Sony a7R IVA vs Sony a6100

This is a full comparison between the cameras Sony a7R IVA and Sony a6100. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Sony.

Sony a7R IVA were released 2021 and Sony a6100 was released 2019. That is a 2 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Sony a7R IVA 2021
Sony a6100 2019

Type of camera

Both these cameras are Mirrorless cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Sony a7R IVA has a "Sony Full Frame"-sensor while Sony a6100 has a "Sony APS-C"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Sony a7R IVA 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Sony a6100 75 mm
Sony APS-C sensor
Crop factor/focal length multiplier by * 1.5

** 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

Sony a7R IVA has a 61 MP (Megapixels) resolution while Sony a6100 has 24 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Sony a7R IVA 61 MP
60217344 pixels
9504 x 6336
Sony a6100 24 MP
24000000 pixels
6000 x 4000

Sony a7R IVA has a 151 % larger resolution than Sony a6100. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Both of these cameras offer the exact same ISO range. They both have 100 to 32000.

Camera ISO Range
Sony a7R IVA 100-32000
Sony a6100 100-32000

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 a7R IVA
Lens compatibility chart for Sony a6100

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a7R IVA can shoot up to 10 pictures per seconds and Sony a6100 can shoot up to 11 pictures per seconds.

Camera FPS (Frames per second)
Sony a7R IVA 10
Sony a6100 11

Ability to record movies

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

In this case, both Sony a7R IVA and Sony a6100 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 a7R IVA weighs 665 gr (equal to 1.47 lb) which is 68% heavier than Sony a6100 and its 396 gr (or 0.87 lb).

Camera Weight
Sony a7R IVA 665 gr
1.47 lb
Sony a6100 396 gr
0.87 lb

Sony a7R IVA vs Sony a6100 Specs

Below you will find the complete and detailed technical specs for both Sony a7R IVA and Sony a6100, 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 a7R IVA
Sony a6100
Name Sony a7R IVA Sony a6100
Manufacturer Sony Sony
Release Date and Price
Sony a7R IVA
Sony a6100
Release Year 2021 2019
Release Date 2021-04-07 2019-08-28
MSRP 3499 USD 749 USD
Buy it today
Camera Type
Sony a7R IVA
Sony a6100
Camera Type Mirrorless Mirrorless
Sensor
Sony a7R IVA
Sony a6100
Sensor Size Full Frame (approx 36 x 24 mm) APS-C (approx 23.5 x 15.6 mm)
Sensor Type BSI-CMOS CMOS
Resolution 9504 x 6336 pixels 6000 x 4000 pixels
Megapixels 61 MP 24 MP
Image Processor BIONZ X Bionz X
Image
Sony a7R IVA
Sony a6100
ISO Range 100 - 32000 100 - 32000
White Balance Presets 9 10
Custom White Balance No Yes
Image Stabilization Yes
(Sensor-Shift)
No
Image Stabilization CIPA Rating 5.5 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Sony a7R IVA
Sony a6100
Autofocus Motor Yes Yes
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Focus Points 567 425
Lens Mount Sony E

See Compatible Lenses
Sony E

See Compatible Lenses
Focal Length Multiplier 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
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
Screen & Viewfinder
Sony a7R IVA
Sony a6100
Articulated LCD Tilting Tilting
Screen size 3” 3”
Screen dots 2360000 921600
Touch screen Yes Yes
Screen type TFT LCD TFT LCD
Live view Yes Yes
Viewfinder Type Electronic Electronic
Viewfinder Coverage 100% 100%
Viewfinder Magnification 0.78x 1.07× (0.71× 35mm equiv.)
Viewfinder Resolution 5760000 1440000
Photography features
Sony a7R IVA
Sony a6100
Frames per second 10 fps 11 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/8000 seconds 1/4000 seconds
Built-in Flash No Yes
Built-in Flash Range N/A 6 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Highlight Weighted
Spot
Average
Multi
Center Weighted
Spot
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Sony a7R IVA
Sony a6100
Video recording Yes Yes
Video format MPEG4
H.264
XAVC-S
MPEG4
H.264
XAVC-S
AVCHD
Video resolution 1920 x 1080
3840 x 2160
1920 x 1080
3840 x 2160
Built-in Microphone Yes Yes
Built-in Speakers Yes Yes
Storage
Sony a7R IVA
Sony a6100
Memory Card SD/SDHC
Memory Stick Pro Duo
SD/SDHC
Connectivity
Sony a7R IVA
Sony a6100
HDMI Output Yes Yes
Microphone Port Yes Yes
Headphone Port Yes No
Wireless Yes
Built-in (802.11ac + Bluetooth 4.1 + NFC)
Yes
Built-in (802.11b/g/n + NFC + Bluetooth)
Remote Control Yes (via smartphone) Yes (wireless or smartphone)
GPS No No
Body & Dimensions
Sony a7R IVA
Sony a6100
Enviromentally sealed Yes No
Battery Battery Pack Battery Pack
Battery Details NP-FZ100 lithium-ion battery & charger
NP-FW50 lithium-ion battery & charger
Battery Life (CIPA) 670 shots 420 shots
Width 129 mm 120 mm
Height 96 mm 67 mm
Depth 78 mm 59 mm
Weight 665 gram 396 gram