50-megapixel digital back with excellent results. Their performance is a reminder that many classic optical designs remain remarkably capable decades after they were introduced.

Even so, a manufacturer introducing a new 56 × 56 mm digital camera would almost certainly design and certify lenses specifically for that system, ensuring consistent corner-to-corner performance at the sensor’s intended resolution. Developing those lenses would add significantly to both the size and cost of the entire system.

Today’s Medium Format Is a Practical Compromise

Modern medium format cameras generally use sensors measuring approximately 44 × 33 mm or approximately 54 × 40 mm.

While neither approaches the image area of a true 6×6 frame, both deliver much of what photographers appreciate about larger formats: excellent dynamic range, beautiful tonal transitions, outstanding color, and exceptional resolution.

Just as importantly, these sensor sizes represent a practical balance between performance and manufacturing reality. They can be produced in sufficient quantities and at costs that, while certainly premium, remain attainable for many professionals and serious enthusiasts.

For most photographers, they offer the best of both worlds: much of the aesthetic appeal of traditional medium format without the extraordinary cost and engineering challenges of a true 56 × 56 mm digital sensor.

Cropping Has Changed the Conversation

Digital photography has also changed the way photographers think about aspect ratio.

During the film era, choosing a camera often meant choosing an aspect ratio. A Hasselblad encouraged square compositions, while a 35 mm camera naturally favored the rectangle.

Today, that decision is often postponed until after the photograph has been made. A sufficiently high-resolution sensor allows a single image to become square, horizontal, vertical, or even panoramic with very little sacrifice in image quality.

That flexibility has greatly reduced the demand for a dedicated square sensor. For many photographers, cropping has become the modern equivalent of choosing a format.

Could Someone Build One?

Absolutely.

Companies such as Sony almost certainly possess the technical expertise to manufacture a digital sensor approaching the size of the original Hasselblad 6×6 frame.

The real question has never been whether it is possible.

The question is whether enough photographers would purchase such a camera to justify the enormous research, manufacturing, and production costs. Based on today’s market, the answer appears to be no.

What fascinates me most is not that manufacturers chose the rectangle. It’s that, once digital photography arrived, almost no one questioned it. We accepted the inherited shape of the 35 mm frame as though it were inevitable.

Yet photography has always been richer than a single aspect ratio. The square, the panorama, and large format each encourage us to see differently. Camera design doesn’t simply record our vision. It quietly influences the way we see.

A Photographer Can Still Dream

There is something undeniably appealing about the idea of a modern Hasselblad digital back containing a true square sensor matching the dimensions of the original 6×6 film frame.

It would preserve the familiar experience of composing on a square ground glass while capturing every millimeter of the image the classic cameras were designed to produce.

Would it be expensive?

Without question.

Would it make economic sense for the manufacturer?

Probably not.

But for photographers who have spent decades looking down into the waist-level finder of a Hasselblad, it remains one of those wonderful “what if” ideas that refuses to disappear.

Perhaps the greatest achievement of digital photography is not that it recreated every film format exactly as it existed. Rather, it found practical compromises that delivered extraordinary image quality to far more photographers than ever before.

Even so, I can’t help wondering what might have happened if camera engineers had begun with a blank sheet of paper instead of inheriting the 35 mm rectangle. We may never see a true digital replacement for the classic 6×6 Hasselblad frame, but that possibility reminds us that camera design is never merely technical. The cameras we use shape not only the photographs we make, but also the way we learn to see.

And perhaps that’s why the dream of a true digital 6×6 Hasselblad refuses to fade.

A Personal Note

If you’ve been following my series on using the Hasselblad FlexBody in the digital age, you may have wondered why this article appeared before the final installment. The answer is simple. While working through the FlexBody project, I found myself revisiting an old dream: a true 6×6 digital sensor. That journey ultimately led me to a different conclusion. Rather than investing in a higher-resolution digital back, I chose a Cambo Actus, which opens new creative possibilities while making the most of the Hasselblad and ALPA lenses I already own.

The final FlexBody article will explain that decision in much greater detail. But before we get there, I felt this story needed to be told first.