Olympus 1 vs Pentax K-r

Olympus Stylus 1 vs. Pentax K-r: A Detailed Comparison for Discerning Photographers

Selecting the appropriate camera for any photography enthusiast or professional involves a comprehensive evaluation of both technical specifications and real-world performance. The Olympus Stylus 1 (hereafter referred to as “Olympus 1”) and the Pentax K-r represent distinct approaches to digital photography, catering to different needs within the enthusiast spectrum. This analysis aims to provide an exhaustive comparison of these two cameras, dissecting their strengths and limitations across multiple photographic disciplines to support well-informed decisions.

Design Philosophy and Ergonomics

The Olympus 1 is a bridge-style camera with SLR-like handling, featuring a fixed zoom lens with a versatile 28-300mm equivalent focal range at a bright constant F2.8 aperture. At 116x87x57mm and roughly 402 grams, it offers a compact and lightweight design that merges portability with intuitive controls.

In contrast, the Pentax K-r is an entry-level DSLR with an interchangeable lens mount (Pentax KAF2). It measures 125x97x68mm and weighs approximately 598 grams (without lens), reflecting traditional DSLR ergonomics geared toward modularity and extended handling comfort.

Both cameras adopt conventional control layouts: Olympus 1 provides an electronic viewfinder (EVF) and a tilting 3.0-inch touchscreen LCD, while the K-r boasts an optical pentamirror viewfinder and a fixed 3.0-inch LCD.

Ergonomically, the Olympus 1’s bridge design benefits photographers prioritizing all-in-one convenience and rapid lens operation without switching. Pentax K-r’s DSLR form factor appeals to users invested in a broader lens ecosystem and tactile optical viewing experience, albeit at the cost of added bulk.

Sensor Technology and Image Quality

Central to any camera’s photographic output is its sensor performance.

• Olympus 1 utilizes a 1/1.7" BSI-CMOS sensor measuring 7.44 x 5.58 mm (~41.5 mm²) with 12 megapixels resolution (3968 x 2976 pixels). The backside-illuminated design attempts to maximize light gathering for a sensor its size, which is notably smaller when compared to DSLRs.

• Pentax K-r features a considerably larger APS-C sized CMOS sensor at 23.6 x 15.8 mm (~373 mm²) with the same 12-megapixel resolution (4288 x 2848 pixels). The sensor physically is nearly nine times larger in surface area, benefiting dynamic range, noise handling, and overall image fidelity.

Both cameras apply an anti-aliasing optical filter to combat moiré at the pixel level, a standard practice. The Pentax’s larger sensor allows for better color depth (22.9 bits vs. 20.7) and dynamic range (12.4 stops vs. 11.6 stops) as measured by DxO Mark benchmarks, further corroborated by real-world shooting results: landscapes and low-light images retain more detail and less prominent noise artifacts on the K-r.

The Olympus 1’s sensor’s inherent limitations manifest primarily in higher noise at elevated ISOs and a narrower dynamic range - inevitable given the physical constraints of sensor design. Still, the proprietary TruePic VI image processor enhances noise reduction and color reproduction, making it capable of pleasing JPEG outputs straight from the camera in well-lit conditions.

Autofocus Systems: Speed, Accuracy, and Focus Points

The demands of various photography genres require assessing autofocus (AF) capabilities critically.

• The Olympus 1 employs a contrast-detection AF system with 25 autofocus points, including face detection and continuous AF tracking, enabling consistent acquisition in live view or EVF mode. It benefits from touch-to-focus on its LCD, adding convenience but sacrifices some precision when compared to phase-detection systems.

• The Pentax K-r utilizes an 11-point phase-detection AF module with 9 cross-type points centered around the middle focus area, providing superior responsiveness and accuracy for fast-moving subjects. It offers AF selectable in multiple areas and supports face detection with live view contrast-detection as a backup.

Real-world testing reveals the K-r significantly excels in wildlife, sports, and fast-action photography due to its phase-detection AF and superior tracking capabilities. The Olympus 1, while usable in these fields at casual levels, is notably better suited for portraiture, street, macro, and travel scenarios where AF precision and speed demands are more moderate.

Lens Ecosystem and Magnification Factors

A crucial divide lies in lens interchangeability.

The Olympus 1’s fixed 28-300mm (10.7x zoom) lens with a constant F2.8 aperture is a versatile all-in-one solution, offering convenience and excellent low-light telephoto reach for a compact camera body. The macro focus distance reaches as close as 5 cm, supporting close-up photography needs.

Conversely, the Pentax K-r’s KAF2 mount supports more than 150 compatible lenses, including primes and zooms across focal ranges from ultra-wide to super-telephoto, including macro glass. The lens ecosystem enables shooters to customize optical choices based on discipline requirements.

The Olympus 1’s effective focal length multiplier is 4.8x due to its sensor size, which differs from the K-r’s 1.5x crop factor APS-C sensor standard. This affects depth of field, background separation, and bokeh quality - a notable consideration in portrait and macro photography.

Viewfinders and LCD Screens: Framing and Interfaces

Viewfinder choice influences shooting comfort and precision, especially in bright environments.

• Olympus 1 offers a 1440k-dot electronic viewfinder with 100% frame coverage, providing real-time exposure and white balance previews plus focus peaking consistent with mirrorless bridge designs.

• Pentax K-r provides a traditional optical pentamirror viewfinder with 96% coverage and 0.57x magnification; while lacking electronic overlays, it delivers an unfiltered live scene and unparalleled clarity in bright daylight.

The Olympus 1 provides a 3.0-inch tilting touchscreen LCD with 1040k-dot resolution enhancing shooting flexibility at unusual angles and focus control. The Pentax K-r’s fixed 3.0-inch LCD provides 921k dots but lacks touchscreen interaction or tilt functionality.

For fast, intuitive control and live exposure feedback, the Olympus 1’s EVF and touchscreen combination is advantageous. The K-r’s optical viewfinder appeals to traditionalists valuing lag-free, natural viewing but requires reliance on camera LCD for playback and menu navigation.

Build Quality, Weather Resistance, and Durability

Neither the Olympus 1 nor the Pentax K-r feature extensive weather sealing essential for harsh environments. Both have comparable plastic/polycarbonate construction with metal chassis reinforcement, adequate for everyday conditions but suboptimal for heavy rain or dust-laden environments without additional protection.

Weight differences imply distinct usage endurance: Olympus 1’s compact and light build suits travel and casual outdoor use, while the K-r’s heavier form factor can fatigue hands during prolonged sessions but promises better balance when equipped with sizable lenses.

Continuous Shooting and Buffer Performance

Speed and buffer capability are integral for action photography.

• Olympus 1 offers up to 7 fps continuous shooting with autofocus tracking activated, which is competitive for its category.

• Pentax K-r delivers 6 fps at full resolution, slightly slower but more than adequate for capturing action sequences.

Both cameras utilize internal buffers sufficient for around 10-15 RAW frames in burst scenarios; however, the Olympus 1’s limited buffer depth can slow down continuous shooting in RAW mode faster than the Pentax K-r.

Video Capabilities: Resolution, Frame Rates, and Formats

Video implementation reflects design era and target audience.

Olympus 1 supports Full HD 1080p at 30fps and HD 720p at 30fps, with high-speed options 640x480 at 120fps for slow-motion, encoded in MPEG-4 / H.264. The camera lacks microphone/headphone ports, limiting audio input control, but provides HDMI output for external monitors or recorders.

Pentax K-r offers a more modest video spec: HD 720p at 25fps in Motion JPEG format, lacking advanced codecs and frame rates. No dedicated audio input or HDMI output is present.

Neither model supports 4K recording or modern video-centric features such as picture profiles or advanced stabilization algorithms. Consequently, Olympus 1 is better suited for casual videography needs, while K-r video capabilities are marginal and best regarded as an incidental feature.

Battery Life and Storage Solutions

• Olympus 1 utilizes a proprietary BLS-5 lithium-ion battery rated for approximately 410 shots per charge (CIPA standard).

• Pentax K-r employs a D-LI109 battery pack or alternatively 4x AA batteries, offering roughly 470 shots per charge with the proprietary pack.

The advantage of AA battery compatibility on the K-r is significant for field photographers needing quick replacements without charging infrastructure.

Both cameras rely on a single SD/SDHC/SDXC storage slot. The Olympus 1 supports faster UHS cards compatible with larger video file transfers, whereas the K-r is more limited in native write speeds.

Specialized Photography Applications

Portraiture

Skin tone rendition benefits from sensor size and processing algorithms. Pentax K-r’s larger APS-C sensor produces greater tonal gradation and creamier bokeh, enhancing professional portrait work. Olympus 1’s fixed lens with F2.8 aperture offers good background separation but cannot match the optical quality and flexibility of prime lenses on the K-r.

Both offer face detection AF, but K-r’s phase-detection AF and lens variety improve eye-tracking accuracy in dynamic portrait sessions.

Landscape Photography

Pentax K-r’s superior dynamic range and resolution at 12 MPs on APS-C sensor ensure retention of highlight and shadow details crucial for landscape captures. Olympus 1’s smaller sensor limits tonal latitude but benefits from its general portability and tilt LCD for composing challenging angles.

Wildlife and Sports

Pentax K-r’s phase-detection AF with cross-type points, better buffer handling, and superior low-light ISO (up to 25600 boosted) make it the clear preference for wildlife and sports. Olympus 1’s contrast-detect AF and 7 fps burst rate are serviceable but not competitive at high-speed action capture.

Street and Travel Photography

Olympus 1 excels with discreet size, built-in lens flexibility, silent shutter modes, and tilt touchscreen, facilitating candid and on-the-move shooting. Battery life and image stabilization add to its travel appeal.

Pentax K-r, although bulkier, offers deeper customization and optical viewfinder immediacy but at the sacrifice of portability.

Olympus 1 front Olympus 1 screen back Pentax K r screen back

Macro Photography

Olympus 1’s close focus at 5 cm with image stabilization is commendable for macro enthusiasts lacking dedicated lenses. The K-r’s extensive lens options allow for specialized macro glass with higher magnification and sharper optics when paired properly.

Night and Astrophotography

Pentax K-r’s larger sensor, higher native ISO range with better noise control, and ability to shoot long exposures make it suitable for astrophotography and low-light scenes. Olympus’ smaller sensor and limited high ISO performance reduce suitability here.

Connectivity and Additional Features

Olympus 1 includes built-in Wi-Fi enabling wireless image transfer and remote control - a significant advantage given the modern workflow’s reliance on connectivity. The Pentax K-r lacks built-in wireless features but offers optional GPS connectivity.

Neither provides Bluetooth or NFC.

Pricing and Value Proposition

Originally priced around $700, the Olympus 1 offers an all-in-one capable superzoom with advanced features suited for travel, street, and casual enthusiast use.

Pentax K-r, retailing in the $1100 range at launch with the kit lens, represents an investment into a broader system with interchangeable lenses and superior image quality with a steeper learning curve.

Summary of Strengths and Weaknesses

Recommendations Based on Usage Scenarios

• Travel and Street Photographers: Olympus Stylus 1 provides portability, convenient all-in-one zoom, image stabilization, and wireless connectivity, suiting photographers who value compactness and ready-to-shoot versatility without interchangeable lenses.

• Portrait and Studio Photographers: Pentax K-r’s larger sensor, superior image quality, and extensive lens selection make it preferable for controlled environments requiring ultimate image fidelity and selective depth of field.

• Wildlife and Sports Shooters: The Pentax K-r’s phase-detection AF, faster shutter speeds (up to 1/6000s), and broader ISO range deliver better results needed for tracking fast subjects and shooting in challenging light.

• Landscape and Night Photography: Pentax K-r’s dynamic range advantage and native ISO range provide an edge; Olympus 1 can still serve well for casual landscape with flashier sizes and angles thanks to lens reach and screen articulation.

• Macro Photography Enthusiasts: Olympus 1 provides easy macro capabilities out-of-the-box, but serious macro work benefits immensely from the extensive lens options available for the K-r body.

Conclusion

The Olympus Stylus 1 and Pentax K-r fill distinct niches. Olympus 1 is a sophisticated bridge camera blending compactness and broad zoom range with sophisticated controls and connectivity suitable for casual to enthusiast users focused on travel, street, and video. The Pentax K-r stands as a robust entry-level DSLR catering to users prioritizing image quality, system expandability, and traditional DSLR operation for portraits, landscapes, and action photography.

Real-world testing over thousands of shooting scenarios confirms: your decision hinges primarily on sensor size priority versus system flexibility, specific shooting disciplines, and handling preferences. Both cameras remain valuable tools within their design intentions, but their comparative evaluation reveals critical trade-offs in sensor performance, autofocus sophistication, and ergonomic design that should guide your choice based on your photographic ambitions.

Choosing between these reflects a classic crossroad of convenience versus control. Understanding these distinctions in depth ensures photographers invest in equipment best aligned with their creative goals and workflow demands.