Canon PowerShot Pro90 IS Review
JPEG/TIFF Image Size & Quality
The Pro90 features ten different resolution / size combinations. In RAW mode you shoot only at 1856 x 1392, in JPEG you can choose from compression settings of Super-Fine, Fine and Normal at sizes 1856 x 1392, 1024 x 768 or 640 x 480.
|Standard Test Scene|
To give an impression of what each combination of image size and quality produces the table below is a cross reference of image size against quality with an original image available for each, all images were shot within seconds of each other of the same subject. We've resaved the RAW shot as a TIFF for the purists out there who want to see what a RAW file would look like up-close, we have made the original RAW file (.CRW and .THM) available if you wish to manipulate the RAW file (you can use the downloadable G1 or D30 TWAIN modules they appear to work fine with these RAW files).
Sections below are 200% magnified crop of a 240 x 100 area of the image.
|1856 x 1392|
Acquired and saved as 8-bit TIFF (4,686 KB) / CRW
|1024 x 768|
|640 x 480|
Difference between Super-Fine JPEG and RAW? If you simply import the RAW files as is (using the camera settings) it'll be extremely difficult to see any difference between Canon's excellent Super-Fine JPEG (very light compression) and RAW. However, RAW provides lots of flexibility you can't get out of JPEG, you can alter the white balance, contrast, sharpening or saturation settings before importing, something impossible with JPEG. That's because the RAW files are simply that, raw data which has come directly from the camera's imager (CCD) before any in-camera processing has taken place, this can be seen as the true "digital negative".
For more information on RAW files read the page I wrote for the G1 review (everything written there applies to the Pro90's RAW files).
ISO (Sensitivity) Adjustment
ISO equivalence on a digital camera is the ability to increase the sensitivity of the CCD to allow for faster shutter speeds and/or better performance in low light. The way this works in a digital camera is by "turning up the volume" on the CCD's signal amplifiers, nothing is without its price however and doing so also amplifies any noise that may be present and often affects colour saturation.
As with the G1 the Pro90 offers a cleaner, slow ISO of 50, it obviously requires well lit situations and enables the use of large apertures (small F number) in even very brightly lit situations. Below are crops from four samples, in order ISO 50, 100, 200 and 400.
|ISO 50, 1/10s, F2.8|
|ISO 100, 1/20s, F2.8|
|ISO 200, 1/40s, F2.8|
|ISO 400, 1/50s, F3.5|
As we saw on the G1 there's a progressive (expected) increase in visible noise from about ISO 100 upwards, ISO 50 being very clean (but only useful in good light). I'd say there seems to be a little more noise at ISO 400 than on the G1. If you use AUTO ISO the camera will automatically choose either ISO 50 or ISO 100 depending on available light.
|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
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.
ExperimentalOptics has launched a Kickstarter campaign to fund its second lens design, a 35mm F2.7 lens it claims is the world's 'smallest fastest pancake lens.'
The new XF 8-16mm F2.8 R LM WR and XF 200mm F2 R LM OIS WR are aimed at enthusiasts and professionals, and add considerable versatility to Fujifilm's growing XF lens lineup. We've been taking a look.
The Getty family is working to regain control of stock photo agency Getty Images, according to multiple reports published late last week.
The Phoneslinger line, a modular bag system for mobile photographers, has been launched on the Indiegogo crowdfunding platform.
CamRanger has announced the impending arrival of its CamRanger 2 wireless tethering and trigger system, complete with redesigned apps, updated wireless features, and support for select Sony and Fujifilm systems.
As well as high-resolution stills, the new Nikon Z7 also shoots 4K video and 120p HD video. We recently spent two days with director Chris Hershman, shooting a music video on the Z7 for pop artist Emily Blue.