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Fujifilm X-T5 vs Pentax K-3 Mark III Comparison

Storage & Battery

Fujifilm X-T5

Fujifilm X-T5 product photo

Pentax K-3 Mark III

Pentax K-3 Mark III
Fujifilm X-T5
Pentax K-3 Mark III
K-3 Mark III
Refers to the year this camera was officially made available for sale.
Announcement Date
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
February 11, 2022
March 30, 2021
Camera Type
Camera Size
Camera Weight

The Pentax K-3 Mark III takes the lead with a score of 83/100, just 2 points ahead of the Fujifilm X-T5 at 81/100. Both cameras share similarities, such as being released in 2021 and 2022, respectively. They also differ in their camera types, with the X-T5 being a mirrorless camera and the K-3 Mark III being a DSLR.

The Fujifilm X-T5 has some advantages, including a lower launch price of $1699 and a lighter weight of 557g. This makes it more budget-friendly and portable than the Pentax K-3 Mark III. On the other hand, the Pentax K-3 Mark III offers a higher overall score, which reflects its better performance and features. It is also a bit larger, measuring 135 x 104 x 74mm, and heavier at 820g.

When comparing these two cameras, the Fujifilm X-T5 is a more affordable and lightweight option, while the Pentax K-3 Mark III has a slightly higher score, indicating a better overall camera. Ultimately, the choice between these cameras depends on individual preferences and needs.

Fujifilm X-T5 vs Pentax K-3 Mark III Overview and Optics

The Pentax K-3 Mark III edges out the Fujifilm X-T5 in our optics comparison with a score of 82/100, a narrow one-point lead over the X-T5’s 81/100. Both cameras share several key features, including a CMOS sensor, APS-C sensor size, and image stabilisation. Additionally, they both utilize proprietary lens mounts – the Fujifilm X for the X-T5 and the Pentax KAF2 for the K-3 Mark III.

The Pentax K-3 Mark III has a DXOMARK sensor score of 96, showcasing its strong image quality. Although the Fujifilm X-T5 does not have a DXOMARK score, its 40-megapixel resolution surpasses the K-3 Mark III’s 26 megapixels, resulting in higher image detail. The X-T5 also has a faster shooting speed of 15 frames per second, compared to the K-3 Mark III’s 12 frames per second, making it more suitable for capturing fast-moving subjects.

In terms of processing power, the Fujifilm X-T5 is equipped with the X-Processor 5, while the Pentax K-3 Mark III uses the Prime IV processor. The X-Processor 5 may yield faster performance and better noise reduction, giving the X-T5 an advantage in low-light situations.

On the other hand, the Pentax K-3 Mark III’s DXOMARK score of 96 highlights its excellent sensor quality, which contributes to its overall image quality. This may compensate for its lower resolution and shooting speed when compared to the X-T5.

Taking these factors into account, the Pentax K-3 Mark III’s superior sensor quality and performance justify its higher optics score. However, the Fujifilm X-T5’s higher resolution and faster shooting speed make it a strong contender in its own right. Ultimately, the choice between these two cameras will depend on individual preferences and specific shooting requirements.

The higher the number of megapixels, the more detail the cameras sensor can capture.
40 MP
26 MP
Image Resolution
Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution.
7728 x 5152 px
6192 x 4128 px
Sensor Type
The camera sensor captures light and records the image. Sensors vary in physical size, the number of pixels, and quality.
Sensor Size
The sensor size contributes to the overall quality as well as the dynamic and tonal range a camera can capture. As a rule of thumb, the more surface there is to read the light, the more information it will capture.
15.6 x 23.5 mm
23 x 15.5 mm
Sensor Format
Refers to the most commonly used sensor sizes.
Frame Rate
The number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode.
15 fps
12 fps
Lens Mount
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Fujifilm X
Pentax KAF2
Image Processor
The image processor in the camera converts the information collected on the sensor for digital storage on the memory card.
X-Processor 5
Prime IV
Aspect Ratio
The aspect ratio refers to the proportional difference between width and height. The most popular aspect ratios are 3:2 and 4:3.
Minimum ISO (Native)
Refers to the lowest native (or 'base') ISO setting. Lower ISO are less sensitive to light but make a cleaner image.
Maximum ISO (Native)
Refers to the highest native (or 'base') ISO setting. Higher ISO is necessary for low-light situations or night photography, but higher ISOs often introduce grain or noise.
Minimum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Maximum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Minimum Shutter Speed
The minimum shutter speed will tell you the longest exposure your camera can take without using an external accessory.
15 s
30 s
Maximum Shutter Speed
The maximum shutter speed tells you the length inside 1 second the camera will capture. These can sometimes be extended with accessories such as extra external batteries.
1/ 8000 s
1/ 8000 s
Autofocus Points
Autofocus points show where the camera is focusing graphically as squares or brackets in Live View or on an electronic viewfinder. These points are also used for light meter readings.
In-body Stabilization
In-body Stabilization means the camera has a certain technology embedded that counteracts camera shake.
Viewfinder Type
The viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens.
Optical (pentaprism)
Viewfinder Resolution
3,690,000 dots

Fujifilm X-T5 vs Pentax K-3 Mark III Video Performance

The Fujifilm X-T5 outperforms the Pentax K-3 Mark III in video capabilities, scoring 87/100 compared to the latter’s 83/100. Both cameras share some common specifications, such as a maximum video frame rate of 60fps and built-in time-lapse functionality.

The Fujifilm X-T5 excels in offering a maximum video resolution of 6K and dimensions of 6240×4160, which is significantly higher than the Pentax K-3 Mark III’s 4K resolution and 3840×2160 dimensions. This difference allows the X-T5 to capture more detailed and sharper videos, making it a superior choice for videographers and content creators who require high-quality footage.

While the Pentax K-3 Mark III lags behind in video resolution, it still delivers commendable performance with its 4K capability. This resolution is suitable for most casual users and enthusiasts who do not demand the highest level of detail in their videos. The K-3 Mark III’s performance remains respectable and adequate for a range of video applications.

Comparing the video capabilities of both cameras, the Fujifilm X-T5 stands out as the better option for those seeking top-quality video performance, thanks to its 6K resolution. On the other hand, the Pentax K-3 Mark III provides a satisfactory video experience with its 4K resolution, catering to users with less demanding video requirements. Ultimately, the choice between these two cameras hinges on the individual’s specific needs and preferences in terms of video quality.

Indicates if this camera is capable of recording video.
Max Video Resolution
The best resolution this camera can capture video in. Modern cameras can capture up to 8K video.
Max Video Dimensions
Video resolution measured by the greatest number of pixels possible in each frame, width by height. A higher resolution means more detail or clarity in your video.
6240x4160 px
3840 x 2160 px
Max Video Frame Rate
How many frames per second your video will capture. Most cameras have options for multiple frame rates, depending on the resolution you shoot in. For a general video, 24p or 30p is the standard, but more serious filmmakers may need a higher frame rate for creative effect.
60 p
60 p
Time-Lapse Built In
A built in time-lapse mode will allow continuous shooting throughout a prolonged period of time to be compressed into a sped up video.
Video File Format
Different cameras can record in various video file formats. The File format you record in can impact how you edit and use the files.

Fujifilm X-T5 vs Pentax K-3 Mark III Features and Benefits

The Pentax K-3 Mark III wins the features comparison with a score of 87/100, while the Fujifilm X-T5 trails slightly behind with a score of 85/100. Both cameras share several specifications, such as a touchscreen, Wi-Fi, and Bluetooth capabilities. Neither camera has GPS functionality.

The winning camera, the Pentax K-3 Mark III, boasts a larger screen size of 3.2 inches compared to the Fujifilm X-T5’s 3-inch screen. However, it has a lower screen resolution of 1,620,000 dots, whereas the X-T5 has a higher resolution of 1,840,000 dots. Despite the lower resolution, the K-3 Mark III’s larger screen size provides a better viewing experience for photographers.

On the other hand, the Fujifilm X-T5 has a flip screen, which the Pentax K-3 Mark III lacks. This feature allows for more versatility in shooting angles and is especially useful for vlogging and capturing selfies. The flip screen is an advantage for the X-T5, even though it has a slightly lower overall feature score.

In conclusion, the Pentax K-3 Mark III is the winner in terms of features, with a larger screen size and a higher score. However, the Fujifilm X-T5’s flip screen and higher screen resolution make it a strong contender. Both cameras have their strengths, and the choice between them ultimately depends on the individual photographer’s preferences and needs.

Built-in Flash
A built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it.
External Flash
External flashes are often connected through a hot shoe at the top of a camera, or a cable at the side of the camera.
GPS features in a camera will include location metadata to each of your photographs.
Weather Sealing
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Screen Type
Touch Screen
Touchscreen allows you to change camera settings and access menus with a swipe of your finger, instead of using buttons.
Screen Size
Screen Resolution
Screen dots indicate the resolution of the LCD screen by including each sub pixel.
1,840,000 dots
1,620,000 dots
Flip Screen
A flip screen (or articulating screen) is a second screen which can flip out from the side or top of the camera. This rotating screen allows you more freedom to take photos at different angles.
Live View
Live View feature allows you to see a continuous live video of what is being seen through your lens.
Bluetooth capabilities allow you wireless control of your camera with other external devices.

Fujifilm X-T5 vs Pentax K-3 Mark III Storage and Battery

The Pentax K-3 Mark III wins in the storage and battery category with a score of 81/100, while the Fujifilm X-T5 scores 76/100. Both cameras have two memory card slots and accept SD/SDHC/SDXC cards. Additionally, they both offer USB charging capabilities.

The K-3 Mark III outperforms the X-T5 in battery life, providing 800 shots compared to the X-T5’s 580 shots. This extended battery life is due to the Pentax’s D-LI90 battery type. Furthermore, one of its memory card slots is UHS-II compatible, enabling faster data transfer speeds.

The Fujifilm X-T5, although having a lower battery life, uses the NP-W235 battery type. However, its memory card slots only support UHS-I compatibility, which results in slower transfer speeds compared to the K-3 Mark III.

Considering these factors, the Pentax K-3 Mark III is the better choice for photographers who prioritize longer battery life and faster memory card performance. The Fujifilm X-T5 is still a solid choice but falls short in comparison to the K-3 Mark III in the storage and battery department.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC (UHS-I compatible)
SD / SDHC / SDXC (1 slot is UHS-II compatible)
Dual Memory Card Slots
Battery Type
Battery Life
Approximately how long this cameras battery will last measured by how many photographs you will be able to take.
580 shots
800 shots
USB Charging
Sensor scores tested by DXOMARK

Alternatives to the Fujifilm X-T5 and Pentax K-3 Mark III

Fujifilm X-T5 vs Pentax K-3 Mark III Comparison image.

Are you still undecided about which camera is right for you? Have a look at these popular comparisons that feature the Fujifilm X-T5 or the Pentax K-3 Mark III:

User Scores
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