I have been shooting with Micro Four Thirds cameras and lenses for so many years, and I am happy to have enjoyed the superior lens designs available, especially all the Olympus M.Zuiko lenses; if you’ve ever used any of those fantastic tiny little lenses, you’ll know what I mean. The lenses were all super sharp, performing incredibly well even at wide open apertures, and all technical flaws were very well controlled. Yet these lenses come in compact and light weight forms. It was truly a joy to shoot with small yet very optimized lenses.

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Both companies advertised these changes aggressively, highlighting that having a larger lens mount opening and shorter flange focal distance can dramatically improve optical design and resulting image output.

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I was actually happy to see that the giants are doing their best to improve lens design. Both Canon and Nikon, the big boys in the industry, adopting a similar approach validated the fact that the Micro Four Thirds alliance knew what they were doing… at least when it comes to the lens design approach. We know that we cannot just look at the camera from what the camera can do alone—lens optimization and design play an important role as we look at the system as a whole.

The researchers showcase an exciting surface metallic Dirac-vortex cavity design with enhanced power capabilities for electrically pumped Topological Lasers in the THz spectral range.

Jul 1, 2024 — For further information regarding these calculations, please refer to the readme file (PDF - 420 kB). Please contact the FRIB Manager for ...

Multifunctional active mid-infrared ring resonators and directional couplers with quantum cascade laser cores allow electrical control of resonant frequency and quality factors, tunable filtering and frequency comb generation.

Both Nikon and Canon took the advantage of the opportunity to introduce new mount. Nikon made 2 changes: They (1) increased the lens mount throat diameter opening from 47mm to 55mm, and (2) reduced the flange back focal distance from 46.5mm to 16mm. Similarly, Canon, maintaining their already large lens mount opening of 54mm (just 1mm shy of Nikon’s new Z-Mount opening), and decreased their flange back focal distance from 44mm to 20mm.

Topological phenomena in photonics have been found of great importance in realizing advanced semiconductor laser. Here the authors demonstrate the manipulation of the light emission profiles from a Kekulé-modulated topological bulk cavity in a topological-protection manner, where the achieved lateral beam shifts in light polarizations could be useful for the laser design and photonic sensing applications.

It makes perfect sense, because having larger glass element to fully envelope the image sensor area allows light to hit the sensor more perpendicularly, and bringing the rear end glass element from the lens closer to the image sensor minimizes light strays and bending. The obvious benefits in terms of technical image quality? Minimized aberrations (chromatic, spherical, etc), improved corner/edge sharpness, and better per-pixel optimized light capture overall.

ISO 10934 gives the following definitions of the depth of focus: Depth of focus is the axial depth of the space on both sides of the image within which the ...

The direct generation of femtosecond pulses from an 8-μm quantum cascade laser could prove transformative for sensing and spectroscopy.

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Yes, Olympus and Panasonic, the companies that started the Four Thirds DSLR system. Olympus released the Olympus E-1 DSLR in 2003 alongside their first fully-realized telecentric design lens, Zuiko Digital 14-54mm f/2.8-3.5. These technical concerns and approach to optimize lens mount and subsequent optical design were fully implemented by Olympus and Panasonic’s Four Thirds system 16 years ago. 16!

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Frankly, I was very happy to hear the full-frame mirrorless announcements from both Canon and Nikon in 2018. They only solidified my belief that mirrorless is the future. I was only a little frustrated that Nikon and Canon did not take the plunge earlier, allowing Sony a full 6 years head start as the sole manufacturer of full-frame mirrorless cameras. Late is better than never, I guess, so it is interesting to see what these big boys are doing with their new full-frame mirrorless system, being so late entering the game.

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The journey to realize a terahertz quantum cascade laser that operates at room temperature has taken a jump forward with news of a device that operates at –23 °C, within the reach of Peltier coolers.

Taking a closer look to the mount design, both companies adopt very similar approach, and I can’t help but notice the similarities and be reminded of what Four Thirds promised and delivered in 2003 when Olympus DSLR E-1 was launched: a more optimized telecentric lens design.

In 2008, Panasonic introduced the world’s first Micro Four Thirds system camera: the Panasonic Lumix G1. Then in 2009, Olympus released their Micro Four Thirds camera: the Olympus PEN E-P1. Both G1 and E-P1 used the brand new Micro Four Thirds mount, a mount created as both Panasonic and Olympus took the bold move, the first in the world, to enter the mirrorless game.

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Important disclaimer before diving too deep: the intention of the above video and this blog entry is not to make comparisons between different camera systems and lens designs. That has never been the objective of this site, and I see no benefit in doing so. I gain nothing from praising one system over another, thus this article is made strictly out of my observations about how imaging products have evolved over time.

A wavelength-size laser cavity with a movable end mirror enables single-mode operation and 25% fractional tuning of a terahertz quantum cascade laser.

Thorlabs designs and manufactures high-quality mechanics for just about any application. Standard components such as posts, rails, translation stages, and ...

Oct 16, 2024 — No lab kit required. The lab components of both courses are based on video analysis. The student is required to provide a digital camera (e.g. a ...

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As a result, camera manufacturers use the 0.01 inch standard when providing lens depth of field markers (shown below for f/22 on a 50mm lens). In reality, a ...

Quantum cascade lasers are bright and compact semiconductor lasers that emit light in the mid- to far-infrared spectral region. The use of a closed ring cavity has now set them on the path towards ultrafast pulses.

A high-brightness electrically pumped terahertz quantum cascade surface emitting laser empowered by a phase-engineered photonic crystal cavity.

Now, Canon and Nikon mirrorless shooters should be able to experience the same performance out of the latest Z-Mount and RF-Mount lenses.

I believe there are no bad cameras these days. Furthermore, it is crucial for us photographers to understand our gear better to allow us to make full use of the strengths while working around its weaknesses to accomplish our photography goals.

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About the author: Robin Wong is a Malaysia-based photographer, blogger and content creator. You can find more of his work and words on his website, or by following him on Facebook, Instagram and YouTube. This article was also published here, and is being republished with permission.

This actually refers to telecentric lens design, meaning optics that are designed in such a way that the light rays will hit the sensor more directly without too much straying off—a design that was already adopted by Four Thirds system lens mount in 2003!

Quantum cascade lasers are made up of many thin layers of semiconductor. An injected electron makes a small energy transition as it moves from one layer to the next, emitting light on each cascade. Because the energy steps are small, quantum cascade lasers can produce long-wavelength mid-infrared or terahertz radiation.

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They made one significant change in the mount design for Micro Four Thirds, making the move from DSLR to mirrorless cameras. Since there was no longer a mirror box or pentaprism mechanism in the camera, they were able to move the lens much closer to the image sensor. The flange focal distance was reduced from 38.67mm to 19.25mm. Micro Four Thirds did this in 2008, about a decade ago. The full Micro Four Thirds system, with many subsequent lenses released, all inherit the original DNA from the Four Thirds system, using optimized telecntric lens designs that both companies had been improving over the decade.

Free-running stable optical dissipative solitons, called Nozaki–Bekki solitons, are created in a ring semiconductor laser; their spontaneous formation with tuning of laser bias eliminates the need for an external optical pump.

I was excited when Canon and Nikon finally stepped into the mirrorless game seriously more seriously, releasing their full-frame mirrorless cameras in 2018. Nikon launched their Z6 and Z7 with the new Z-Mount, while Canon released the EOS-R with a new RF-Mount.

Exploring the realm of ultraviolet light, 365nm UV light emerges as a remarkable tool, versatile in its application and efficacy. At the forefront of this ...