What is the crop factor of the Sony A5100?
The Sony Alpha A5100 is equipped with an APS-C sensor, whose diagonal measures 28.2mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 1.5.
The crop factor is defined as the ratio of the 35mm full-frame film diagonal to the diagonal of a digital sensor. This number indicates how a lens behaves in relation to the size of the image sensor.
Sensor size comparison with a film slide
With a crop factor of 1.5, the sensor in the Sony A5100 is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Sony A5100 will offer a narrower angle of view and provide deeper depth of field than a lens of similar focal length and aperture on a film camera. The equivalent focal length is obtained by multiplying the actual focal length of the lens with the crop factor. For example, a 33mm lens on the Sony A5100 will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (33mm * 1.5 = 50mm).
Sensor specs and performance
The table below compares the sensor specs of the Sony A5100 to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better), covering color depth (DXO Portrait), dynamic range (DXO Landscape), and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A5100 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.8 | 12.7 | 1347 | 80 | |
2. | Sony A3000 | APS-C | 19.8 | 5456 | 3632 | 1080/60i | 23.7 | 12.8 | 1068 | 78 | |
3. | Sony A5000 | APS-C | 19.8 | 5456 | 3632 | 1080/60i | 23.8 | 13.0 | 1089 | 79 | |
4. | Sony A6000 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.1 | 13.1 | 1347 | 82 | |
5. | Sony NEX-3 | APS-C | 14.0 | 4592 | 3056 | 720/30p | 22.1 | 12.0 | 830 | 68 | |
6. | Sony NEX-3N | APS-C | 16.0 | 4912 | 3264 | 1080/60i | 22.8 | 12.5 | 1067 | 74 | |
7. | Sony NEX-5T | APS-C | 16.0 | 4912 | 3264 | 1080/60p | 23.6 | 13.0 | 1015 | 78 | |
8. | Sony NEX-F3 | APS-C | 16.0 | 4912 | 3264 | 1080/60i | 22.7 | 12.3 | 1114 | 73 | |
9. | Sony RX100 | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 22.6 | 12.4 | 390 | 66 | |
10. | Sony RX100 II | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 22.5 | 12.4 | 483 | 67 | |
11. | Sony RX100 IV | 1-inch | 20.0 | 5472 | 3648 | 4K/30p | 22.8 | 12.6 | 591 | 70 |
In the United States, the A5100 was initially launched in August 2014 at a price of $549.
Camera to camera comparisons
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Camera Model | Sony A5100 | |
---|---|---|
Camera Type | Mirrorless system camera | |
Camera Lens | Sony E mount lenses | |
Launch Date | August 2014 | |
Launch Price | USD 549 | |
Sensor Specs | ||
Sensor Technology | CMOS | |
Sensor Format | APS-C Sensor | |
Sensor Size | 23.5 x 15.6 mm | |
Sensor Area | 367 mm2 | |
Sensor Diagonal | 28.2 mm | |
Crop Factor | 1.5x | |
Sensor Resolution | 24 Megapixels | |
Image Resolution | 6 000 x 4 000 pixels | |
Pixel Pitch | 3.91 μm | |
Pixel Density | 6.55 MP/cm2 | |
Moiré control | Anti-Alias filter | |
Movie Capability | 1080/60p Video | |
ISO Setting | 100 - 25 600 ISO | |
Image Processor | BIONZ X | |
DXO Sensor Quality (score) | 80 | |
DXO Color Depth (bits) | 23.8 | |
DXO Dynamic Range (EV) | 12.7 | |
DXO Low Light (ISO) | 1347 | |
Screen Specs | ||
Viewfinder Type | No viewfinder | |
Top-Level Screen | no Top Display | |
LCD Framing | Live View | |
LCD Size | 3.0 inch | |
LCD Resolution | 922k dots | |
LCD Attachment | Tilting screen | |
V-logging Friendliness | Front-flip possible | |
Touch Input | Touchscreen | |
Shooting Specs | ||
Focus System | On-Sensor Phase-detect | |
Manual Focusing Aid | Focus Peaking | |
Maximum Shutter Speed | 1/4000s | |
Continuous Shooting | 6 shutter flaps/s | |
Shutter Life Expectancy | 100 000 actuations | |
Silent Shooting | no E-Shutter | |
Time Lapse Photography | no Intervalometer | |
Fill Flash | Built-in Flash | |
Storage Medium | MS or SDXC cards | |
Single or Dual Card Slots | Single card slot | |
UHS card support | UHS-I | |
Connectivity Specs | ||
External Flash | no Hotshoe | |
USB Connector | USB 2.0 | |
HDMI Port | micro HDMI | |
Wifi Support | Wifi built-in | |
Near-Field Communication | NFC built-in | |
Body Specs | ||
Battery Type | Sony NP-FW50 power pack | |
Battery Life (CIPA) | 400 shots per charge | |
In-Camera Charging | USB charging | |
Body Dimensions |
110 x 63 x 36 mm (4.3 x 2.5 x 1.4 in) |
|
Camera Weight | 283 g (10.0 oz) |
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