Temans....mo share nieh pengalaman motret merapi...

Date Time = 2006-05-20 01:04:32 ini hari kesekian motret merapi...hari2 biasa hal ini tidak pernah terjadi...but now ada sedikit trouble di hasil foto (see pic below).

Selidik punya seledik...so far ini terjadi karena pada saat bersamaan saya membawa HT dual band (UHF/VHF) yg kebetulan bisa jadi seismograf di band VHF 165.xxx utk mengetahui kapan guguran lavanya akan turun (maksudnya sih bisa siap2 gitu). So...mungkin ini bisa menjadi catatan sendiri buat temans sekalian, or mungkin ada yg mau kasih masukannya.

Berikut Exiff datanya:
[Image]
Make = NIKON CORPORATION
Model = NIKON D70s
Orientation = top/left
X Resolution = 300
Y Resolution = 300
Resolution Unit = inch
Software = Ver.1.00
Date Time = 2006-05-20 01:04:32
White Point = [313/1000, 329/1000]
Primary Chromaticities = [64/100, 33/100, 21/100, 71/100, 15/100, 6/100]
YCbCr Coefficients = 299/1000, 587/1000, 114/1000
YCbCr Positioning = co-sited
Exif IFD Pointer = Offset: 340

[Camera]
Exposure Time = 139.6"
F Number = F4.5
Exposure Program = Manual
Exif Version = Version 2.21
Date Time Original = 2006-05-20 01:04:32
Date Time Digitized = 2006-05-20 01:04:32
Components Configuration = YCbcr
Compressed Bits Per Pixel = 4
Exposure Bias Value = ±0EV
Max Aperture Value = F4.44
Metering Mode = Pattern
Light Source = unknown
Flash = Off
Focal Length = 70mm
Maker Note = 21348 Byte
User Comment =
Subsec Time =
Subsec Time Original =
Subsec Time Digitized =
Flashpix Version = Version 1.0
Color Space = Uncalibrated
Exif Image Width = 3008
Exif Image Height = 2000
Interoperability IFD Pointer = Offset: 22332
Sensing Method = One-chip color area sensor
File Source = DSC
Scene Type = A directly photographed image
CFA Pattern = [B,G], [G,R]
Custom Rendered = Normal process
Exposure Mode = Manual exposure
White Balance = Auto white balance
Digital Zoom Ratio = 1x
Focal Length In 35mm Film = 105mm
Scene Capture Type = Normal
Gain Control = Low gain up
Contrast = Hard
Saturation = Normal
Sharpness = Hard
Subject Distance Range = unknown
Gamma = 2.2

[Interoperability]
Interoperability Index = R03
Interoperability Version = Version 1.0

[Thumbnail Info]
Compression = JPEG Compressed (Thumbnail)
X Resolution = 300
Y Resolution = 300
Resolution Unit = inch
JPEG Interchange Format = Offset: 22472
JPEG Interchange Format Length = Length: 10736
YCbCr Positioning = co-sited

[Thumbnail]
Thumbnail = 160 x 120

[MakerNote (Nikon)]
Makernote Version = 0210
ISO Speed Used = 1600
Quality = FINE
White Balance = AUTO
Sharpening = MED.H
Focus Mode = MANUAL
Flash Setting = NORMAL
Auto Flash Mode =
White Balance Bias Value = -3
000D = 00, 01, 06, 00
Exposure Diff = 00, 01, 0C, 00
ThumbOffset = 1430
Flash Compensation = 00, 01, 06, 00
ISO Speed Requested = 1600
Photo corner coordinates = 0, 0, 3008, 2000 0017 = 00, 01, 06, 00
Flash Bracket Compensation Applied = 00, 01, 06, 00
AE Bracket Compensation Applied = 0EV
Tone Compensation (Contrast) = MID.H
Lens Type = Nikon D series Lens
Lens Min/Max Focal Length, Max Aperture = 180/10, 700/10, 35/10, 45/10
Flash Used = Flash Not Used
Auto Focus Area = 00, 00, 00, 00
Bracketing & Shooting Mode = 2
008A = 0
008B = 40, 01, 0C, 00
Colour Mode = MODE2
Lighting Type = NATURAL
Hue Adjustmen = 3
Noise Reduction = OFF
009A = 78/10, 78/10
00A0 = NO= 100446a6
00A2 = 2821439
00A3 = 0
Total Number of Shutter Releases for Camera = 5079
00A8 = 30, 31, 30, 30, 00, 4E, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00
Image optimisation = CUSTOM
Saturation = NORMAL
Digital Vari-Program =

Mungkin Koh Harlim bisa jawab....:-S

ooo saya juga pernah begitu... itu gara2 bulb nya kelamaan.. noisenya nongol semua, CCD nya mulai kepanasan jadi ungu2 begitu... ga ada hubungannya ama HT :D :D :D IMHO

betul kata pak Erwin.
coba liat di sini: http://www.kenrockwell.com/nikon/d200/d200-dark.htm

dan ini:
http://www.fotografer.net/isi/forum/topik.php?id=242940

Kala ada yg punya Canon DSLR mungkin bisa ikutan nyoba mas...

mmm.....mungkin juga yach.....iso 1600 dan terlalu lama di buka (kond saya bawa HT). Tapi kalo iso 400 so far hal tsb tidak terjadi (kond saya tidak bawa HT)

nb: ketika shutter menutup...gelombang HT nya seperti terhenti beberapa saat... (utk pic yg diatas)

exiff data (yg pendek aja yach):
[Image]
Make = NIKON CORPORATION
Model = NIKON D70s
Orientation = top/left
X Resolution = 300
Y Resolution = 300
Resolution Unit = inch
Software = Ver.1.00
Date Time = 2006-05-16 02:32:38
White Point = [313/1000, 329/1000]
YCbCr Positioning = co-sited
Exif IFD Pointer = Offset: 340

[Camera]
Exposure Time = 523.2"
F Number = F13
Exposure Program = Manual
Exif Version = Version 2.21
Date Time Original = 2006-05-16 02:32:38
Date Time Digitized = 2006-05-16 02:32:38

kyknya gelombang radio (apa elektromagnetik?) mempengaruhi sensor ccd kali neer... coba kamu eksperimen deketin HT di sisi kanan, atas, bawah dan kiri (dgn berbagai posisi HT menghadap ke bawah/atas/miring dsb). Coba cek gmn hasilnya?
Setuju dgn Om Judhi ttg Kenon, Coba di 5D-nya Fikky yg n.b. pake CMOS, apakah kena ngaruh jugak. ;)) ;))

Dulu saya juga sempet bingung akan hal ini...
tetapi setelah baca beberapa sumber, ternyata ini diakibatkan karena di dekat bagian kiri atas CCD ada sirkuit yang menghasilkan heat yang lebih tinggi dari bagian lain sehingga mempengaruhi sensitifitas CCD pada daerah tersebut...dan ini akan noticeable untuk long eksposure apalagi dengan setting ISO tinggi.
ini juga foto ketika hunting erupsi merapi tgl 15 Mei lalu...
hasil yang sama, di bagian kiri atas juga noisenya lebih tinggi dari bagian lain dengan motif sama seperti punya njenengan.....walaupun tidak begitu kentara karena saya pake ISO 400, 30s expose.

atau jangan-jangan...gara2 moto merapi blum minta ijin mbah M? :-? :D

Kayanya harus pake film deh , pada situasi2 tertentu ;)

iya ah, gara gara kelamaan Mas, saya juga pernah begitu.
Coba NR nye di set ke ON