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Realizing the Potential of iPhone 15 Pro Max’s 5x Zoom Lens with GlassAI: A Leap Towards Photographic Excellence

Written by
Doug MacEwen
Published on
October 27, 2023

The iPhone 15 Pro Max has made waves in the tech community with its remarkable 5x zoom lens with a unique penta-prism design - a feature that sets it apart in the realm of mobile photography. With an F/2.8 aperture and 120mm equivalent focal length, this lens boasts impressive technical specifications promising detailed imagery even from a distance.

However, the full potential of this hardware is limited as the accompanying software from Apple doesn't extract all the detail this lens can capture. In this post, we compare the default processing of the iPhone 15 Pro Max with the advanced processing by GlassAI — a revolutionary advancement in camera ISP software using efficient edge neural networks — demonstrating a significant improvement in image quality on the 5x lens. See for example the shot below that exemplifies this difference:

Left: image as captured by the 5x lens on the iPhone 15 Pro Max, as output by Apple’s default image processing software on the device. Right: the same shot as rendered by GlassAI software

Left: detail of an image as captured by the 5x lens on the iPhone 15 Pro Max (cropped), as output by Apple’s default image processing software on the device. Right: the same shot as rendered by GlassAI software, showing the additional resolution, texture detail and clarity that can be extracted from this amazing 5x lens hardware, with the right software processing.

A closer look at Apple’s new hardware

Apple's 5x zoom lens on the iPhone 15 Pro Max is a marvel of optics and engineering. Its features include:

1. Higher Optical Magnification: The lens provides 5x optical zoom, ensuring sharp images even when zooming in on distant objects.

2. Enhanced Light Gathering: A large aperture, combined with an innovative optical design, captures more light, ensuring well-lit scenes even in challenging low-light conditions.

3. Sensor Shift Image Stabilization: The lens has built-in stabilization to counteract camera shake - this ensures clear shots even at full zoom.

4. Superior Resolution: Pairing the new lens construct with the phone’s sensor enables high-resolution image capture, preserving all the details that matter.

These are certainly standout characteristics of the iPhone 15 Pro Max’s hardware. However, it is crucial to note that while the hardware is undoubtedly advanced, the native software from Apple occasionally falls short of harnessing the full capabilities of the hardware. This can potentially lead to a compromise in the richness and detail of the captured images.

Apple’s Rich Legacy in Image Processing

Historically, Apple has been a trailblazer in mobile photography. A testament to their dedication, as highlighted by MacRumors in January 2021, is that "Apple now has over 800 engineers solely focused on the iPhone's camera." These engineers work tirelessly for months to hone the image processing algorithms of the iPhone. Their efforts have aimed at overcoming challenges like noise, color inaccuracies, and sharpness to deliver photos that are both realistic and aesthetically pleasing, using many rounds of feedback and incremental tuning.

Despite these advancements, there's significant room for improvement. This is where Glass Imaging introduces its groundbreaking technology. Our AI-driven method requires only a few days of automated training when a new device is released, yet it surpasses the results of traditional image processing techniques that take large engineering teams months to refine. Results from Glass’ AI technology exhibit far greater robustness to noise while maintaining fine details with higher fidelity.

Advancing Image Processing with GlassAI

Glass Imaging harnesses the power of artificial intelligence to get the most from the raw image burst data - the unprocessed sensor information captured during a shot. This AI centric approach allows for intelligent decisions on image enhancement, going beyond the limitations of traditional handcrafted algorithms. Beyond mere clarity, the AI-centric method excels in advanced denoising while ensuring textures are preserved with high fidelity, as illustrated in the following comparisons:

Left: iPhone 15 Pro 5x default rendering Right: the same shot with GlassAI applied. Note the increased detail on the fabric and reduced noise.

Left: iPhone 15 Pro 5x default rendering Right: the same shot with GlassAI applied. Note the enhanced texture detail and richer colors.

Left: iPhone 15 Pro 5x default rendering. Right: the same shot with GlassAI applied. Note the enhanced texture detail and richer colors.

What sets GlassAI apart?

In the evolving landscape of smartphone photography, attributes like precision, clarity, and speed hold significant importance. GlassAI, with its innovative approach, offers a balance of these elements to photography enthusiasts. What differentiates GlassAI from other imaging solutions on the market? Let's delve into the distinct features:

1. Raw Burst Data Analysis: GlassAI instantly analyzes the raw data, grasping the nuances of light, color, and exposure, and brings out details that are often missed by default processing.

2. Rapid Neural Network Training: Where conventional algorithms demand laborious development and tuning, GlassAI’s training is quick, slashing the time to optimal image processing from months to days.

3. Real-time Processing on Devices: Our new AI model processes images on mobile devices almost instantly, rivaling or even surpassing conventional methods in speed.

4. Adaptable and Efficient: The AI seamlessly adapts to varying lighting conditions, ensuring superior quality irrespective of the photographic scenarios.

5. Consistent Image Quality: Be it a candid shot or an expertly captured photograph, GlassAI guarantees high fidelity and exceptional quality across the board.

Left: iPhone 15 Pro 5x default rendering Right: the same shot with GlassAI applied. Note the increased texture detail, lower noise, and better color rendering.
Left: iPhone 15 Pro 5x default rendering Right: the same shot with GlassAI applied. Note the increased texture detail, lower noise, and better color rendering.
Left: iPhone 15 Pro 5x default rendering Right: the same shot with GlassAI applied. Note the increased texture detail, lower noise, and better color rendering, especially of small details.

Keeping it real: Avoiding hallucinations

Apple likely incorporates neural networks into some of iPhone’s image processing components. However, there remains room for improvement as, in certain scenarios, the shortcomings are evident. Some neural network designs can occasionally introduce anomalies or "hallucinate" details. At Glass, we place a strong emphasis on ensuring our Neural Networks are trained to accurately reproduce authentic details. Elements like text are often susceptible to such distortions, as illustrated in the following examples:

Left: iPhone 15 Pro Max 5x default rendering. Note the strange text artifacts and noise. Right: the same shot with GlassAI applied, with clear and accurate text details, along with fine and realistic texture on the metal.

Left: iPhone 15 Pro Max 5x default rendering. Note the strange text artifacts, noise, and lack of color fidelity. Right: the same shot with GlassAI applied, with clear and accurate text details and fine realistic texture on the fabric visible.

In Conclusion

Glass Imaging's AI-driven approach offers a glimpse into the future of smartphone photography. By integrating AI insights with real-time processing, and tapping into the capabilities of hardware such as the iPhone 15 Pro Max's 5x zoom lens, GlassAI achieves superior quality results. We have reached the point where a well architected AI solution outperforms traditional algorithms with near-instantaneous run-times and significantly shorter training timelines. AI solutions like GlassAI are leading the industry toward the bright future of smartphone photography.