Ricoh Pentax K-3 23.35MP DSLR Camera vs Sony Alpha a7 24.3MP Digital Camera

  • Pentax K-3 23.35MP DSLR Camera được nhiều tín đồ công nghệ yêu thích nhờ chất lượng ảnh chụp cực tốt, chế độ quay video mượt mà, lấy nét nhanh, phù hợp với nhu cầu của nhiều người.

    Máy ảnh có kích thước 131.5 x 100 x 77.5 mm (xHxD), cùng với trọng lượng là 800 GM.

    Màn hình trên máy ảnh có kích thước 3.2 inch, rất thuận tiện cho việc xem lại ảnh và video trực tiếp qua màn hình của máy ảnh.

    Pentax K-3 23.35MP DSLR Camera được trang bị cảm biến CMOS với kích thước 36 x 24 mm, và rất nhiều tính năng khác như Usable Lenses Pentax KAF3, KAF2, KAF and KA K Mount, 35 mm Screwmount, 645 / 67 Med Format Lenses Useable with Adapter and Restrictions, SDM Function, Power Zoom Function.

    Ngoài ra, Pentax K-3 23.35MP DSLR Camera còn có nhiều chế độ chụp như Capture Modes Mode Selection Green, Hyper Program P, Sensitivity Priority Sv, Shutter Priority Tv, Aperture Priority Av, Shutter and Aperture Priority TAv, Metered Manual, Bulb, X-speed, USER 5 Presets, Custom Image Modes Bright, Natural, Portrait, Landscape, Vibrant, Radiant, Muted, Bleach Bypass, Reversal Film, Monochrome, Cross Processing, HDR Auto, HDR1, HDR2, HDR3, Exposure Bracket Value Adjustable, Automatic Composition Correction Function - All Include Gamut Radar and Fine Adjustment of Saturation, Hue, High / Low Key, Contrast, Sharpness Regular and Fine Adjustment Scales, Monochrome Mode Includes Adjustments for Filter Effects Green, Yellow, Orange, Red, Magenta, Blue, Cyan, Infrared, Toning Sepia, Warm, Cool, High / Low Key, Contrast and Sharpness Regular, Fine, Extra Sharp Adjustment Scales
  • Alpha a7 24.3MP Digital Camera được nhiều tín đồ công nghệ yêu thích nhờ chất lượng ảnh chụp cực tốt, chế độ quay video mượt mà, lấy nét nhanh, phù hợp với nhu cầu của nhiều người.

    Máy ảnh có kích thước 126.9 x 94.4 x 54.8 mm (xHxD), cùng với trọng lượng là 474 GM. Ống kính đi kèm với Alpha a7 24.3MP Digital Camera là E-mount, cho phép bạn chụp mọi hình ảnh với chất lượng vượt trội dù ở gần hay xa hay trong điều kiện ánh sáng yếu.

    Màn hình trên máy ảnh có kích thước 3 inch, rất thuận tiện cho việc xem lại ảnh và video trực tiếp qua màn hình của máy ảnh.

    Alpha a7 24.3MP Digital Camera được trang bị cảm biến CMOS với kích thước 35.8 x 23.9 mm.

Asterisk
mouse
Model
Pentax K-3 23.35MP DSLR Camera
Alpha a7 24.3MP Digital Camera
Giá Bán
21,060,000đ
28,118,844đ
Tên model
Pentax K-3
Alpha A7
Số hiệu model
k-3
-
Màu
Black
Black
SLR Variant
Body Only
-
Effective Pixels
23.35 MP
24.3 MP
Tripod Socket
Yes
-
Kích thước (WxHxD)
131.5 x 100 x 77.5 mm
126.9 x 94.4 x 54.8 mm
Cân nặng
800 GM
474 GM
Nhiệt độ
14 to 104
0 to 40
Loại cảm biến
Kích thước cảm biến
36 x 24 mm
35.8 x 23.9 mm
Maximum ISO
51200 ISO
25600 ISO
Lens Mount
-
E-mount
Compatible Lens
-
Sony E-mount lenses
Manual Focus
Yes
-
Dust Reduction
-
Yes
Other Lens Features
Usable Lenses Pentax KAF3, KAF2, KAF and KA K Mount, 35 mm Screwmount, 645 / 67 Med Format Lenses Useable with Adapter and Restrictions, SDM Function, Power Zoom Function
-
View Finder
Yes
Yes
View Finder Type
Pentaprism
XGA OLED, 1.3 cm 0.5 type electronic viewfinder colour
Viewfinder Coverage
100%
100%
Viewfinder Magnification
0.92x with 50 mm F1.4 at Infinity
Approx. 0.71 x with 50 mm lens at infinity, -1 m-1
Viewpoint Dioptric Adjustment
-2.5 to +1.5 m
-4.0 to +3.0 m -1
Viewfinder Eye Point
-
27 mm
Other Viewfinder Features
Standard Focusing Screen Natural-bright-matte III Interchangeable, Depth of Field Preview Optical Diaphragm Stop-down, Digital, Pentaprism Optical Viewfinder for 100% FOV and 0.95 Magnification
-
Focus Mode
AF Single with Focus Lock, Focus / Shutter Priority Selectable, AF Continuous with Focus / FPS Priority Selectable Manual
Fast Hybrid AFphase-detection AF/contrast-detection AF
Focus Range
-
EV 0 to EV 20 ISO100 equivalent with F2.8 lens attached
Auto Focus
Yes
Yes
Focus Points
SAFOX 11 TTL Phase-matching - 27 Point 25 Cross Type Focus Points in the Center
35 mm full frame 117 points phase-detection AF, APS-C 99 points phase-detection AF / 25 points conotrast-detection AF
Metering Modes
-
Multi-segment, Center-weighted, Spot
White Balancing
White Balance Auto WB, Multi Auto WB, Daylight, Shade, Cloudy, Fluorescent Light D Daylight Color, N Daylight White, W Cool White, L Warm White, Tungsten Light, Flash, CTE
Auto WB, Daylight, Shade, Cloudy, Incandescent, Fluorescent Warm White / Cool White / Day White / Daylight, Flash, Color Temperature 2500 to 9900K & Color Filter G7 to M7 15 steps, A7 to B7 15 steps, Custom / Underwater
Other Focus Features
Focus Point Adjustment Spot, Select, Expanded Area S, M, L, Zone Select, Auto 27 AF Points
Lock-on AF, Eye AF, Predictive control, Focus lock, Eye-start AF and AF micro adjustment both only available with optional LA-EA2 or LA-EA4 attached, AF illuminator built-in, LED type, range approx. 0.30-3 m, AF ON
Exposure Mode
-
AUTO iAUTO, Superior Auto, Programmed AE P, Aperture priority A, Shutter-speed priority S, Manual M, Scene Selection, Sweep Panorama, Movie
Exposure Compensation
1/3, 1/2 EV Steps +/- 5 EV
+/- 5.0EV1/3 EV, 1/2 EV steps selectable with exposure compensation dial +/- 3EV 1/3 EV steps
Other Exposure Features
Multi-exposure Composite Mode Additive / Average / Bright Number of Shots 2 to 2000 Images, Interval 2000 Shots, 2 sec to 24 hrs, Time Delay Available
-
Shutter Type
Electronically-controlled, Vertical-run, Focal-plane Shutter
Electronically controlled, vertical-traverse, focal-plane type
Shutter Speed
1/8000 - 30 sec 1/3 or 1/2 Steps, Bulb
Still images1/8000 to 30 sec, Bulb, Movies 1/8000 to 1/4 1/3 steps, NTSC up to 1/60 in AUTO mode up to 1/30 in Auto slow shutter mode, PAL up to 1/50 in AUTO mode up to 1/25 in Auto Slow Shutter mode
Self-timer
Yes
Yes
Continuous Shots
Continuous fps Continuous H 8.3 fps 60 JPG, 23 RAW, Continuous M 4.5 fps 100 JPG, 32 RAW, Continuous L 3.0 fps 200 JPG, 52 RAW
5fps in Speed Priority Continuous Shooting mode
Flash Compensation
1/2 Steps in -2 to 1 EV
3.0 EV switchable between 1/3 and 1/2 EV steps
Other Flash Features
Type Retractable P-TTL Pop-up Flash, Guide number 13 m ISO 100, Coverage 28 mm Wide-angle Equivalent 35 mm, External Flash Hotshoe P-TTL, High-speed Sync and Wireless with Pentax Dedicated Flash, X-sync Socket, Synchronization Speed 1/180 sec
-
Image Format
RAW PEF, DNG, JPG EXIF 2.30, DCF 2.0 Compliant
JPEG DCF Ver. 2.0, Exif Ver. 2.3, MPF baseline compliant, RAW Sony ARW 2.3 format
Live View Shooting
Yes
-
HDR Support
Yes
-
Loại màn hình
TFT LCD
TFT
Kích thước màn hình
3.2 inch
3 inch
LCD Display
TFT LCD
TFT
Other Display Features
Type TFT Color LCD with Brightness / Saturation / Color Adjustment AR Coating and Air-gapless Glass, Wide-angle Viewable Yes, Digital Filters Capture Extract Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome, Data Record Folder Name Standard, Date, File Name Standard, Customizable, Embed Copyright, Playback Modes Mode Selection Single Frame, Multi-image Display 6, 12, 20, 35, 80 Segmentation, Display Magnification Upto 16, 100% Display and Quick Magnification Available, Rotating, Histogram Y Histogram, RGB Histogram, Bright Area Warning, Auto Image Rotation, Detailed Info, Copyright Information Photographer, Copyright Holder, Folder Display, Calendar Filmstrip Display, Slide Show Mode Pallet Image Rotation, Digital Filter, Resize, Cropping, Slideshow, Save as Manual WB, RAW Development, Index Print, Protect, Movie Edit, Extract JPG from Movie, Magnification Upto 16X, Scrollable, Quick Magnification, Digital Filters Playback Base Parameter Adj, Extract Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome, Tone Expansion, Sketch, Water Color, Pastel, Posterization, Miniature, Soft, Starburst, Fish-eye, Slim
Graphic Display, Display All Info., No Disp. Info., Histogram, Digital Level Gauge, Shooting information for viewfinder mode
HDMI
Yes
-
Batteries Included
-
Yes
Microphone
Stereo
Built-in stereo microphone or ECM-CG50/XLR-K1M sold separately
Audio Features
-
AVCHD Dolby Digital AC-3 2ch, MP4 MPEG-4 AAC-LC 2ch
Độ phân giải video
Movie Full HD 1920 x 1080 60i / 50i / 30p / 25p / 24p, HD 1280 x 720 60p / 50p / 30p / 25p / 24p
-
Chất lượng video
Full HD
-
Video Format
Movie MPEG-4 AVC / H.264, MOV - JPEG AVI for Internal Movie Record
AVCHD format Ver. 2.0 compliant / MP4
Hỗ trợ HD
Yes
-
Chế độ chụp
Capture Modes Mode Selection Green, Hyper Program P, Sensitivity Priority Sv, Shutter Priority Tv, Aperture Priority Av, Shutter and Aperture Priority TAv, Metered Manual, Bulb, X-speed, USER 5 Presets, Custom Image Modes Bright, Natural, Portrait, Landscape, Vibrant, Radiant, Muted, Bleach Bypass, Reversal Film, Monochrome, Cross Processing, HDR Auto, HDR1, HDR2, HDR3, Exposure Bracket Value Adjustable, Automatic Composition Correction Function - All Include Gamut Radar and Fine Adjustment of Saturation, Hue, High / Low Key, Contrast, Sharpness Regular and Fine Adjustment Scales, Monochrome Mode Includes Adjustments for Filter Effects Green, Yellow, Orange, Red, Magenta, Blue, Cyan, Infrared, Toning Sepia, Warm, Cool, High / Low Key, Contrast and Sharpness Regular, Fine, Extra Sharp Adjustment Scales
-