Sony a5100 vs Sony a99

This is a full comparison between the cameras Sony a5100 and Sony a99. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Sony.

Type of camera

Sensors / crop factor

These cameras have different sensors. Sony a5100 has a "Sony APS-C"-sensor while Sony a99 has a "Sony Full Frame"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Sony)

Resolution

Both these cameras have the exact same resolution. Sony a5100 has a 24 MP (Megapixels) resolution while Sony a99 has 24 MP. If we break down this in more detail this is the data behind the numbers:

ISO range

Both of these cameras offer the exact same ISO range. They both have 100 to 25600.

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Sony a5100
Lens compatibility chart for Sony a99

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a5100 can shoot up to 6 pictures per seconds and Sony a99 can shoot up to 6 pictures per seconds.

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

In this case, both Sony a5100 and Sony a99 can shoot movies.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Sony a99 weighs 812 gr (equal to 1.79 lb) which is 187% heavier than Sony a5100 and its 283 gr (or 0.62 lb).

Sony a5100 vs Sony a99 Specs

Below you will find the complete and detailed technical specs for both Sony a5100 and Sony a99, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product	Sony a5100	Sony a99
Name	Sony a5100	Sony a99
Manufacturer	Sony	Sony
Release Date and Price	Sony a5100	Sony a99
Release Year	2014	2012
Release Date	2014-08-18	2012-09-12
MSRP	549 USD	2799 USD
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Camera Type	Sony a5100	Sony a99
Camera Type	Mirrorless	SLT
Sensor	Sony a5100	Sony a99
Sensor Size	APS-C (approx 23.5 x 15.6 mm)	Full Frame (approx 36 x 24 mm)
Sensor Type	CMOS	CMOS
Resolution	6000 x 4000 pixels	6000 x 4000 pixels
Megapixels	24 MP	24 MP
Image Processor	Bionz X	Bionz
Image	Sony a5100	Sony a99
ISO Range	100 - 25600	100 - 25600
White Balance Presets	10	8
Custom White Balance	Yes	Yes
Image Stabilization	No	Yes (Sensor-Shift)
Image Stabilization CIPA Rating	0 stops	0 stops
Uncompressed format	RAW	RAW
Optics & Focus	Sony a5100	Sony a99
Autofocus Motor	Yes	Yes
Autofocus	Contract Detect (sensor) Phase Detect Multi Area Center Selective Single Point Tracking Single Continuous Touch Face Detection LiveView	Phase Detect Multi Area Selective Single Point Tracking Single Continuous Face Detection LiveView
Focus Points	179	19
Lens Mount	Sony E See Compatible Lenses	Sony A See Compatible Lenses
Focal Length Multiplier	APS-C Sensor (1.5x) 1.5x multiplier Example: 24 mm becomes 36 mm 50 mm becomes 75 mm 100 mm becomes 150 mm 200 mm becomes 300 mm	Full frame No multiplier Example: 24 mm remains 24 mm 50 mm remains 50 mm 100 mm remains 100 mm 200 mm remains 200 mm
Screen & Viewfinder	Sony a5100	Sony a99
Articulated LCD	Tilting	Fully articulated
Screen size	3”	3”
Screen dots	921600	1229000
Touch screen	Yes	No
Screen type	TFT LCD	TFT Xtra Fine color LCD
Live view	Yes	Yes
Viewfinder Type	No Viewfinder	Electronic
Viewfinder Coverage		100%
Viewfinder Magnification		0.71×
Viewfinder Resolution	0	N/A
Photography features	Sony a5100	Sony a99
Frames per second	6 fps	6 fps
Minimum Shutter Speed	30 seconds	30 seconds
Maximum Shutter Speed	1/4000 seconds	1/8000 seconds
Built-in Flash	Yes	No
Built-in Flash Range	4 meters	N/A
External Flash	No	Yes
Self-Timer	Yes	Yes
Time-lapse	Yes	No
Metering modes	Multi Center Weighted Spot	Multi Center Weighted Spot
Exposure Compensation	+/- 3 (at 1/3 EV steps)	+/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features	Sony a5100	Sony a99
Video recording	Yes	Yes
Video format	MPEG4 XF-AVC AVCHD	MPEG4 H.264 AVCHD
Video resolution	1440 x 1080 1920 x 1080	1440 x 1080 1920 x 1080
Built-in Microphone	Yes	Yes
Built-in Speakers	Yes	Yes
Storage	Sony a5100	Sony a99
Memory Card	Memory Stick Pro Duo SD/SDHC	Memory Stick Pro Duo SD/SDHC
Connectivity	Sony a5100	Sony a99
HDMI Output	Yes	Yes
Microphone Port	No	No
Headphone Port	No	No
Wireless	Yes Built-in (802.11b/g/n with NFC)	No
Remote Control	Yes (wired or PC)	Yes (Wired or Wireless (Optional))
GPS	No	Yes Built-in
Body & Dimensions	Sony a5100	Sony a99
Enviromentally sealed	Yes	Yes
Battery	Battery Pack	Battery Pack
Battery Details	NP-FW50 lithium-ion battery and USB charger	Lithium-Ion NP-FM500H rechargeable battery & charger
Battery Life (CIPA)	400 shots	500 shots
Width	110 mm	147 mm
Height	63 mm	111 mm
Depth	36 mm	78 mm
Weight	283 gram	812 gram