Sony SLT-A77 In-depth Review
The actual sensitivity of each indicated ISO is measured using the same shots as are used to measure ISO noise levels, we simply compare the exposure for each shot to the metered light level (using a calibrated Sekonic L-358), middle gray matched. We estimate the accuracy of these results to be +/- 1/6 EV (the margin of error given in the ISO specifications). We found that measured ISO from the Sony SLT-A77 is roughly 1/3 stop higher than indicated across the ISO range - so ISO 100 indicated = ISO 125 measured.
Noise and Noise Reduction (JPEG)At 100% on screen, noise is visible in JPEGs taken across the A77's entire range of ISO sensitivity settings if you look closely at areas of plain tone (like a blue sky for instance) but starts to become really noticeable at ISO 800 and above. Up to ISO 3200, the A77's noise-reduction system keeps things relatively smooth but above ISO 1600 you can clearly see that fine detail starts to suffer. In terms of detail reproduction at default settings there is quite a leap from ISO 800 to 1600 but this is only really apparent when images are viewed like this, critically, at 100% on screen. The noise graph, shown here, doesn't tell the whole story and it is clear that noise reduction is keeping measured noise levels low.
By ISO 16,000, even with noise reduction set to 'low' the medium-contrast detail in this test scene is all but obliterated. It is worth noting though that in 'real world' shooting at this setting, high-contrast scene elements are still relatively well-preserved, which makes images useable (just) for small prints and web use.
That said, the A77 is unequivacally a pretty noisy camera towards the upper end of its ISO sensitivity scale and if you plan on using the A77's highest ISO settings you should keep your expectations relatively modest.
RAW noise (ACR 6.6 Release Candidate, noise reduction set to zero)
The amount of NR applied 'under the hood' is not high, but it does vary by camera (Adobe is attempting to normalize output across different sensors), so we are still looking at a balance of noise and noise reduction, rather than pure noise levels. However, the use of the most popular third-party raw converter is intended to give a photographically relevant result, rather than simply comparing sensor performance in an abstract manner.
Converting the A77 images in Adobe Camera RAW 6.6 Beta confirms the suspicion that we had when examining the camera's JPEG output. The A77's 24MP sensor is producing significantly higher noise levels than the competition, especially towards the top of its ISO sensitivity range. At ISO 1600 and above the disparity is obvious, and becomes more so as the ISO sensitivity increases. Above ISO 12,800, chroma noise from the A77's raw output is very high indeed.
As always, you should keep in mind that this is a pixel-level judgement and these files contain a lot of pixels. In the real world, with judicious use of post-capture noise reduction you can get much more from the A77's raw output than you might expect from the images and graphs on this page. That said, we've found that at high ISO settings in poor light, it is hard to 'rescue' images taken at ISO 6400 and above, even with careful raw post-processing.
|Llyod's Building Elevators by Jonathan Shapiro|
from Your City - Elevators
|Fire Lake by bbadgett|
|Tail Fins...1961 Cadillac Sedan DeVille by J Warren|
from Car Shows 2018
The app's algorithms have been trained using using 200 million cropping data points from real photographers.
Thanks to a software update, the Loupedeck+ editing console can now be used for video editing.
British photographic engineer MTF Services is claiming the world’s first third-party lens adapters for the new Nikon Z system with a collection of four units designed to allow cinema lenses to be mounted on the mirrorless full frame bodies.
Think Tank Photo has updated its line of heavy-duty rain covers and introduced a new, compact version for emergency situations.
The X-T3 is our first opportunity to analyze what's likely to be Fujifilm's next generation image sensor. Take a look at how it performs next to the competition in our studio test scene.
Canon's new normal is seriously sharp wide open. After shooting with it for a few days, we've prepared a gallery of real-world sample images.
Nikon will cease offering Brazil-based customer service and technical support, though the company stresses that it will still offer technical assistance and warranty repairs for valid warranties.
Two years ago, CatLABS of JP announced a plan to save Packfilm from the dead. Now, it's announced it's giving up its efforts to better focus its resources elsewhere.
The GoPro Fusion is designed to make it easy to capture 360-degree video and stills. We took it out recently on a typically hot Seattle summer day to see what it can do.
We've got our hands on a full-production Nikon Z7 camera and have updated our gallery with additional samples.
A new Kickstarter campaign seeks funding for Chroma Chrono, a programmable RGB camera flash that emits multiple colors during long exposures.
Think Tank Photo has launched a new lineup of six dual-access, water-resistant protective lens cases it calls Lens Case Duo.
Canon and Nikon finally entered the full-frame mirrorless market this summer with the brand-new RF and Z mounts. Now that we've had some time with the cameras, we wanted to revisit our earlier predictions and take stock.
The devices' camera specs look pretty much identical to last year's iPhone X but under the hood a number of important improvements have been made.
Blackmagic Design has announced the public beta of its new Blackmagic RAW video codec. The company says the new format combines the benefits of shooting Raw video with the ease of use and smaller file sizes usually associated with non-Raw video files.
Serif, the company behind the Affinity suite, has announced the latest update for its mobile Photoshop competitor Affinity Photo for iPad.
The Atomos Ninja V external video recorder and monitor will be ready to ship at the end of this month. The 5.2in Ninja V is designed to provide a smaller option, while still offering many of the features of the larger 7-inch models.
Having shot with the camera, spoken to Canon and read the tea leaves, here's what DPR Technical Editor Richard Butler thinks the EOS R tells us about Canon and the RF's mount's future.
After last week's teaser, lighting manufacturer Profoto has announced its 'small big' new product. The B10 is designed to be used as studio flash head but in a very small body, and has a powerful continuous light source for videographers as well.
Konseen has launched Photo Studio, a new light box tent large enough to photograph people, as well as objects.
Seagate has introduced new high-capacity hard drives for Network Attached Storage (NAS) devices: the 14TB IronWolf and 14TB IronWolf Pro HDDs.
The case was first announced earlier this year as a Kickstarter campaign and comes with a range of features aimed at iPhone photographers.
Manfrotto has introduced a new two-in-one tripod to its Befree lineup. Called the Befree 2N1, this new addition is both a tripod and monopod in one and is available with both of Manfrotto's locking mechanisms.
This new high dynamic range editing software comes with an AI-powered Quantum HDR Engine for improved photo merging.
Apple has unveiled the next generation of its iPhone X in the form of three variants: the 5.8" iPhone XS and 6.5" iPhone XS Max with OLED screens, and the 6.1" iPhone XR with an LCD and single rear camera.
Ahead of the launch of the CamRanger II the company has announced a mini version of its wireless remote control system that it says has a longer range than the original in a body half the size.
Lens manufacturer Sigma has announced a trio of fast cinema lenses for full-frame camera systems, that it says will also be available in the future in the LPL mount for Arri’s large format camera system.
LumaPod is a a new tripod being funded on Kickstarter that takes just four seconds to set up and uses patented tension technology to keep your shots steady in a compact design.
X-Rite ColorChecker Video XL is an oversized color target for wide-angle, long distance, and aerial shooting.