Sony A7R IV Review

September 23, 2019 | Mark Goldstein |

Sony A7R IV Image Quality

All of the sample images in this review were taken using the 61 megapixel Fine JPEG setting, which gives an average image size of around 20Mb.

The Sony A7R IV has an extensive and very usable ISO range of 50-102,400. ISO 50-6400 is virtually noise-free, while ISO 12800 and 25600 produce more than acceptable results, and even ISO 51200 and 102400 are OK for emergency use.

The RAW samples illustrate just how much processing the camera does by default, as they're much noisier at all ISO values than their JPEG counterparts, wither fewer unwanted colour artifacts.

The night photograph was excellent, with the maximum shutter speed of 30 seconds and the Bulb mode offering lots of scope for creative night photography.

The upgraded Pixel Shift Multi Shot mode alllows you to combine four images into one image with more detail or 16 images into one super-resolution photo using the Sony Imaging Edge software, although it doesn't work for moving subjects at all.

The Dynamic Range Optimizer function extracts more detail from the shadow and highlight areas in an image, without introducing any unwanted noise or other artifacts.

The various Picture Effects quickly produce special looks that would otherwise require you to spend a lot of time in the digital darkroom, while the Creative Styles provide a quick and easy way to tweak the camera's JPEG images.

Noise

There are 12 ISO settings available on the Sony A7R IV. Here are some 100% crops which show the noise levels for each ISO setting for both JPEG and RAW formats.

JPEG RAW

ISO 50 (100% Crop)

ISO 50 (100% Crop)

iso50.jpg iso50raw.jpg

ISO 64 (100% Crop)

ISO 64 (100% Crop)

iso64.jpg iso64raw.jpg

ISO 80 (100% Crop)

ISO 80 (100% Crop)

iso80.jpg iso80raw.jpg

ISO 100 (100% Crop)

ISO 100 (100% Crop)

iso100.jpg iso100raw.jpg

ISO 200 (100% Crop)

ISO 200 (100% Crop)

iso200.jpg iso200raw.jpg

ISO 400 (100% Crop)

ISO 400 (100% Crop)

iso400.jpg iso400raw.jpg

ISO 800 (100% Crop)

ISO 800 (100% Crop)

iso800.jpg iso800raw.jpg

ISO 1600 (100% Crop)

ISO 1600 (100% Crop)

iso1600.jpg iso1600raw.jpg

ISO 3200 (100% Crop)

ISO 3200 (100% Crop)

iso3200.jpg iso3200raw.jpg

ISO 6400 (100% Crop)

ISO 6400 (100% Crop)

iso6400.jpg iso6400raw.jpg

ISO 12800 (100% Crop)

ISO 12800 (100% Crop)

iso12800.jpg iso12800raw.jpg

ISO 25600 (100% Crop)

ISO 25600 (100% Crop)

iso25600.jpg iso25600raw.jpg

ISO 51200 (100% Crop)

ISO 51200 (100% Crop)

iso51200.jpg iso51200raw.jpg

ISO 102400 (100% Crop)

ISO 102400 (100% Crop)

iso102400.jpg iso102400raw.jpg

File Quality

The Sony A7R IV has 3 different image quality settings available, with Extra Fine being the highest quality option. Here are some 100% crops which show the quality of the various options, with the file size shown in brackets.

Extra Fine (29.8Mb) (100% Crop) Fine (16.1Mb) (100% Crop)
quality_extrafine.jpg quality_fine.jpg
Standard (10.6Mb) (100% Crop) RAW (117Mb) (100% Crop)
quality_standard.jpg quality_raw.jpg

Night

The Sony A7R IV's maximum shutter speed is 30 seconds and there's also a Bulb mode for even longer exposures, which is excellent news if you're seriously interested in night photography.

Night

night.jpg

Pixel Shift Multi Shoot

In the Pixel Shift Multi Shooting mode, the A7R IV shoots either 4 or 16 uncompressed RAW images whilst shifting the image sensor either one pixel or a 1/4 of a pixel at a time. You can then generate images with a higher resolution than is possible with regular shooting by combining the RAW images on a computer using the Imaging Edge (Remote/Viewer/Edit) application.

Off (9504x6336 pixels)

pixel_shift_01.jpg

On - 4 Shots (9504x6336 pixels)

pixel_shift_01a.jpg

On - 16 Shots (19008x12672 pixels)

pixel_shift_01b.jpg

Off (9504x6336 pixels)

pixel_shift_02.jpg

On - 4 Shots (9504x6336 pixels)

pixel_shift_02a.jpg

On - 16 Shots (19008x12672 pixels)

pixel_shift_02b.jpg

Image Stabilisation

The Sony A7R IV features built-in 5-axis optical image stabilization worth up to 5.5 shutter speed stops, depending on your hand-holding technique.

Off

On

antishake1.jpg antishake2.jpg
antishake3.jpg antishake4.jpg

Dynamic Range Optimizer

D-Range Optimiser (DRO) is Sony's solution to improve shadow detail in photos taken in contrasty light. There are 5 different levels and an Auto option.

Off

drange_01.jpg
Auto
drange_02.jpg
Level 1
drange_03.jpg
Level 2
drange_04.jpg
Level 3
drange_05.jpg
Level 4
drange_06.jpg
Level 5
drange_07.jpg

Creative Styles

There are 13 Creative Style preset effects that you can use to change the look of your images. Note that these can be chosen when the File Format is set to either Raw and/or JPEG.

Standard

Vivid

creative_style_01.jpg creative_style_02.jpg

Neutral

Clear

creative_style_03.jpg creative_style_04.jpg

Deep

Light

creative_style_05.jpg creative_style_06.jpg

Portrait

Landscape

creative_style_07.jpg creative_style_08.jpg

Sunset

Night Scene

creative_style_09.jpg creative_style_10.jpg

Autumn Leaves

Black & White

creative_style_11.jpg creative_style_12.jpg

Sepia

creative_style_13.jpg

Picture Effects

The Sony A7R IV offers a range of seven creative Picture Effects. Note that these can only be chosen when the File Format is set to JPEG.

Off

Toy Camera

picture_effect_01.jpg picture_effect_02.jpg

Pop Color

Posterization

picture_effect_03.jpg picture_effect_04.jpg

Retro Photo

Soft High-key

picture_effect_05.jpg picture_effect_06.jpg

Partial Color (Red)

High Contrast Mono

picture_effect_07.jpg picture_effect_08.jpg