Sony Cybershot DSC-F828 Review
Like all digital SLR's and more recently prosumer level digital cameras Sony has decided to provide a RAW format option on the DSC-F828. RAW simply means data direct from the sensor (in the case of the F828 14 bits per pixel) which hasn't been processed in any way. Additionally the current camera settings (such as parameters, exposure etc.) are recorded in the header of the RAW file. Sony uses the .SRF extension for RAW files.
As mentioned earlier it appears as though Sony are packing the RAW data to 16-bits per pixel, this makes the RAW files about 2 MB larger than they need to be.
RAW vs. JPEG: Resolution
Provided with the DSC-F828 is the Image Data Converter application for converting RAW files to JPEG or TIFF. As you can see the RAW conversion engine in Image Data Converter appears to be almost totally identical to that in the camera, output from IDC is almost pixel for pixel identical to the camera. With one exception, IDC appears to apply slightly harder sharpening and hence stronger 'white halo' sharpening artifacts can be seen around the black detail of the RAW image.
|RAW (saved as highest quality JPEG)||JPEG|
RAW Latitude (dynamic range)
The sequence of images below were created by applying a negative digital exposure compensation to a RAW file at levels of 0, -0.5, -1.0 and -2.0 EV. As you can see at -0.5 EV some detail is recovered from the overexposed areas of the image, at -1.0 EV a little more detail but also a darkening of previous highlight detail to an almost gray appearance. To conclude the F828 appears to have approximately 0.5 EV (half a stop) of RAW latitude above the clipping point of the 'normal' exposure in an average shot. Note that the images below have been half-sized (downsampled in Photoshop CS; 1632 x 1224) to reduce file size and bandwidth requirements.
|-0.5 EV digital exposure compensation|
|-1.0 EV digital exposure compensation|
|-2.0 digital exposure compensation|
In natural light (outdoors) the DSC-F828's white balance was good, although did have a very slight cyan cast (not as bad as we experienced with the DSC-V1). In incandescent and fluorescent light the camera exhibited a slight pinkish cast. As expected manual preset white balance was as perfect.
|Outdoors, Auto||Outdoors, Sunny, Cloudy||Outdoors, Manual|
|Incandescent, Auto||Incandescent, Incandescent||Incandescent, Manual|
|Fluorescent, Auto||Fluorescent, Fluorescent||Fluorescent, Manual|
In macro mode and at full wide angle the DSC-F828 can focus as close as 2 cm from the subject, this however leads to images with very high distortion and low corner softness. We then attempted various positions between wide and telephoto for the optimum frame coverage with minimum distortion / softness. This was harder than I had expected and so we ended up with two possibilities, one at 62 mm equiv. and one at 70 mm equiv. Neither of which are 'the answer' as such, and I had hoped for quite good macro performance without distortion from this lens.
The DSC-F828 delivered mixed flash test results. Firstly with our skin tone test (which I repeated a dozen times to verify) had a slight cyan cast and was slightly underexposed, the wall behind the hand should be pure white. Secondly against our color patches chart no obvious color cast and a fairly good exposure.
|Skin tone - Slight cyan color cast, moderate exposure (slightly underexposed but acceptable)||Color patches - Good color balance, no color cast, good exposure|
The DSC-F828 uses a dark frame subtraction noise reduction method for long exposures, the camera records a second shot with the shutter closed which is used to subtract fixed pattern 'hot pixel' noise from the main image. This means that if you shoot a ten second exposure the entire process will take twenty seconds. Overall the DSC-F828 performed fairly well with moderately long exposures (the samples below are ten seconds each). We did note visible noise as well as some remaining hot pixels and some 'black hole' marks from the noise reduction.
|Manual exposure, ISO 64, 10 sec, F5.0|
|Manual exposure, ISO 64, 10 sec, F8.0|
Barrel and Pincushion Distortion
Interestingly the DSC-F828 produced almost identical barrel distortion results as the only other 28 - 200 mm prosumer lens, that on Minolta's DiMAGE A1. As we would expect we measured over 1% barrel distortion at wide angle (this is a 28 mm equiv. focal length) and what is actually quite good pincushion distortion of around half a percent at telephoto (200 mm equiv.)
|Barrel Distortion, 1.2% @ wide angle||Pincushion Distortion, 0.4% @ telephoto|
Vignetting / Lens Shading
Our vignetting / lens shading test is very simple, a shot of a blank wall from two meters away, vignetting will always be most visible at wide angle and maximum aperture and will start to disappear at smaller apertures and/or further zoom. We did observe a very slight amount of lens shading at wide angle and telephoto on the DSC-F828, it's on the borderline of whether it would be actually visible in everyday shots.
|Slight lens shading at wide angle, F2.0||Slight lens shading at telephoto, F2.8|
|DSC_9643 by NOWHITELENS|
from Best Photo of the Week
|Thailand Sunrise by ozziebadger|
from Ships and Boats
Sigma is discounting 13 different high-performance 'Art' series lenses from today until November 30th. The company is calling it an 'unprecedented' sale.
See DJI's 'AeroScope' drone-tracking technology in action. This is the system that DJI says can help law enforcement and airport (among others) track and identify rogue drones.
iPhone X owners can already accessorize their new phone with high-quality smartphone photography lenses courtesy of Moment's new lineup.
Considering buying Sigma's exciting new 16mm F1.4 DC DN Contemporary lens for crop-sensor E-Mount and M43? Check out these official full-res samples first!
Vimeo has just added support for 8K HDR 10-bit content, making it possible to show up to 75% of the colors the human eye can perceive vs the usual 35%. Take THAT YouTube.
The holidays are coming, but your gear ain't fly? You gotta hit us up and read our treat yo' self guide.
We're counting down our top 10 most popular sample galleries of 2017, and sitting pretty at #5 is the Fujifilm X-T20.
See some of the most iconic black-and-white photographs throughout history brought to life by a community of colorization enthusiasts and professional retouchers in the new book Retrographic.
Shopping for a photographer? Whether you are one yourself or not, chances are you could use some ideas. From stocking stuffers on up, we've got some photography gift suggestions for every budget.
We're counting down our top 10 most popular sample galleries of 2017. Drum roll please... the #6 spot belongs to none other than the Sigma 85mm F1.4 DH HSM Art.
Read the story behind this gorgeous wedding photo captured at Trolltunga in Norway by husband and wife duo Priscila Valentina Photography. The 14 hour hike in the rain that preceded this shot was TOTALLY worth it.
Go behind the scenes with filmmaker Nick Arcivos, who recently created a beautiful cinematic short film in Paris using only the iPhone X, a couple of gimbals, and a few lights. The results are very impressive.
A Bay Area startup offering a pay-by-the-photo camera service cleverly addresses the pain points photographers experience when they pick up their first DSLR. But can it survive the smartphone?
It's been a big year for software innovations, dual cameras and huge displays. Take a look at our picks for the top smartphone cameras and why we think they stand out.
We're counting down our top 10 most popular sample galleries of 2017. At the #7 spot is the ready-for-any-weather Olympus Tough TG-5.
By combining his skills as a time-lapse filmmaker and an engineer, Julian Tryba created this out-of-this-world creative 'layer-lapse' of New York City that alternates between night and day in time with the music.
Canon Japan's new lineup of novelty camera-themed gifts was just revealed online, including a lens mug and lens thermos, two retro camera-themed USB drives, and a picnic mat.
The Profoto A1 most certainly isn’t for everyone [...] But for those who are used to using the Profoto systems, and want something that pairs seamlessly with the strobes you already have, there is no better companion.
Fujifilm has asked a US district court to clear it of any wrongdoing, after allegedly being threatened with trademark litigation by Polaroid.
While a couple of our reviewers are out testing the Sony a7R III in Arizona, back in Seattle we slapped the camera in front of our studio scene to get a close look at its image quality. See how it stacks up against the competition.
We're counting down our top 10 most popular sample galleries of 2017, and the #8 ranking belongs to the Nikon D7500.
B+W has announced a new aluminum filter holder that offers three slots so users can use multiple filters at the same time. The holder goes with the 2mm thick 100mm square filters it launched earlier this year.
8K video is coming a lot faster than you think, and Blackmagic is ready for it. Meet the DeckLink 8K Pro, a new high performance PCI-E capture and playback card built to handle 'real time high resolution 8K workflows.'
"Glass is everywhere in photography. From Eugène Atget’s reflective vitrines to Lee Friedlander’s sly self-portraiture, photographers have long been in thrall to the visual complications glass can inject into a composition."
Former Apple Aperture lead developer Nik Bhatt has designed an iOS app called RAW Power that lets you edit raw photos from your professional camera using your phone and tablet.... color us intrigued.
Advertising photographer Blair Bunting got his hands on the new Microsoft Surface Book 2, and it blew him away. Bye bye MacBook Pro...
The OnePlus 5T retains many of the 5's features and specs, but comes with an edge-to-edge display and a dual-camera that is optimized for low light.
Sony's recently announced IMX461 backside illuminated medium format sensor will bring 100MP resolution and almost 2x the speed to the next-gen Fuji GFX and Hasselblad X1D.
With the ‘Rent a Hasselblad’ camera equipment renting program, the camera makers is aiming to give enthusiast and professional photographers easier access to its medium-format photography products.
They say seeing is believing, and that's exactly what happened when one DPR staffer took the Google Pixel 2 out for an afternoon shooting under challenging conditions.