pi@raspberrypi ~/webpy $ lsusb
Bus 001 Device 013: ID 04b0:042c Nikon Corp.

########################################################

pi@raspberrypi ~/webpy $ env LANG=C gphoto2 --debug --debug-logfile=
D3100-logifle.txt --capture-preview
                                                                               
*** Error ***              
Sorry, your Nikon camera does not support LiveView mode
*** Error (-6: 'Unsupported operation') ***  

###########################################################

pi@raspberrypi ~/webpy $ gphoto2 --summary
Camera summary:                                                                
Manufacturer: Nikon Corporation
Model: D3200
  Version: V1.00
  Serial Number: nnnnnnn0000000000000000000000000
Vendor Extension ID: 0xa (1.0)
Vendor Extension Description: microsoft.com: 1.0

Capture Formats: JPEG Undefined Type
Display Formats: JPEG, Undefined Type, Association/Directory, DPOF, Script,
Apple Quicktime

Device Capabilities:
File Download, File Deletion, File Upload
Generic Image Capture, No Open Capture, No vendor specific capture

Storage Devices Summary:
store_00010001:
StorageDescription: None
VolumeLabel: EOS_DIGITAL [Slot 1]
Storage Type: Removable RAM (memory card)
Filesystemtype: Digital Camera Layout (DCIM)
Access Capability: Read Only with Object deletion
Maximum Capability: 16138633216 (15391 MB)
Free Space (Bytes): 12849348608 (12254 MB)
Free Space (Images): 823

Device Property Summary:
Battery Level(0x5001):(read only) (type=0x2) Range [0 - 100, step 1] value: 35%
(35)
Image Size(0x5003):(readwrite) (type=0xffff) Enumeration [
'6016x4000',
'4512x3000',
'3008x2000'
] value: '6016x4000'
Compression Setting(0x5004):(readwrite) (type=0x2) Enumeration [0,1,2,4,7] value: JPEG Fine (2)
White Balance(0x5005):(readwrite) (type=0x4) Enumeration [2,4,5,6,7,32784,32785,32787] value: Automatic (2)
F-Number(0x5007):(readwrite) (type=0x4) Enumeration [500,560,630,710,800,900,1000,1100,1300,1400,1600,1800,2000,2200,2500,2900,3200] value: f/5 (500)
Focal Length(0x5008):(read only) (type=0x6) Range [1800 - 5500, step 1] value: 34 mm (3400)
Focus Mode(0x500a):(read only) (type=0x4) Enumeration [1,32784,32785,32786,32787] value: AF-A (32786)
Exposure Metering Mode(0x500b):(readwrite) (type=0x4) Enumeration [2,3,4] value: Multi-spot (3)
Flash Mode(0x500c):(readwrite) (type=0x4) Enumeration [4,32784,32785,32786,32787] value: Auto (32784)
Exposure Time(0x500d):(read only) (type=0x6) Enumeration [2,3,4,5,6,8,10,12,15,20,25,31,40,50,62,80,100,125,166,200,250,333,400,500,666,769,1000,1250,1666,2000,2500,3333,4000,5000,6250,7692,10000,13000,16000,20000,25000,30000,40000,50000,60000,80000,100000,130000,150000,200000,250000,300000] value: 0.017 sec (1666)
Exposure Program Mode(0x500e):(read only) (type=0x4) Enumeration [1,2,3,4,32784,32785,32786,32787,32788,32789,32790,32791] value: A (3)
Exposure Index (film speed ISO)(0x500f):(readwrite) (type=0x4) Enumeration [100,200,400,800,1600,3200,6400,12800] value: ISO 400 (400)
Exposure Bias Compensation(0x5010):(readwrite) (type=0x3) Enumeration [-5000,-4666,-4333,-4000,-3666,-3333,-3000,-2666,-2333,-2000,-1666,-1333,-1000,-666,-333,0,333,666,1000,1333,1666,2000,2333,2666,3000,3333,3666,4000,4333,4666,5000] value: 0.0 stops (0)
Date & Time(0x5011):(readwrite) (type=0xffff) '20130531T143650'
Still Capture Mode(0x5013):(readwrite) (type=0x4) Enumeration [1,2,32785,32788,32789,32790] value: Single Shot (1)
Burst Number(0x5018):(readwrite) (type=0x4) Range [1 - 100, step 1] value: 1
Focus Metering Mode(0x501c):(readwrite) (type=0x4) Enumeration [2,32784,32785,32786] value: Closest Subject (32785)
Property 0xd303:(read only) (type=0x2) 1
Property 0xd406:(readwrite) (type=0xffff) 'Windows/6.0.5330.0 MTPClassDriver/ 6.0.5330.0'
Property 0xd407:(read only) (type=0x6) 1

##################################################################
gphoto2 --list-all-config
/main/settings/datetime
Label: Camera Date and Time
Type: DATE
Current: 1369982454
Printable: Fri May 31 14:40:54 2013
/main/settings/fastfs
Label: Fast Filesystem
Type: TOGGLE
Current: 1
/main/settings/capturetarget
Label: Capture Target
Type: RADIO
Current: Memory card
Choice: 0 Internal RAM
Choice: 1 Memory card
/main/status/serialnumber
Label: Serial Number
Type: TEXT
Current: nnnnnnn0000000000000000000000000
/main/status/manufacturer
Label: Camera Manufacturer
Type: TEXT
Current: Nikon Corporation
/main/status/cameramodel
Label: Camera Model
Type: TEXT
Current: D3200
/main/status/deviceversion
Label: Device Version
Type: TEXT
Current: V1.00
/main/status/vendorextension
Label: Vendor Extension
Type: TEXT
Current: microsoft.com: 1.0
/main/status/batterylevel
Label: Battery Level
Type: TEXT
Current: 35%
/main/imgsettings/imagesize
Label: Image Size
Type: RADIO
Current: 6016x4000
Choice: 0 6016x4000
Choice: 1 4512x3000
Choice: 2 3008x2000
/main/imgsettings/iso
Label: ISO Speed
Type: RADIO
Current: 400
Choice: 0 100
Choice: 1 200
Choice: 2 400
Choice: 3 800
Choice: 4 1600
Choice: 5 3200
Choice: 6 6400
Choice: 7 12800
/main/imgsettings/whitebalance
Label: WhiteBalance
Type: RADIO
Current: Automatic
Choice: 0 Automatic
Choice: 1 Daylight
Choice: 2 Fluorescent
Choice: 3 Tungsten
Choice: 4 Flash
Choice: 5 Cloudy
Choice: 6 Shade
Choice: 7 Preset
/main/capturesettings/exposurecompensation
Label: Exposure Compensation
Type: RADIO
Current: 0
Choice: 0 -5000
Choice: 1 -4666
Choice: 2 -4333
Choice: 3 -4000
Choice: 4 -3666
Choice: 5 -3333
Choice: 6 -3000
Choice: 7 -2666
Choice: 8 -2333
Choice: 9 -2000
Choice: 10 -1666
Choice: 11 -1333
Choice: 12 -1000
Choice: 13 -666
Choice: 14 -333
Choice: 15 0
Choice: 16 333
Choice: 17 666
Choice: 18 1000
Choice: 19 1333
Choice: 20 1666
Choice: 21 2000
Choice: 22 2333
Choice: 23 2666
Choice: 24 3000
Choice: 25 3333
Choice: 26 3666
Choice: 27 4000
Choice: 28 4333
Choice: 29 4666
Choice: 30 5000
/main/capturesettings/flashmode
Label: Flash Mode
Type: RADIO
Current: Auto
Choice: 0 Red-eye automatic
Choice: 1 Auto
Choice: 2 Auto Slow Sync
Choice: 3 Rear Curtain Sync + Slow Sync
Choice: 4 Red-eye Reduction + Slow Sync
/main/capturesettings/f-number
Label: F-Number
Type: RADIO
Current: f/5
Choice: 0 f/5
Choice: 1 f/5.6
Choice: 2 f/6.3
Choice: 3 f/7.1
Choice: 4 f/8
Choice: 5 f/9
Choice: 6 f/10
Choice: 7 f/11
Choice: 8 f/13
Choice: 9 f/14
Choice: 10 f/16
Choice: 11 f/18
Choice: 12 f/20
Choice: 13 f/22
Choice: 14 f/25
Choice: 15 f/29
Choice: 16 f/32
/main/capturesettings/imagequality
Label: Image Quality
Type: RADIO
Current: JPEG Fine
Choice: 0 JPEG Basic
Choice: 1 JPEG Normal
Choice: 2 JPEG Fine
Choice: 3 NEF (Raw)
Choice: 4 NEF+Fine
/main/capturesettings/focallength
Label: Focal Length
Type: RANGE
Current: 34
Bottom: 18
Top: 55
Step: 0.01
/main/capturesettings/focusmode
Label: Focus Mode
Type: RADIO
Current: AF-A
Choice: 0 Manual
Choice: 1 AF-S
Choice: 2 AF-C
Choice: 3 AF-A
Choice: 4 Unknown value 8013
/main/capturesettings/expprogram
Label: Exposure Program
Type: RADIO
Current: A
Choice: 0 M
Choice: 1 P
Choice: 2 A
Choice: 3 S
Choice: 4 Auto
Choice: 5 Portrait
Choice: 6 Landscape
Choice: 7 Macro
Choice: 8 Sports
Choice: 9 Night Portrait
Choice: 10 Night Landscape
Choice: 11 Children
/main/capturesettings/capturemode
Label: Still Capture Mode
Type: RADIO
Current: Single Shot
Choice: 0 Single Shot
Choice: 1 Burst
Choice: 2 Timer
Choice: 3 Quick Response Remote
Choice: 4 Delayed Remote
Choice: 5 Quiet Release
/main/capturesettings/focusmetermode
Label: Focus Metering Mode
Type: RADIO
Current: Closest Subject
Choice: 0 Multi-spot
Choice: 1 Single Area
Choice: 2 Closest Subject
Choice: 3 Group Dynamic
/main/capturesettings/exposuremetermode
Label: Exposure Metering Mode
Type: RADIO
Current: Multi Spot
Choice: 0 Center Weighted
Choice: 1 Multi Spot
Choice: 2 Center Spot
/main/capturesettings/shutterspeed
Label: Shutter Speed
Type: RADIO
Current: 0.1000s
Choice: 0 0.0002s
Choice: 1 0.0003s
Choice: 2 0.0004s
Choice: 3 0.0005s
Choice: 4 0.0006s
Choice: 5 0.0008s
Choice: 6 0.0010s
Choice: 7 0.0012s
Choice: 8 0.0015s
Choice: 9 0.0020s
Choice: 10 0.0025s
Choice: 11 0.0031s
Choice: 12 0.0040s
Choice: 13 0.0050s
Choice: 14 0.0062s
Choice: 15 0.0080s
Choice: 16 0.0100s
Choice: 17 0.0125s
Choice: 18 0.0166s
Choice: 19 0.0200s
Choice: 20 0.0250s
Choice: 21 0.0333s
Choice: 22 0.0400s
Choice: 23 0.0500s
Choice: 24 0.0666s
Choice: 25 0.0769s
Choice: 26 0.1000s
Choice: 27 0.1250s
Choice: 28 0.1666s
Choice: 29 0.2000s
Choice: 30 0.2500s
Choice: 31 0.3333s
Choice: 32 0.4000s
Choice: 33 0.5000s
Choice: 34 0.6250s
Choice: 35 0.7692s
Choice: 36 1.0000s
Choice: 37 1.3000s
Choice: 38 1.6000s
Choice: 39 2.0000s
Choice: 40 2.5000s
Choice: 41 3.0000s
Choice: 42 4.0000s
Choice: 43 5.0000s
Choice: 44 6.0000s
Choice: 45 8.0000s
Choice: 46 10.0000s
Choice: 47 13.0000s
Choice: 48 15.0000s
Choice: 49 20.0000s
Choice: 50 25.0000s
Choice: 51 30.0000s
/main/capturesettings/burstnumber
Label: Burst Number
Type: RANGE
Current: 1
Bottom: 1
Top: 100
Step: 1
/main/other/5001
Label: Battery Level
Type: MENU
Current: 35
Choice: 0 0
Choice: 1 1
Choice: 2 2
Choice: 3 3
Choice: 4 4
Choice: 5 5
Choice: 6 6
Choice: 7 7
Choice: 8 8
Choice: 9 9
Choice: 10 10
Choice: 11 11
Choice: 12 12
Choice: 13 13
Choice: 14 14
Choice: 15 15
Choice: 16 16
Choice: 17 17
Choice: 18 18
Choice: 19 19
Choice: 20 20
Choice: 21 21
Choice: 22 22
Choice: 23 23
Choice: 24 24
Choice: 25 25
Choice: 26 26
Choice: 27 27
Choice: 28 28
Choice: 29 29
Choice: 30 30
Choice: 31 31
Choice: 32 32
Choice: 33 33
Choice: 34 34
Choice: 35 35
Choice: 36 36
Choice: 37 37
Choice: 38 38
Choice: 39 39
Choice: 40 40
Choice: 41 41
Choice: 42 42
Choice: 43 43
Choice: 44 44
Choice: 45 45
Choice: 46 46
Choice: 47 47
Choice: 48 48
Choice: 49 49
Choice: 50 50
Choice: 51 51
Choice: 52 52
Choice: 53 53
Choice: 54 54
Choice: 55 55
Choice: 56 56
Choice: 57 57
Choice: 58 58
Choice: 59 59
Choice: 60 60
Choice: 61 61
Choice: 62 62
Choice: 63 63
Choice: 64 64
Choice: 65 65
Choice: 66 66
Choice: 67 67
Choice: 68 68
Choice: 69 69
Choice: 70 70
Choice: 71 71
Choice: 72 72
Choice: 73 73
Choice: 74 74
Choice: 75 75
Choice: 76 76
Choice: 77 77
Choice: 78 78
Choice: 79 79
Choice: 80 80
Choice: 81 81
Choice: 82 82
Choice: 83 83
Choice: 84 84
Choice: 85 85
Choice: 86 86
Choice: 87 87
Choice: 88 88
Choice: 89 89
Choice: 90 90
Choice: 91 91
Choice: 92 92
Choice: 93 93
Choice: 94 94
Choice: 95 95
Choice: 96 96
Choice: 97 97
Choice: 98 98
Choice: 99 99
Choice: 100 100
/main/other/5003
Label: Image Size
Type: MENU
Current: 6016x4000
Choice: 0 6016x4000
Choice: 1 4512x3000
Choice: 2 3008x2000
/main/other/5004
Label: Compression Setting
Type: MENU
Current: 2
Choice: 0 0
Choice: 1 1
Choice: 2 2
Choice: 3 4
Choice: 4 7
/main/other/5005
Label: White Balance
Type: MENU
Current: 2
Choice: 0 2
Choice: 1 4
Choice: 2 5
Choice: 3 6
Choice: 4 7
Choice: 5 32784
Choice: 6 32785
Choice: 7 32787
/main/other/5007
Label: F-Number
Type: MENU
Current: 500
Choice: 0 500
Choice: 1 560
Choice: 2 630
Choice: 3 710
Choice: 4 800
Choice: 5 900
Choice: 6 1000
Choice: 7 1100
Choice: 8 1300
Choice: 9 1400
Choice: 10 1600
Choice: 11 1800
Choice: 12 2000
Choice: 13 2200
Choice: 14 2500
Choice: 15 2900
Choice: 16 3200
/main/other/5008
Label: Focal Length
Type: RANGE
Current: 3400
Bottom: 1800
Top: 5500
Step: 1
/main/other/500a
Label: Focus Mode
Type: MENU
Current: 32786
Choice: 0 1
Choice: 1 32784
Choice: 2 32785
Choice: 3 32786
Choice: 4 32787
/main/other/500b
Label: Exposure Metering Mode
Type: MENU
Current: 3
Choice: 0 2
Choice: 1 3
Choice: 2 4
/main/other/500c
Label: Flash Mode
Type: MENU
Current: 32784
Choice: 0 4
Choice: 1 32784
Choice: 2 32785
Choice: 3 32786
Choice: 4 32787
/main/other/500d
Label: Exposure Time
Type: MENU
Current: 1000
Choice: 0 2
Choice: 1 3
Choice: 2 4
Choice: 3 5
Choice: 4 6
Choice: 5 8
Choice: 6 10
Choice: 7 12
Choice: 8 15
Choice: 9 20
Choice: 10 25
Choice: 11 31
Choice: 12 40
Choice: 13 50
Choice: 14 62
Choice: 15 80
Choice: 16 100
Choice: 17 125
Choice: 18 166
Choice: 19 200
Choice: 20 250
Choice: 21 333
Choice: 22 400
Choice: 23 500
Choice: 24 666
Choice: 25 769
Choice: 26 1000
Choice: 27 1250
Choice: 28 1666
Choice: 29 2000
Choice: 30 2500
Choice: 31 3333
Choice: 32 4000
Choice: 33 5000
Choice: 34 6250
Choice: 35 7692
Choice: 36 10000
Choice: 37 13000
Choice: 38 16000
Choice: 39 20000
Choice: 40 25000
Choice: 41 30000
Choice: 42 40000
Choice: 43 50000
Choice: 44 60000
Choice: 45 80000
Choice: 46 100000
Choice: 47 130000
Choice: 48 150000
Choice: 49 200000
Choice: 50 250000
Choice: 51 300000
/main/other/500e
Label: Exposure Program Mode
Type: MENU
Current: 3
Choice: 0 1
Choice: 1 2
Choice: 2 3
Choice: 3 4
Choice: 4 32784
Choice: 5 32785
Choice: 6 32786
Choice: 7 32787
Choice: 8 32788
Choice: 9 32789
Choice: 10 32790
Choice: 11 32791
/main/other/500f
Label: Exposure Index (film speed ISO)
Type: MENU
Current: 400
Choice: 0 100
Choice: 1 200
Choice: 2 400
Choice: 3 800
Choice: 4 1600
Choice: 5 3200
Choice: 6 6400
Choice: 7 12800
/main/other/5010
Label: Exposure Bias Compensation
Type: MENU
Current: 0
Choice: 0 -5000
Choice: 1 -4666
Choice: 2 -4333
Choice: 3 -4000
Choice: 4 -3666
Choice: 5 -3333
Choice: 6 -3000
Choice: 7 -2666
Choice: 8 -2333
Choice: 9 -2000
Choice: 10 -1666
Choice: 11 -1333
Choice: 12 -1000
Choice: 13 -666
Choice: 14 -333
Choice: 15 0
Choice: 16 333
Choice: 17 666
Choice: 18 1000
Choice: 19 1333
Choice: 20 1666
Choice: 21 2000
Choice: 22 2333
Choice: 23 2666
Choice: 24 3000
Choice: 25 3333
Choice: 26 3666
Choice: 27 4000
Choice: 28 4333
Choice: 29 4666
Choice: 30 5000
/main/other/5011
Label: Date & Time
Type: TEXT
Current: 20130531T144054
/main/other/5013
Label: Still Capture Mode
Type: MENU
Current: 1
Choice: 0 1
Choice: 1 2
Choice: 2 32785
Choice: 3 32788
Choice: 4 32789
Choice: 5 32790
/main/other/5018
Label: Burst Number
Type: MENU
Current: 1
Choice: 0 1
Choice: 1 2
Choice: 2 3
Choice: 3 4
Choice: 4 5
Choice: 5 6
Choice: 6 7
Choice: 7 8
Choice: 8 9
Choice: 9 10
Choice: 10 11
Choice: 11 12
Choice: 12 13
Choice: 13 14
Choice: 14 15
Choice: 15 16
Choice: 16 17
Choice: 17 18
Choice: 18 19
Choice: 19 20
Choice: 20 21
Choice: 21 22
Choice: 22 23
Choice: 23 24
Choice: 24 25
Choice: 25 26
Choice: 26 27
Choice: 27 28
Choice: 28 29
Choice: 29 30
Choice: 30 31
Choice: 31 32
Choice: 32 33
Choice: 33 34
Choice: 34 35
Choice: 35 36
Choice: 36 37
Choice: 37 38
Choice: 38 39
Choice: 39 40
Choice: 40 41
Choice: 41 42
Choice: 42 43
Choice: 43 44
Choice: 44 45
Choice: 45 46
Choice: 46 47
Choice: 47 48
Choice: 48 49
Choice: 49 50
Choice: 50 51
Choice: 51 52
Choice: 52 53
Choice: 53 54
Choice: 54 55
Choice: 55 56
Choice: 56 57
Choice: 57 58
Choice: 58 59
Choice: 59 60
Choice: 60 61
Choice: 61 62
Choice: 62 63
Choice: 63 64
Choice: 64 65
Choice: 65 66
Choice: 66 67
Choice: 67 68
Choice: 68 69
Choice: 69 70
Choice: 70 71
Choice: 71 72
Choice: 72 73
Choice: 73 74
Choice: 74 75
Choice: 75 76
Choice: 76 77
Choice: 77 78
Choice: 78 79
Choice: 79 80
Choice: 80 81
Choice: 81 82
Choice: 82 83
Choice: 83 84
Choice: 84 85
Choice: 85 86
Choice: 86 87
Choice: 87 88
Choice: 88 89
Choice: 89 90
Choice: 90 91
Choice: 91 92
Choice: 92 93
Choice: 93 94
Choice: 94 95
Choice: 95 96
Choice: 96 97
Choice: 97 98
Choice: 98 99
Choice: 99 100
/main/other/501c
Label: Focus Metering Mode
Type: MENU
Current: 32785
Choice: 0 2
Choice: 1 32784
Choice: 2 32785
Choice: 3 32786
/main/other/d303
Label: PTP Property 0xd303
Type: TEXT
Current: 1
/main/other/d406
Label: PTP Property 0xd406
Type: TEXT
Current: Windows/6.0.5330.0 MTPClassDriver/6.0.5330.0
/main/other/d407
Label: PTP Property 0xd407
Type: TEXT
Current: 1

Device info:
Manufacturer: Nikon Corporation
  Model: D3200
  device version: V1.00
  serial number: 'nnnnnnn0000000000000000000000000'
Vendor extension ID: 0x0000000a
Vendor extension version: 100
Vendor extension description: microsoft.com: 1.0
Functional Mode: 0x0000
PTP Standard Version: 100
Supported operations:
  0x1001
  0x1002
  0x1003
  0x1004
  0x1005
  0x1006
  0x1007
  0x1008
  0x1009
  0x100a
  0x100b
  0x100c
  0x100d
  0x100e
  0x100f
  0x1014
  0x1015
  0x1016
  0x101b
  0x9801
  0x9802
  0x9803
  0x9805
Events Supported:
  0x4001
  0x4002
  0x4004
  0x4005
  0x4006
  0x4009
  0x400a
  0x400c
  0x400d
  0x4008
Device Properties Supported:
  0x5001
  0x5003
  0x5004
  0x5005
  0x5007
  0x5008
  0x500a
  0x500b
  0x500c
  0x500d
  0x500e
  0x500f
  0x5010
  0x5011
  0x5013
  0x5018
  0x501c
  0xd303
  0xd406
  0xd407