const ApertureSize aperture_sizes_table[] = { // id, prop_id, name (typedef for struct is at platform.h) { 0, 200, "2.0" }, { 1, 224, "2.2" }, { 2, 256, "2.5" }, { 3, 288, "2.8" }, { 4, 320, "3.2" }, { 5, 352, "3.5" }, { 6, 384, "4.0" }, { 7, 416, "4.5" }, { 8, 448, "5.0" }, { 9, 480, "5.6" }, { 10, 512, "6.3" }, { 11, 544, "7.1" }, { 12, 576, "8.0" },};
maybe the lens of Ixus 300 is from S95 G12 and so contain a Iris and Ixus 1000 have a lens without Iris and ND Filter.Is that possible ?
Maybe it set different aperture by zooming lenzes. When you zoom, camera show higher aperture values, because as I understand zoom reduce light power.
Where to read about the structure of the raw-files for this model?
Note: 2x2 CFA means that your sensor have RGGB CFA (RED, GREEN, GREEN, BLUE dispose in 2x2 matrix) then:first line is RGRGRGRGRGRG...second line is: GBGBGBGBGBGB...third line is: RGRGRGRG...and so on ...
#define cam_CFAPattern 0x02010100 // Red Green Green Blue
(CHDK) RAW files have no "defined" structure. It a "binary" files containing only "RAW" Data from Image Sensor. CHDK "just" dumps the RAW Image Sensor Data (Buffer) from Camera Memory into a "RAW" file (CRW_0001.CRW for example).
SD4000 Image Sensor use CFA RGGB pattern:Quote from: Lebeau on 18 / February / 2011, 20:16:09Note: 2x2 CFA means that your sensor have RGGB CFA (RED, GREEN, GREEN, BLUE dispose in 2x2 matrix) then:first line is RGRGRGRGRGRG...second line is: GBGBGBGBGBGB...third line is: RGRGRGRG...and so on ...Code: [Select]#define cam_CFAPattern 0x02010100 // Red Green Green Blue
If you just want to view/edit/etc. RAW enable DNG in CHDK ("DNG format") or convert RAW files to DNG on your computer.Most software should be able use DNG files from CHDK.
I decided to check how DNG format works in 300HS, but when I was trying to switch it on - DNG format [ON] I've got message - Cannot load CHDK/badpixel.bin. Looks like it concern menu item that one position upper - Bad pixel removal, but it off in my case and I don't need it as long as camera new.
How many bits are used for each point in a saved file? 12-bit?
There is no software that converts the file from 300HS.
For what we use these defines?#define CAM_ACTIVE_AREA_X1 116#define CAM_ACTIVE_AREA_Y1 14#define CAM_ACTIVE_AREA_X2 3788#define CAM_ACTIVE_AREA_Y2 2766
During this test I found that actually lenzes of 300HS have more distortion than we can see on JPG.
Is it possible to make in CHDK option that allow save JPG image as we can see on DNG - without distortion correction and noise reduction?
Quote from: Yury on 05 / March / 2011, 21:22:05During this test I found that actually lenzes of 300HS have more distortion than we can see on JPG. Yes, Barel distortion is rather strong compared to my SD900. Made a simular compare with JPG and DNG.
But why don't you convert DNG to JPG, or do your own postprocessing on DNG and than convert to JPG?!?
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