JVC GC-QX5HD vs. Panasonic Lumix DMC-TZ57
Comparison
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| JVC GC-QX5HD | Panasonic Lumix DMC-TZ57 | ||||
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Megapixels
3.34
16.00
Max. image resolution
2032 x 1536
4608 x 3456
Sensor
Sensor type
CCD
CMOS
Sensor size
1/1.8" (~ 7.11 x 5.33 mm)
1/2.33" (~ 6.08 x 4.56 mm)
Sensor size comparison
Sensor size is generally a good indicator of the quality of the camera.
Sensors can vary greatly in size. As a general rule, the bigger the
sensor, the better the image quality.
Bigger sensors are more effective because they have more surface area to capture light. An important factor when comparing digital cameras is also camera generation. Generally, newer sensors will outperform the older.
Learn more about sensor sizes »
Bigger sensors are more effective because they have more surface area to capture light. An important factor when comparing digital cameras is also camera generation. Generally, newer sensors will outperform the older.
Learn more about sensor sizes »
Actual sensor size
Note: Actual size is set to screen → change »
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| 1.37 | : | 1 |
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| JVC GC-QX5HD | Panasonic Lumix DMC-TZ57 | |
Surface area:
| 37.90 mm² | vs | 27.72 mm² |
Difference: 10.18 mm² (37%)
GC-QX5HD sensor is approx. 1.37x bigger than TZ57 sensor.
Note: You are comparing sensors of vastly different generations.
There is a gap of 14 years between JVC GC-QX5HD (2001) and
Panasonic TZ57 (2015).
Fourteen years is a huge amount of time,
technology wise, resulting in newer sensor being much more
efficient than the older one.
Pixel pitch tells you the distance from the center of one pixel (photosite) to the center of the next. It tells you how close the pixels are to each other.
The bigger the pixel pitch, the further apart they are and the bigger each pixel is. Bigger pixels tend to have better signal to noise ratio and greater dynamic range.
The bigger the pixel pitch, the further apart they are and the bigger each pixel is. Bigger pixels tend to have better signal to noise ratio and greater dynamic range.
Pixel or photosite area affects how much light per pixel can be gathered.
The larger it is the more light can be collected by a single pixel.
Larger pixels have the potential to collect more photons, resulting in greater dynamic range, while smaller pixels provide higher resolutions (more detail) for a given sensor size.
Larger pixels have the potential to collect more photons, resulting in greater dynamic range, while smaller pixels provide higher resolutions (more detail) for a given sensor size.
Relative pixel sizes:
vs
Pixel area difference: 9.62 µm² (553%)
A pixel on JVC GC-QX5HD sensor is approx. 553% bigger than a pixel on Panasonic TZ57.
Pixel density tells you how many million pixels fit or would fit in one
square cm of the sensor.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
Higher pixel density means smaller pixels and lower pixel density means larger pixels.
To learn about the accuracy of these numbers,
click here.
Specs
JVC GC-QX5HD
Panasonic TZ57
Total megapixels
17.50
Effective megapixels
16.00
Optical zoom
Yes
20x
Digital zoom
Yes
Yes
ISO sensitivity
80, 160, 320
Auto, 100, 200, 400, 800, 1600, 3200 (High Sensitivity Mode 1600 - 6400)
RAW
Manual focus
Normal focus range
50 cm
50 cm
Macro focus range
2 cm
3 cm
Focal length (35mm equiv.)
37 - 86 mm
24 - 480 mm
Aperture priority
Yes
Yes
Max. aperture
f2.8 - f3.8
f3.3 - f6.4
Metering
Matrix, Spot
Multi, Center-weighted, Spot
Exposure compensation
±2 EV (in 1/2 EV steps)
±2 EV (in 1/3 EV steps)
Shutter priority
Yes
Yes
Min. shutter speed
1/4 sec
4 sec
Max. shutter speed
1/750 sec
1/2000 sec
Built-in flash
External flash
Viewfinder
Optical
None
White balance presets
4
Screen size
2"
3"
Screen resolution
200,000 dots
1,040,000 dots
Video capture
Max. video resolution
1920x1080 (30p)
Storage types
SmartMedia
SD/SDHC/SDXC
USB
USB 1.1
USB 2.0 (480 Mbit/sec)
HDMI
Wireless
GPS
Battery
Li-Ion
Li-ion Battery Pack
Weight
290 g
248 g
Dimensions
111 x 67 x 59 mm
107.9 x 59.9 x 32.1 mm
Year
2001
2015
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Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
JVC GC-QX5HD diagonal
The diagonal of GC-QX5HD sensor is not 1/1.8 or 0.56" (14.1 mm) as you might expect, but approximately two thirds of
that value - 8.89 mm. If you want to know why, see
sensor sizes.
w = 7.11 mm
h = 5.33 mm
w = 7.11 mm
h = 5.33 mm
| Diagonal = √ | 7.11² + 5.33² | = 8.89 mm |
Panasonic TZ57 diagonal
The diagonal of TZ57 sensor is not 1/2.33 or 0.43" (10.9 mm) as you might expect, but approximately two thirds of
that value - 7.6 mm. If you want to know why, see
sensor sizes.
w = 6.08 mm
h = 4.56 mm
w = 6.08 mm
h = 4.56 mm
| Diagonal = √ | 6.08² + 4.56² | = 7.60 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
GC-QX5HD sensor area
Width = 7.11 mm
Height = 5.33 mm
Surface area = 7.11 × 5.33 = 37.90 mm²
Height = 5.33 mm
Surface area = 7.11 × 5.33 = 37.90 mm²
TZ57 sensor area
Width = 6.08 mm
Height = 4.56 mm
Surface area = 6.08 × 4.56 = 27.72 mm²
Height = 4.56 mm
Surface area = 6.08 × 4.56 = 27.72 mm²
Pixel pitch
Pixel pitch is the distance from the center of one pixel to the center of the
next measured in micrometers (µm). It can be calculated with the following formula:
| Pixel pitch = | sensor width in mm | × 1000 |
| sensor resolution width in pixels |
GC-QX5HD pixel pitch
Sensor width = 7.11 mm
Sensor resolution width = 2108 pixels
Sensor resolution width = 2108 pixels
| Pixel pitch = | 7.11 | × 1000 | = 3.37 µm |
| 2108 |
TZ57 pixel pitch
Sensor width = 6.08 mm
Sensor resolution width = 4612 pixels
Sensor resolution width = 4612 pixels
| Pixel pitch = | 6.08 | × 1000 | = 1.32 µm |
| 4612 |
Pixel area
The area of one pixel can be calculated by simply squaring the pixel pitch:
You could also divide sensor surface area with effective megapixels:
Pixel area = pixel pitch²
You could also divide sensor surface area with effective megapixels:
| Pixel area = | sensor surface area in mm² |
| effective megapixels |
GC-QX5HD pixel area
Pixel pitch = 3.37 µm
Pixel area = 3.37² = 11.36 µm²
Pixel area = 3.37² = 11.36 µm²
TZ57 pixel area
Pixel pitch = 1.32 µm
Pixel area = 1.32² = 1.74 µm²
Pixel area = 1.32² = 1.74 µm²
Pixel density
Pixel density can be calculated with the following formula:
One could also use this formula:
| Pixel density = ( | sensor resolution width in pixels | )² / 1000000 |
| sensor width in cm |
One could also use this formula:
| Pixel density = | effective megapixels × 1000000 | / 10000 |
| sensor surface area in mm² |
GC-QX5HD pixel density
Sensor resolution width = 2108 pixels
Sensor width = 0.711 cm
Pixel density = (2108 / 0.711)² / 1000000 = 8.79 MP/cm²
Sensor width = 0.711 cm
Pixel density = (2108 / 0.711)² / 1000000 = 8.79 MP/cm²
TZ57 pixel density
Sensor resolution width = 4612 pixels
Sensor width = 0.608 cm
Pixel density = (4612 / 0.608)² / 1000000 = 57.54 MP/cm²
Sensor width = 0.608 cm
Pixel density = (4612 / 0.608)² / 1000000 = 57.54 MP/cm²
Sensor resolution
Sensor resolution is calculated from sensor size and effective megapixels. It's slightly higher
than maximum (not interpolated) image resolution which is usually stated on camera specifications.
Sensor resolution is used in pixel pitch, pixel area, and pixel density formula.
For sake of simplicity, we're going to calculate it in 3 stages.
1. First we need to find the ratio between horizontal and vertical length by dividing the former with the latter (aspect ratio). It's usually 1.33 (4:3) or 1.5 (3:2), but not always.
2. With the ratio (r) known we can calculate the X from the formula below, where X is a vertical number of pixels:
3. To get sensor resolution we then multiply X with the corresponding ratio:
Resolution horizontal: X × r
Resolution vertical: X
1. First we need to find the ratio between horizontal and vertical length by dividing the former with the latter (aspect ratio). It's usually 1.33 (4:3) or 1.5 (3:2), but not always.
2. With the ratio (r) known we can calculate the X from the formula below, where X is a vertical number of pixels:
| (X × r) × X = effective megapixels × 1000000 → |
|
Resolution horizontal: X × r
Resolution vertical: X
GC-QX5HD sensor resolution
Sensor width = 7.11 mm
Sensor height = 5.33 mm
Effective megapixels = 3.34
Resolution horizontal: X × r = 1585 × 1.33 = 2108
Resolution vertical: X = 1585
Sensor resolution = 2108 x 1585
Sensor height = 5.33 mm
Effective megapixels = 3.34
| r = 7.11/5.33 = 1.33 |
|
Resolution vertical: X = 1585
Sensor resolution = 2108 x 1585
TZ57 sensor resolution
Sensor width = 6.08 mm
Sensor height = 4.56 mm
Effective megapixels = 16.00
Resolution horizontal: X × r = 3468 × 1.33 = 4612
Resolution vertical: X = 3468
Sensor resolution = 4612 x 3468
Sensor height = 4.56 mm
Effective megapixels = 16.00
| r = 6.08/4.56 = 1.33 |
|
Resolution vertical: X = 3468
Sensor resolution = 4612 x 3468
Crop factor
Crop factor or focal length multiplier is calculated by dividing the diagonal
of 35 mm film (43.27 mm) with the diagonal of the sensor.
| Crop factor = | 43.27 mm |
| sensor diagonal in mm |
GC-QX5HD crop factor
Sensor diagonal in mm = 8.89 mm
| Crop factor = | 43.27 | = 4.87 |
| 8.89 |
TZ57 crop factor
Sensor diagonal in mm = 7.60 mm
| Crop factor = | 43.27 | = 5.69 |
| 7.60 |
35 mm equivalent aperture
Equivalent aperture (in 135 film terms) is calculated by multiplying lens aperture
with crop factor (a.k.a. focal length multiplier).
GC-QX5HD equivalent aperture
Crop factor = 4.87
Aperture = f2.8 - f3.8
35-mm equivalent aperture = (f2.8 - f3.8) × 4.87 = f13.6 - f18.5
Aperture = f2.8 - f3.8
35-mm equivalent aperture = (f2.8 - f3.8) × 4.87 = f13.6 - f18.5
TZ57 equivalent aperture
Crop factor = 5.69
Aperture = f3.3 - f6.4
35-mm equivalent aperture = (f3.3 - f6.4) × 5.69 = f18.8 - f36.4
Aperture = f3.3 - f6.4
35-mm equivalent aperture = (f3.3 - f6.4) × 5.69 = f18.8 - f36.4
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