“Modern optics are no longer the weak link – today’s best lenses are precision instruments, engineered not just to capture light, but to fully honour every pixel a sensor can see.” – MJ Martin
Does the current mirrorless lens technology match the superior resolution capabilities of the latest generation of camera sensors?
Conventional 35mm Format Digital Cameras
The rapid evolution of digital camera sensors, particularly from Nikon, Sony, and Canon, has significantly raised the bar in terms of image resolution and detail capture. With full-frame sensors now regularly reaching 45 to 61 megapixels – such as the Nikon Z9 (45.7 MP), Sony α1 (50.1 MP), and Canon EOS R5 (45 MP) – questions are being asked about whether existing still photography lenses can adequately resolve the fine detail these sensors are capable of capturing. In many cases, the answer depends on the lens design, manufacturing quality, and the specific application.
Optical performance is primarily measured by resolving power, typically expressed in line pairs per millimeter (lp/mm). High-resolution sensors require lenses that can resolve at least 80–100 lp/mm in the centre and maintain high performance toward the corners. While many modern prime lenses and professional zooms exceed this threshold – such as the Canon RF 85mm f/1.2L, Nikon Z 24-70mm f/2.8 S, and Sony G Master series – older DSLR-era lenses, especially wide-aperture zooms or budget glass, may not consistently resolve to the pixel level across the frame.
According to testing from independent labs like DXOMark and LensRentals, high-end mirrorless lenses designed for newer mounts (RF, Z, E) often outperform legacy DSLR lenses due to improvements in aspherical elements, coatings, and precision alignment. For example, the Sony FE 135mm f/1.8 GM exhibits resolving power beyond 60 lp/mm even on the Sony α1, ensuring that the sensor is not out-resolving the optics.
However, resolving power is not the only metric of importance. Lens contrast, microcontrast, and chromatic aberration control play major roles in perceived sharpness. Furthermore, while most top-tier primes match or exceed sensor capabilities in the centre, edge-to-edge performance is where many lenses – especially wide-angle designs – struggle to keep up with today’s pixel-dense sensors.
Medium Format Sensors
When considering ultra-high-resolution sensors like those found in Fujifilm and Hasselblad medium format cameras – both offering 100 megapixels (e.g., Fujifilm GFX 100 II and Hasselblad X2D 100C) – the demands on lens performance become even more stringent. These sensors, with resolutions exceeding 11,000 horizontal pixels, require exceptional optical precision to avoid bottlenecking the imaging system. In this context, lens design and quality are even more critical than in full-frame systems.
Fujifilm’s GF lens lineup is engineered specifically for the GFX system and its 100MP sensors. According to Fujifilm, the GF lenses are designed to resolve beyond 100 lp/mm, leveraging large image circles, low distortion elements, and complex aspherical surfaces. Field tests and lab results (e.g., by Imaging Resource and DPReview) confirm that top lenses like the GF 110mm f/2 and GF 80mm f/1.7 provide exceptional central sharpness and maintain high contrast well into the corners – crucial for landscape, commercial, and fine art applications.
Hasselblad’s XCD lenses, similarly, are optimized for 100MP capture with sensors measuring 43.8 × 32.9 mm. The XCD 80mm f/1.9, for example, is one of the sharpest lenses in their lineup, designed with ultra-precise tolerances and a focus on colour accuracy and minimal distortion. Hasselblad’s natural colour solution and lens calibration processes ensure consistency and detail retention across the entire frame.
Despite the capability of these lenses, limitations can still arise. Diffraction becomes a serious factor at smaller apertures (e.g., beyond f/11), where even the finest lenses will begin to soften detail. Moreover, field curvature, chromatic aberration, and micro-vibrations can degrade effective resolution if not managed carefully.
While Fujifilm and Hasselblad have developed lens systems that can match the extraordinary resolution of their 100MP sensors, these systems demand impeccable technique and attention to optical precision. Not all lenses within their respective systems are equal — users must pair high-resolution bodies with the sharpest lenses available and shoot with precision to extract the full potential of 100 megapixels.
Third Party Manufacturers
Third-party lens manufacturers such as Tamron, Sigma, Tokina, Laowa, and Samyang have made significant strides in recent years, with many of their modern lenses fully capable of matching – and in some cases exceeding – the resolution demands of today’s high-resolution sensors, including 45–61MP full-frame and even 100MP medium format systems. However, this capability varies across product lines and individual lenses.
Sigma’s Art series, in particular, has earned a reputation for high optical performance. Lenses like the Sigma 85mm f/1.4 DG DN Art and Sigma 35mm f/1.4 DG DN Art consistently test near the top in resolving power, edge-to-edge sharpness, and chromatic aberration control. On high-megapixel sensors like the Sony α1 or Nikon Z8 (via adapter), these lenses generally maintain resolving power upwards of 60–70 lp/mm, which is sufficient for matching the sensor’s capabilities.
Tamron has also raised its game, especially with its Di III line for mirrorless mounts. The Tamron 35-150mm f/2-2.8 and 28-75mm f/2.8 G2 are standout performers, offering excellent central sharpness and good control over optical aberrations. While perhaps not matching the ultimate microcontrast or corner performance of OEM flagship lenses, they offer tremendous value and are more than capable of supporting high-resolution bodies in most real-world applications.
For medium format, third-party options are more limited. Laowa, for example, makes specialized macro and wide-angle GF-mount lenses for the Fujifilm GFX system, but most lack autofocus and may not be optimized for consistent edge-to-edge performance at 100MP. Sigma and Tamron currently do not offer native medium format lenses, focusing instead on full-frame and APS-C formats.
The key consideration with third-party lenses is variation in quality control and mount-specific optimization. Older DSLR-era designs adapted to mirrorless cameras may not fully leverage modern sensor capabilities due to flange distance mismatches or lack of optimization for new coatings and sensor stacks. However, modern mirrorless-native designs from Sigma and Tamron often rival or even outperform first-party lenses in both sharpness and value.
Many modern third-party lenses are absolutely capable of resolving enough detail to match today’s high-resolution sensors, especially in full-frame systems. The best-performing examples from Sigma and Tamron, in particular, are no longer “budget alternatives,” but serious contenders in terms of optical quality. For the highest-resolution systems (e.g., 100MP medium format), third-party options remain more limited, but this may evolve as demand and competition grow.
Conclusion
In conclusion, while many modern still photography lenses are indeed capable of matching or even exceeding the resolution demands of the latest sensors, not all are created equal. Professionals working in landscapes, studio, or commercial settings should carefully select optics that have been optimized for high-resolution mirrorless systems. As sensor technology continues to push forward, so too must lens innovation – and fortunately, the industry appears to be keeping pace.
About the Author:
Michael Martin is the Vice President of Technology with Metercor Inc., a Smart Meter, IoT, and Smart City systems integrator based in Canada. He has more than 40 years of experience in systems design for applications that use broadband networks, optical fibre, wireless, and digital communications technologies. He is a business and technology consultant. He was a senior executive consultant for 15 years with IBM, where he worked in the GBS Global Center of Competency for Energy and Utilities and the GTS Global Center of Excellence for Energy and Utilities. He is a founding partner and President of MICAN Communications and before that was President of Comlink Systems Limited and Ensat Broadcast Services, Inc., both divisions of Cygnal Technologies Corporation (CYN: TSX).
Martin served on the Board of Directors for TeraGo Inc (TGO: TSX) and on the Board of Directors for Avante Logixx Inc. (XX: TSX.V). He has served as a Member, SCC ISO-IEC JTC 1/SC-41 – Internet of Things and related technologies, ISO – International Organization for Standardization, and as a member of the NIST SP 500-325 Fog Computing Conceptual Model, National Institute of Standards and Technology. He served on the Board of Governors of the University of Ontario Institute of Technology (UOIT) [now Ontario Tech University] and on the Board of Advisers of five different Colleges in Ontario – Centennial College, Humber College, George Brown College, Durham College, Ryerson Polytechnic University [now Toronto Metropolitan University]. For 16 years he served on the Board of the Society of Motion Picture and Television Engineers (SMPTE), Toronto Section.
He holds three master’s degrees, in business (MBA), communication (MA), and education (MEd). As well, he has three undergraduate diplomas and seven certifications in business, computer programming, internetworking, project management, media, photography, and communication technology. He has completed over 50 next generation MOOC (Massive Open Online Courses) continuous education in a wide variety of topics, including: Economics, Python Programming, Internet of Things, Cloud, Artificial Intelligence and Cognitive systems, Blockchain, Agile, Big Data, Design Thinking, Security, Indigenous Canada awareness, and more.