HDB Buildings

Back to MobiDv H10  

Comments:

Click here to see same scene taken at the same time by MobiDV H18.

Click here to see same scene taken by Olympus D580.

Sharpness Criteria:
- The following zoom-ins into the pictures of H10, D580, and H18 are used to compare their sharpness with respect to each other. The location of the region of the zoom-in is highlighted by the yellow box below.

Location of Zoom-in Below

Zoom-in into H10 Picture

Zoom-in into D580 Picture

Zoom-in into H18 Picture

Camera Model	Edge transition between White and Red Color Regions
H10	3 Pixels
D580	2 Pixels
H18	4 Pixels

The number of pixels for the transition in the H10 zoom-in is 3 pixels while it is 2 pixels in the D580 zoom-in.  

Ratio of edge transition in 1 direction
= edge transition in H10 / edge transition in D580 = 3 / 2 = 1.5

Ratio of effective resolution 
= effective resolution for H10 / effective resolution for D580 =  2 MPixel / 4 MPixel = 0.5

Sharpness Discount Factor for H10 compared with D580
= ratio of effective resolution / ratio of edge transition in x and y directions = 0.5 / ( 1.5 x 1.5 ) = 0.222

Sharp Pixel Count
= 4 MPixel * 0.222 =   888 000 Pixels

Therefore, the count of pixels that contributes to the sharpness of the image by H10 (2 MPixel image sensor) is 888 000.   

Tree Leaves Appear too Dark:
- The tree leaves in many regions around the picture appears too dark. An example is shown below by comparing it with same picture taken by H18.

Both H18 and H10 were in auto mode when taking the pictures of this scene.
The camera settings used in both cases are the same:

Aperture Size = F / 3.5, Shutter Speed = 1 / 1433 sec, ISO = 100

Location of Zoom-in Below

Zoom-in into H10 Picture

Zoom-in into H18 Picture

Below shows comparison of tree leaves between pictures of the same scene taken by H18, H10 and Olympus D580.

Location of Zoom-in Below

Zoom-in into H10 Picture

Zoom-in into Olympus D580 Picture

Zoom-in into H18 Picture

The tree leaves in the H10 zoom-in above has less details compared with the D580 zoom-in.

Back to MobiDv H10                                                                                                                               Back to Top