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Olympus E-M10 IV vs Casio EX-ZS15 Comparison

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Olympus E-M10 IV

20 MP | Four Thirds (17.4 x 13 mm) CMOS Sensor

Olympus E-M10 IV
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Casio EX-ZS15

14 MP | 1/2.3" (6.17 x 4.55 mm) CCD Sensor

Casio EX-ZS15
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Olympus E-M10 IV vs Casio EX-ZS15 Comparison Overview

Here we are comparing two cameras with different body types: Olympus E-M10 IV, which was introduced in August 2020 is a Entry-Level Mirrorless camera with a 20.0MP Four Thirds sensor whereas Casio EX-ZS15, which was introduced in July 2011 is a Ultracompact camera with a 14.0MP 1/2.3-inch sensor. As you can see, EX-ZS15 is 9 years older than E-M10 IV. Let's see if this age difference between two cameras makes a big difference.

Comparing an interchangeble lens camera to a fixed lens camera is a bit tricky but we will do our best to make this a fair comparison.

Here is a brief look at the main features of Olympus E-M10 IV and Casio EX-ZS15 before getting into our more detailed comparison.

Olympus E-M10 IV Key Specs

  • Announcement Date: 2020-08-04
  • 20MP - Four Thirds CMOS Sensor
  • ISO 200 - 25600 ( expands to 100 - 25600)
  • Micro Four Thirds Mount
  • Sensor-shift Image Stabilization
  • 3.00" Tilting Screen
  • 2360k dot Electronic viewfinder
  • 8.7fps (15.0fps Electronic) continuous shooting
  • 4K (UHD) - 3840 x 2160 video resolution
  • Built-in Wireless
  • 383g. 122 x 84 x 49 mm
  • Replaced Olympus OM-D E-M10 Mark III Compare

Casio EX-ZS15 Key Specs

  • Announcement Date: 2011-07-18
  • 14MP - 1/2.3-inch CCD Sensor
  • ISO -
  • Mount
  • " Fixed Type Screen
  • fps continuous shooting
  • HD - 1280 x 720 video resolution
  • 154g. 103 x 59 x 20 mm

Let's read on the following sections in order to better understand in detail how Olympus E-M10 IV and Casio EX-ZS15 compares and hopefully end up with enough arguments to decide which one is better for you.


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Reasons to choose Olympus OM-D E-M10 IV over Casio Exilim EX-ZS15
Wireless Connection
Built-In vs None Better connectivity
Live Composite Mode
Yes vs No Excellent help for long-exposure photography
In-built Image Stabilization
Sensor-shift vs None Sharper images at longer focal lengths and slow shutter speeds
LCD Screen
Tilting vs Fixed Type Flexible shooting positions
Built-in Flash
Yes vs No Useful in low-light
External Flash Shoe
Yes vs No Better for flash photography
Touch Screen
Yes vs No Easy control of camera functions
Viewfinder
Electronic vs None Better framing and control
RAW Support
Yes vs No Better image quality
Face Detection Focus
Yes vs No very handy for portraits
Sensor Resolution
20 MP vs 14 MP 42% more pixels
Max ISO
25.600 vs 0 0% higher Max ISO
LCD Screen Size
3 vs 3 inches larger display
Manual Exposure
Yes vs No better exposure control
Timelapse Recording
Yes vs No creative shooting
Max Video Resolution
3840 x 2160 vs 1280 x 720 Higher Resolution Video
AE Bracketing
Yes vs No Useful for tough lighting conditions and HDR
Selfie & Vlogger LCD
Yes vs No Rotate LCD for taking Selfies
Bluetooth
Yes vs No Connect your camera to other devices via Blueetooth
Focus Bracketing
Yes vs No Take multiple photos shifting focus point
Smartphone Remote
Yes vs No Remote control your camera with a smartphone
UHS Card Support
UHS-II vs none Read/Write in High Speeds
CHECK E-M10 IV PRICE


Reasons to choose Casio Exilim EX-ZS15 over Olympus OM-D E-M10 IV
Weight
154 g vs 383 g 229 g lighter
CHECK EX-ZS15 PRICE

Common Strengths of Olympus OM-D E-M10 IV and Casio Exilim EX-ZS15
LCD Screen Resolution
1.040k dots vs 0k dots High resolution screens
Common Weaknesses of Olympus OM-D E-M10 IV and Casio Exilim EX-ZS15
LCD Screen Size
" vs " Small display
Environmental Sealing
No vs No not suitable for tough conditions
Olympus E-M10 IV vs Casio EX-ZS15: Physical Specs and Body features Comparison

Size and weight is a big decision factor when you are trying to find the ideal camera for your needs. In this section, We are going to illustrate Olympus E-M10 IV and Casio EX-ZS15 side-by-side from the front, back and top in their relative dimensions. Olympus E-M10 IV has external dimensions of 122 x 84 x 49 mm (4.8 x 3.31 x 1.93″) and weighs 383 g (0.84 lb / 13.51 oz) (including batteries). Casio EX-ZS15 has external dimensions of 103 x 59 x 20 mm (4.06 x 2.32 x 0.79″) and weighs 154 g (including batteries).

Below you can see the front view size comparison of Olympus E-M10 IV and Casio EX-ZS15. Casio EX-ZS15 is clearly the smaller of the two cameras. Its body is 19mm narrower, 25mm shorter and 29mm thinner than Olympus E-M10 IV. As you can tell, actually this is not a fair size comparison since Casio EX-ZS15 has a built-in lens but Olympus E-M10 IV doesn't. Once you put a lens on E-M10 IV, its thickness will increase significantly.

Olympus E-M10 IV vs Casio EX-ZS15 Camera Size Comparison - Front View
Comparison image of Olympus E-M10 IV and Casio EX-ZS15 Size, Weight and External Dimensions - Front View

Here is the back view size comparison of Olympus E-M10 IV and Casio EX-ZS15.

Olympus E-M10 IV vs Casio EX-ZS15 Camera Size Comparison - Back View
Comparison image of Olympus E-M10 IV and Casio EX-ZS15 Size and Weight - Back View

Now lets look at the top view comparison of Olympus E-M10 IV and Casio EX-ZS15.
Olympus E-M10 IV vs Casio EX-ZS15 Camera Size Comparison - Top View
Top View Comparison image of Olympus E-M10 IV and Casio EX-ZS15 Size

Weight is another important factor especially when deciding on a camera that you want to carry with you all day. Casio EX-ZS15 is significantly lighter (229g ) than the Olympus E-M10 IV which may become a big advantage especially on long walking trips.

Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on E-M10 IV, the total kit will weigh much higher.

Weather Sealing

Unfortunately neither Olympus OM-D E-M10 IV nor Casio Exilim EX-ZS15 provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections:
Top Mirrorless Cameras with Weather Sealing
Top Compact Cameras with Weather Sealing

LCD Screen Size and Features

Olympus E-M10 IV's 3.00" LCD screen is slightly larger than Casio EX-ZS15's screen.

In addition to the size advantage, Olympus E-M10 IV LCD screen also has a Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Casio EX-ZS15 has a fixed type screen which provides less flexibility in shooting positions compared to E-M10 IV.
Olympus E-M10 IV vs Casio EX-ZS15: Sensor Comparison

Olympus E-M10 IV has a 20.0MP Four Thirds (17.4 x 13 mm ) sized CMOS sensor and features TruePic VIII processor. On the other hand, Casio EX-ZS15 has a 14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .

Olympus E-M10 IV's sensor provides 6MP more than Casio EX-ZS15's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely. On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.

Below you can see the E-M10 IV and EX-ZS15 sensor size comparison.

Olympus E-M10 IV vs Casio EX-ZS15 Sensor Size Comparison
Sensor Size and Resolution Comparison image of Olympus E-M10 IV and Casio EX-ZS15 Cameras


As seen above, Olympus E-M10 IV has a 8.1x Larger sensor area than Casio EX-ZS15. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.

Olympus E-M10 IV vs Casio EX-ZS15: OUR DECISION

You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Olympus E-M10 IV and Casio EX-ZS15, below you can find their scores in five different aspects. Our Decision Algorithm dynamically scores cameras using 69 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.

Here is a summary of how Olympus E-M10 IV and Casio EX-ZS15 scores compare:

Olympus E-M10 IV
Imaging
Features
Value
Portability
Overall
Ranked #77 out of 109 in SLR-style mirrorless cameras
Ranked #139 out of 1257 in all Cameras
Casio EX-ZS15
This camera is not rated yet!

Olympus E-M10 IV
Olympus E-M10 IV
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Casio EX-ZS15
Casio EX-ZS15
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Casio EX-ZS15 vs Olympus E-M10 IV Specs Table
Detailed comparison of specifications
General Olympus OM-D E-M10 IV Casio Exilim EX-ZS15
Brand Olympus Casio
Announced 2020-08-04 2011-07-18
Body Type SLR-style mirrorless Ultracompact
Sensor
Type CMOS CCD
Size Four Thirds 1/2.3-inch
Dimensions 17.4 x 13 mm 6.17 x 4.55 mm
Area 226.20mm2 28.07mm2
Megapixels 20 megapixels 14 megapixels
Max Resolution 5184 x 3888 4320 x 3240
Max Native Light sensitivity 25,600 ISO 0 ISO
Max Boosted Light Sensitivity 25600 ISO -
Min Native Light sensitivity 200 ISO 0 ISO
Min Boosted Light Sensitivity 100 ISO -
RAW Support
Autofocus
AF Touch
AF Continuous
AF Single
AF Tracking
AF Selective
AF Center
AF Multi Area
AF Live View
AF Face Detection
AF Contrast Detection
AF Phase Detection
Number of Focus Points 121 n/a
Lens
Manual Focus
Lens Mount Micro Four Thirds fixed lens
Screen
Type Tilting Fixed type
Size 3.00" "
Resolution 1,040k dots 0k dots
Touch Screen
Viewfinder
Viewfinder Electronic None
Viewfinder Resolution 2,360k dots no electronic viewfinder
Viewfinder Coverage 100% n/a
Viewfinder Magnification 0.62x n/a
Photography Features
Max Mechanical Shutter 1/4000s n/a
Max Electronic Shutter 1/16000s n/a
Shutter Priority
Aperture Priority
Manual Exposure Mode
Custom White Balance
Built-in Image Stabilization Sensor-shift No
Built-in Flash
Flash Range 7.20 m (at ISO 200) no built-in flash
Max Flash Sync 1/250s s
External Flash
Continuous Shooting 8.7 fps n/a
Multi-Segment Metering
Average Metering
Spot Metering
Partial Metering
AF-Area Metering
Center Weighted Metering
AE Bracketing
WB Bracketing
Video Features
Max Video Resolution 3840 x 2160 1280 x 720
Video Formats MPEG-4, H.264 Motion JPEG
Microphone Port
Headphone Port
Connectivity
Wireless Connectivity Built-In None
HDMI
Physical
Environmental Sealing
Weight 383g 154g
Dimensions 122 x 84 x 49mm 103 x 59 x 20mm
Battery Life 360 shots n/a
Other Features
Timelapse Recording
GPS None None
DxO Sensor Scores
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