• Imaging Resource Comparometer – Digital Camera Image Comparison Page
• DXO Mark (Benchmark? of Camera Sensors)

SONY Camera

• SONY Alpha A57
  • Sony Alpha A57 評測
• SONY SLT A55V SONY’s page

  Battery: 使用觀景器模式：約 330張, 使用LCD屏幕：約 380 張 (根據CIPA的計算方法)

  • AVCHD (1920×1080): 16Mbps data rate, 2.2MB/s, 15min = 2GB
  • VGA (640×480): 3Mbps data rate, 0.4MB/s, 15min = 360MB
  • Sony A55 test result

    A55V電力紀錄:
    今日拍左1200 files(多數連拍+video)仲有5%電量;
    昨天拍左800+ files(多閃光燈+連拍)仲有3,40%電量;
    所以唔好再話1080mah電量唔夠用,8Gb card都打爆了...

• SONY Alpha A550 SONY’s page

  Battery: 使用觀景器︰950張相片, 即時檢視模式︰480張相片(CIPA標準)

  Sensor: APS-C 23.4 x 15.6 mm

  內建閃光燈GN 12(ISO 100),回電 約4秒

• SONY Alpha A580

  16MP, 599g body (w/battery?)

  閃燈範圍: GN 12

  ISO100 -> 200 GN 乘以 1.414

  ISO100 -> 400 GN 乘以 2

• SONY SLT A55V

  16MP, FullHD Movie x 60fps (17Mbps only?), 10fps, GPS, 15 points focus, 441g (w/battery?), battery 1080mAh, only about 380 photos

  • DC Fever A55 review
  • Sony A55 與A33單反相機被指有七大弊病
  • Problems

    1) 開左10 FPS連拍, Fix 1/500, 同追焦真係差d. 落番6 FPS或3 FPS就正常
    2) 開左防手震, 最長只可record 9 mins Movie. 關左防手震就正常番有30 mins
    3) 減光30%, 減光1級係肯定的, 不過SONY個CMOS都OK的, 我都好常用ISO800-3200呢

  • A55 movie overheat limitation

    Env: 20 degree, 防手震On: 9min, Off: 29min

    Env: 30 degree, 防手震On: 6min, Off: 13min

• SONY SLT A33

  14MP, FullHD Movie x 60fps, 7fps, 441g

• SONY Alpha A550

  14MP, ~650g body w/battery

• Nikon D3000

  10.2MP, 536g w/battery, AF-S lens only if need auto-focus

• Nikon D7000

  16MP, FullHD Movie x 24fps, 6fps, 39 points focus, 780g body w/battery

• Nikon D40

  6MP, 475g body w/battery

• A550 supported Lens
• Minolta / Sony alpha (a-mount) lens database
• DCFever: 二手買賣區
  • Keyword: Sony
• DCHome.net: 報料報價特區
• DCHome.net: 二手買賣區
• Digital Camera Sensor size compare
• Image stabilization
  • Optical Image Stabilisation Comparison A55 vs. Sigma 18-250 OS
• View Angles
  • Sony 1.5x
  • 35mm – APSC 44 deg, FF 63 deg
  • 50mm – APSC 32 deg, FF 47 deg
  • 85mm – APSC 19 deg, FF 29 deg
  • 30mm – APSC 50 deg
  • 100mm – APSC 16 deg, FF 24 deg
  • 135mm – APSC 12 deg, FF 18 deg
  • 20mm – APSC 70 deg, FF 94 deg
  • 16mm Fisheye – APSC 110 deg, FF 180 deg
  • 70-200mm – APSC 23-8 deg, FF 34-12.30 deg
  • 18-250mm – APSC 76-6.30 deg, 1:34.5/0.29x
  • 18-55mm – APSC 76-29 deg
  • 18-70mm – APSC 76-23 deg
  • 16-105mm – APSC 83-? deg
  • 28-75mm – APSC 54-21 deg, FF 75-32 deg
  • Sigma 1.7x
  • 30mm – Sigma 45 deg,
  • 17-50mm – Sigma 72.4-27.9 deg, APSC ~31.62 deg
  • 8-16mm – Sigma 114.5-75.7 deg
  • 70-300mm Macro – Sigma 34.3-8.2 deg, 1:4
  • Nikon 1.5x
  • 50mm – FF 46 deg
  • 18-55mm – APSC 76-28.50 deg
• Target Lens

  • ---

  • Kit Lens
  • Konica Minolta DT AF 18-70mm/3.5-5.6 (D) Minolta Kit鏡

    18-70mm APS-C, F3.5-5.6, 23-77 deg, focus: 0.38m+, 0.25x, 235g, 55mm dia, $350-$500 2nd hand (Info from Manual)

  • Sony α SAL-1870/C AE 18-70mm f/3.5-5.6 Old Kit鏡

    18-70mm, F3.5-5.6, 23-76 deg, 235g, 55mm dia, ~$1600

    • Sony China on SAL1870

      35mm equiv: 27-105mm

      Angle of View on APS-C: 76-23 deg

  • Sony α SAL-1855/DT 18-55mm f/3.5-5.6 A550 Kit鏡

    18-55mm, F3.5-5.6, 28.5-76 deg, 210g, 55mm dia, ~$1600?

  • Nikon AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G D40 Kit鏡

    18-55mm, F3.5-5.6, 28.5-76 deg, 210g, 52mm dia, ~$800

  • ---

  • Standard Zoom Lens
  • Sony α 蔡司 SAL1680Z/AE 16-80mm f/3.5-4.5

    16-80mm, F3.5-4.5, 20-80 deg, focus: 0.35m+, 1:4.2, 440g, ~$4700 new, ~$3800 2nd hand (81%)

  • Sigma 18-50mm F2.8 EX DC MACRO HSM

    18-50mm, F2.8, 27.9-69.3 deg, focus: 0.2m+, 1:3, 535g, 72mm dia, ~$2500 2nd hand

  • Tamron SP AF 17-50 F/2.8 XR Di II LD Aspherical [IF] (A16)

    17-50mm, F2.8, 31-78 deg, focus: 0.27m+, 1:4.5, 398g, 67mm dia, $2800 new, ~$2200 2nd hand (78%), 5 year warranty, F2.8 not sharp/紫色淡

  • Canon EF 17-40mm f/4.0L USM

    17-40mm, F4.0L, 57.3-104 deg FF, focus: 0.28m+, 0.24x(1:4.2), 500g, ~$6000 new

  • ---

  • 定焦 Lens
  • Konica Minolta AF 50mm/1.4 (已停產)
  • Konica Minolta AF 50mm/1.7 (已停產)
  • SAL-30M28
    (hard to use as 1:1 Macro as need too close to object)
    30mm, F2.8, 50 deg, focus 0.129m+, 1.0x, 150g, 49mm dia, $1500 new, $1200 2nd hand (80%)
  • Sony α SAL-35F14G/AE 35mm f/1.4G (Same angle as Minolta 35mm F1.4G)

    35mm, F1.4, APS-C: 44 deg/FF 63 deg, focus 0.3m+, 0.21x(1:4.8), 55mm dia, ~$10500

    • Sony China page on 35F1.4G
  • Sony α SAL-35F18 APS-C only

    35mm, F1.8, 44 deg APS-C, focus: 0.23m+, 0.25x, 170g, 55mm dia, ~$1590?

    • Sony.lv page about SAL-35F18
    • Sony China page about SAL-35F18

      35mm equiv: 52.5mm

      Angle of View on APS-C: 44 deg

  • Sony α SAL-50F18/DT 50mm F1.8 SAM (maybe APSC = 75mm angle?)

    50mm, F1.8, 32 deg, focus: 0.34m+, 170g, 49mm dia, ~$1080 (2nd hand ~$8-900)

    • Sony China on SAL50F18

      35mm equiv: 75mm

      Angle of View on APS-C: 32 deg

  • Sony α SAL-50F14/C AE 50mm f/1.4

    50mm, F1.4, 32 deg APS-C/47 deg FF, focus: 0.45m+, 0.15x(1:6.7), 55mm dia, ~$2500-2300, ~$2000 2nd hand? (80%)

    • Sony China on SAL50F14

      35mm equiv: 75mm

      Angle of View on FF: 47 deg
      Angle of View on APS-C: 32 deg

  • Sigma 28mm F1.8 EX DG ASPHERICAL MACRO FF & APS-C

    28mm, F1.8, ~57 deg APS-C/75.4 deg FF, focus: 0.2m+, 1:2.9, 500g, new ~$3xxx, 2nd hand ~$2200

  • Sigma 30mm F1.4 EX DC HSM APS-C only

    30mm, F1.4, 45 deg APS-C, focus: 0.4m+, 1:10.4, 430g?!, 62mm dia with hood, HSM, new $3150, 2nd hand ~$2500-2800

    • Sigma 30mm official site

  • ---

  • Long Range Lens
  • F2.8
  • Tamron SP AF 70-200MM F/2.8 Di LD [IF] MACRO (Model A001)

    70-200mm, F2.8, Macro, 77mm dia, 1.15kg, ~$5500 new

  • normal
  • Sony α SAL-70300G/AE 70-300mm/4.5-5.6 G SSM

    70-300mm, F4.5-5.6G, 8.1-34 deg FF/ ~6-25 deg APS-C, focus: 1.2m+, 1:40, 760g, 62mm dia, ~$5200, 2nd hand ~$4500-

  • Sony α SAL18250/AE 18-250mm f/3.5-6.3

    18-250mm APS-C, F3.5-6.3, 6.3-76 deg, focus: 0.45m+, 0.29x, 440g, 62mm dia, ~$3320星際/$3400肥花 new, ~$2800 2nd hand(82%), list $3890

    • Sony α SAL-18250 (Official)
  • Tamron AF18-250mm F/3.5-6.3 Di II LD Aspherical [IF] Macro (A18) (Same as Sony SAL18250 except blades)

    18-250mm, F3.5-6.3, 6.3-76 deg, focus: 0.45m+, 0.29x, 430g, 62mm dia, ~$33xx? new 5yr, $2060 water new 1yr, $2000 2nd hand

  • Tamron AF 70-300mm F4-5.6 Di LD Macro 1:2 (A17)

    70-300mm, F4-5.6, 8.2-34.2 deg FF?, focus: 0.95m+, 1:2, 435g, 62mm dia, ~$1300 5 year warranty, 200打後成像差劣, 即使收左光圈至f11 都不能接受?

  • Sigma APO 70-300mm F4-5.6 DG MACRO

    70-300mm FF / 105-450mm APS-C, F4-5.6, 8.2-34.3 deg FF/~6-26 deg APS-C, focus: 0.95m+, 1:2, 550g, 58mm dia, Wing Shing $1780, 天祥賣$1250, (2nd hand ~$900-1000)

    • dchome.net: [開箱] Sigma 70-300mm F4 – 5.6 APO DG macro

  • ---

  • Other Lens
  • SAL-50M28
    (ok, but no SSM, very sharp even at F2.8)
    50mm, F2.8, 32 deg, focus 0.2m+, 1.0x, 295g, 55mm dia, list $3680
  • SAL-100M28

    100mm, F2.8, 16 deg, focus 0.35m+, 1.0x, 505g, 55mm dia, $?

  • Sigma 10-20mm F4-5.6 EX DC HSM 廣角鏡

    10-20mm, F4-5.6, 63.8-102.4 deg, 470g, 77mm dia, $3000-4600?

• Target Flash
  • A550 build-in: GN12 ISO100@18mm, recharge 4s

    (e.g. 2m x F6 @ISO100, 4m x F3 @ISO100, 4m x F6 @ISO200)

  • Sony HVL-F20AM

    GN20 ISO100@50mm, 27-50mm, AAA x2, 90g, ~$790 (guest ~28@105mm)

  • Sony HVL-F42AM

    GN42 ISO100@105mm, 24-105mm or 16mm w/adapter, V 105,-10 deg/H 180deg/LR 90deg, recharge 1-4s, AA x 4, 340g, MK $1680, 2nd hand $1000-$1200

  • Sony HVL-F58AM

    GN58 ISO100@105mm, 24-105mm or 16mm w/adapter, V 105,-10 deg/H 180deg/LR 90deg, recharge 0.1-5s, AA x 4, 440g, 2nd hand $1900, MK $2480, used coupon ~$23xx

  • Mobile01: 光的強度 – GN 值
  • Basics of Flash Photography

    Teach how to calculate GN value

Buy / Sell

• DCFever 二手買賣區
• dchome.net 二手買賣區
• Fix 鏡頭發霉

UV Filter / CPL 偏光鏡

• 尋找隱形衛士 14款UV/保護鏡對比評測

  UV Filter almost no effect on visible quality at enough light scenario

• Fever Share: 談談偏光鏡(CPL)用法
• DCFever: 【攝影技巧】偏光鏡用法話你知
• 想將CPL一直裝在鏡頭上像保護鏡一般長期不取下﹖

  換言之，一支最大光圈f2.8的鏡頭一裝上偏光鏡，立刻變成最大光圈f5.6的鏡頭!

Demo Photo

• sonydsr: Minolta 美樂達鏡頭 實拍貼圖
• sonydsr: SONY SAL-1870 實拍貼圖
• sonydsr: sony kit 18-70牛刀小試
• Alex’s Macau Travel, 18-70mm
• Alex’s Victoria Harbour Pano, 18-70 in 40mm
• Alex’s Cloud, 18-70mm
• Alex’s HK Airport interior, 18-70mm
• Alex’s HIT, 18-70mm

Panorama

• Photoshop build-in Photomerge function
• GigaPan Stitch Software (Can mix upto around 35-48 photo, 45000×10000 pixels)

高手

• Mikocokiki
  • Mikocokiki: Xanga
• HKAVMODE: 光圈先決下的世界
• 紅刺蝟 RED PORCUPINE / 婚紗攝影.婚禮紀錄.寫真

  D70 + 18-70 Kit鏡!