HP Photosmart R727 vs. HP Photosmart 435
Comparison
| change cameras » | |||||
|
vs |
|
|||
| HP Photosmart R727 | HP Photosmart 435 | ||||
| check price » | check price » | ||||
Megapixels
6.20
3.34
Max. image resolution
2864 x 2160
2048 x 1536
Sensor
Sensor type
CCD
CCD
Sensor size
1/2.5" (~ 5.75 x 4.32 mm)
1/2.7" (~ 5.33 x 4 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 »
|
|
vs |
|
| 1.17 | : | 1 |
| (ratio) | ||
| HP Photosmart R727 | HP Photosmart 435 | |
Surface area:
| 24.84 mm² | vs | 21.32 mm² |
Difference: 3.52 mm² (17%)
R727 sensor is approx. 1.17x bigger than 435 sensor.
Note: You are comparing cameras of different generations.
There is a 3 year gap between HP R727 (2006) and HP 435 (2003).
All things being equal, newer sensor generations generally outperform the older.
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: 2.4 µm² (60%)
A pixel on HP 435 sensor is approx. 60% bigger than a pixel on HP R727.
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
HP R727
HP 435
Total megapixels
Effective megapixels
Optical zoom
3x
1x
Digital zoom
Yes
Yes
ISO sensitivity
Auto
Auto, 100, 200, 400
RAW
Manual focus
Normal focus range
50 cm
85 cm
Macro focus range
10 cm
85 cm
Focal length (35mm equiv.)
39 - 118 mm
36 mm
Aperture priority
No
No
Max. aperture
f3.5 - f4.2
f4
Metering
Centre weighted
Centre weighted
Exposure compensation
±2 EV (in 1/3 EV steps)
±2 EV (in 1/2 EV steps)
Shutter priority
No
No
Min. shutter speed
16 sec
1 sec
Max. shutter speed
1/2000 sec
1/1000 sec
Built-in flash
External flash
Viewfinder
None
Optical (tunnel)
White balance presets
5
4
Screen size
2.5"
1.5"
Screen resolution
153,600 dots
61,600 dots
Video capture
Max. video resolution
Storage types
Secure Digital
MultiMedia, Secure Digital
USB
USB 1.0
USB 1.0
HDMI
Wireless
GPS
Battery
HP Lithium-Ion rechargeable supplied
AA (2) batteries (NiMH recommended)
Weight
130 g
133 g
Dimensions
93 x 23 x 61 mm
116.7 x 57.2 x 39.1 mm
Year
2006
2003
Choose cameras to compare
Popular comparisons:
- HP Photosmart R727 vs. HP Photosmart R827
- HP Photosmart R727 vs. Samsung L100
- HP Photosmart R727 vs. HP Photosmart 435
- HP Photosmart R727 vs. Kodak EasyShare C530
- Canon EOS 200D vs. Canon EOS 750D
- Canon EOS 1300D vs. Canon EOS 700D
- Canon EOS 600D vs. Canon EOS 1300D
- Canon EOS 800D vs. Canon EOS 750D
- Canon EOS 1300D vs. Canon EOS 1200D
- Canon EOS 200D vs. Canon EOS 700D
- Canon EOS 1300D vs. Canon EOS 750D
Diagonal
Diagonal is calculated by the use of Pythagorean theorem:
where w = sensor width and h = sensor height
| Diagonal = √ | w² + h² |
HP R727 diagonal
The diagonal of R727 sensor is not 1/2.5 or 0.4" (10.2 mm) as you might expect, but approximately two thirds of
that value - 7.19 mm. If you want to know why, see
sensor sizes.
w = 5.75 mm
h = 4.32 mm
w = 5.75 mm
h = 4.32 mm
| Diagonal = √ | 5.75² + 4.32² | = 7.19 mm |
HP 435 diagonal
The diagonal of 435 sensor is not 1/2.7 or 0.37" (9.4 mm) as you might expect, but approximately two thirds of
that value - 6.66 mm. If you want to know why, see
sensor sizes.
w = 5.33 mm
h = 4.00 mm
w = 5.33 mm
h = 4.00 mm
| Diagonal = √ | 5.33² + 4.00² | = 6.66 mm |
Surface area
Surface area is calculated by multiplying the width and the height of a sensor.
R727 sensor area
Width = 5.75 mm
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
Height = 4.32 mm
Surface area = 5.75 × 4.32 = 24.84 mm²
435 sensor area
Width = 5.33 mm
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 mm²
Height = 4.00 mm
Surface area = 5.33 × 4.00 = 21.32 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 |
R727 pixel pitch
Sensor width = 5.75 mm
Sensor resolution width = 2871 pixels
Sensor resolution width = 2871 pixels
| Pixel pitch = | 5.75 | × 1000 | = 2 µm |
| 2871 |
435 pixel pitch
Sensor width = 5.33 mm
Sensor resolution width = 2108 pixels
Sensor resolution width = 2108 pixels
| Pixel pitch = | 5.33 | × 1000 | = 2.53 µm |
| 2108 |
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 |
R727 pixel area
Pixel pitch = 2 µm
Pixel area = 2² = 4 µm²
Pixel area = 2² = 4 µm²
435 pixel area
Pixel pitch = 2.53 µm
Pixel area = 2.53² = 6.4 µm²
Pixel area = 2.53² = 6.4 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 |
R727 pixel density
Sensor resolution width = 2871 pixels
Sensor width = 0.575 cm
Pixel density = (2871 / 0.575)² / 1000000 = 24.93 MP/cm²
Sensor width = 0.575 cm
Pixel density = (2871 / 0.575)² / 1000000 = 24.93 MP/cm²
435 pixel density
Sensor resolution width = 2108 pixels
Sensor width = 0.533 cm
Pixel density = (2108 / 0.533)² / 1000000 = 15.64 MP/cm²
Sensor width = 0.533 cm
Pixel density = (2108 / 0.533)² / 1000000 = 15.64 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
R727 sensor resolution
Sensor width = 5.75 mm
Sensor height = 4.32 mm
Effective megapixels = 6.20
Resolution horizontal: X × r = 2159 × 1.33 = 2871
Resolution vertical: X = 2159
Sensor resolution = 2871 x 2159
Sensor height = 4.32 mm
Effective megapixels = 6.20
| r = 5.75/4.32 = 1.33 |
|
Resolution vertical: X = 2159
Sensor resolution = 2871 x 2159
435 sensor resolution
Sensor width = 5.33 mm
Sensor height = 4.00 mm
Effective megapixels = 3.34
Resolution horizontal: X × r = 1585 × 1.33 = 2108
Resolution vertical: X = 1585
Sensor resolution = 2108 x 1585
Sensor height = 4.00 mm
Effective megapixels = 3.34
| r = 5.33/4.00 = 1.33 |
|
Resolution vertical: X = 1585
Sensor resolution = 2108 x 1585
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 |
R727 crop factor
Sensor diagonal in mm = 7.19 mm
| Crop factor = | 43.27 | = 6.02 |
| 7.19 |
435 crop factor
Sensor diagonal in mm = 6.66 mm
| Crop factor = | 43.27 | = 6.5 |
| 6.66 |
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).
R727 equivalent aperture
Crop factor = 6.02
Aperture = f3.5 - f4.2
35-mm equivalent aperture = (f3.5 - f4.2) × 6.02 = f21.1 - f25.3
Aperture = f3.5 - f4.2
35-mm equivalent aperture = (f3.5 - f4.2) × 6.02 = f21.1 - f25.3
435 equivalent aperture
Crop factor = 6.5
Aperture = f4
35-mm equivalent aperture = (f4) × 6.5 = f26
Aperture = f4
35-mm equivalent aperture = (f4) × 6.5 = f26
Enter your screen size (diagonal)
My screen size is
inches
Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a sensor won't be shown correctly.