fotografi digital session 4
TRANSCRIPT
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Digital Photography
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Prinsip :cahaya masuk ke ruang gelap melalui lubang kecil,akan menghasilkan bentuk sumber cahaya, sudah ditemukan sejak abad 5 SM.
Kamera Obscura pertama dibuat oleh Abu Ali Al-Hasan Ibn al-Haitham(965-1039 AD).
Camera Obscura/Al-Bayt al-Muthlim/Kamar Gelap / kamera Pinhole
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Prinsip Dasar Kamera
Cahaya masuk ke kamera melalui lensa. Objek yang akan diambil gambarnya dapat dilihat di viewfinder.
Pada kamera analog cahaya tersebut digunakan untuk membakar film.
Pada kamera digital cahaya diterima oleh sensor yang kemudian diubah ke data digital. Data tersebut kemudian disimpan pada media penyimpan seperti SD card, CF, MMC, dll.
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Compact Camera
SLR
1. Compact, lightweight, and easy to use
2. Parallax: Difference between the view range as
seen through the viewfinder and the actual
photographed area
3. Non-changeable lens
1. Larger and heavier
2. No parallax
3. Rich photographic expressions with changeable
lenses
Built-in Sensor
LCD Monitor
LCD Monitor
Built-in
Sensor
Built-in Main
Mirror
Viewfinder
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Resolusi
• Jumlah titik yang membentuk gambar kehalusan dan detil gambar
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Resolusi
• Resolusi cetakan foto yang baik 200 – 300 dpi (dots per inch)
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Focus Exposure Shutter Speed Aperture Focal
Length/Zoom Depth of Field Film Speed/ISO
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Fokus
• Area yang terlihat tajam pada foto
Focused area
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• Macro Fokus jarak dekat
• Infinity Fokus jarak jauh
• Manual Focus
Fokus
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• Periksa Fokus pada foto setelah memotret
Fokus
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Pencahayaan/Exposure
• Terlalu terang over-exposed
• Terlalu gelap under-exposed
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Pencahayaan/Exposure
• Membaca histogram ketika LCD tidak terlihat jelas
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Pencahayaan/Exposure
?
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White Balance
• White Balance pilihan pengaturan kompensasi temperatur warna
• cool/dingin – biru • warm/hangat – merah
● warm ● cool
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Shutter Speed
Slower (more light) Faster (less light)
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Aperture
Small Aperture
Large Aperture
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Drive
• Single Shoot • Continuous Shoot • Self-Timer
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Flash
• Flash Compensation • Red Eye Correction • Bounced Flash
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Backlight photo
(without flash)
Daylight
synchronization (using
flash)
Flash
• Fill in Flash
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ISO (Sensitivitas terhadap Cahaya)
• ISO rendah kecepatan dan jumlah noise rendah = tempat terang
• ISO tinggi kecepatan dan jumlah noise tinggi = tempat gelap
ISO 50
ISO 100
ISO 200
ISO 400
ISO 800
ISO 1600
ISO 3200
Low
sensitivity
High
sensitivity
ISO 400 equivalent
ISO 50 equivalent
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ISO 100
ISO 800
ISO 1600
ISO (Sensitivitas terhadap Cahaya)
(Flash on) low ISO (Flash off) high ISO
EOS 500D + EF-S18-55mm f/3.5-5.6 IS
ISO 6400
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Tends to be forgotten… but important for better photography
Distinct Difference!!
Without a lens hood With a lens hood
Lens Hood
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Komposisi
• Golden Points • Rule of Third
● Center ● Rule of Third
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Komposisi
• High Angle Shots menciptakan efek kedekatan dengan lingkungan
• Low Angle Shots menciptakan efek kegagahan
● Low Angle
● High Angle