JPEG/TIFF Image Size & Quality
The DC4800 offers six different image size / quality combinations. Refered to on the selection menu by their megapixel size they relate to:
|Name||Image Quality||Image Size|
|3.1MP Uncompr.||TIFF Uncompressed||2160 x 1440|
|3.1MP||JPEG 5:1||2160 x 1440|
|3.1MP High Comp.||JPEG 10:1||2160 x 1440|
|2.2MP||JPEG 5:1||1800 x 1200|
|1.6MP||JPEG 5:1||1536 x 1024|
|0.8MP||JPEG 5:1||1080 x 720|
|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. Please only
download the TIFF image if you feel you really have to, otherwise you're
wasting yours and our bandwidth.
Images below are 200% cropped 240 x 120 area of the image.
|2160 x 1440 (3.1MP)|
|1800 x 1200 (2.2MP)|
|1536 x 1024 (1.6MP)|
|1080 x 720 (0.8MP)|
The CFA and noise artifacts visible in these images are here and plain to see even in the TIFF image, it's difficult to justify wasting storage space on a 9 MB image when it's no better than its 705 KB JPEG equivalent. A relatively good selection of resolution modes which would be easy to understand for a beginner.
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.
The DC4800 offers an Auto mode which will select an ISO sensitivity depending on the available light (tends towards ISO 200 most of the time), you can also manually select ISO 100, 200 or 400 equivalent sensitivity. Crops below are magnified 200%.
|ISO 100, 1/13s, F5.6|
|ISO 200, 1/25s, F5.6|
|ISO 400, 1/50s, F5.6|
A fairly good performance, with the DC4800 there's some visible noise even at ISO 100, this increases (as we'd expect) with each hike in sensitivity, ISO 200 seems usable for small prints or web sized reductions, ISO 400 could be used at a push.
|Iconic Tree by Jerry-astro|
from Fall colors
|USA1053a by embie|
from We salute you!
|Pot of Gold by Take5|
from Flower center
|Zombie DP by MarioSS|
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.
We're counting down our top 10 most popular sample galleries of 2017. At the #9 spot we have the Fujifilm GFX 50S, a medium-format camera that took CP+ 2017 by storm.
Instagram is testing a new feature that lets you follow hashtags in addition to people, making it possible to keep track of your favorite #landscapes or #portraits without leaving your home feed.
Despite the gigantic volume of second hand film bodies in existence, it seems there is still a demand for new 35mm SLRs with a retro feel. The latest is a remake of the Ihagee Elbaflex from the 1960s, but with a Nikon F mount.
The Polaroid Insta-Share Moto Mod straps an instant printer directly to your Moto Z smartphone, so you can print your photos as soon as you've captured them.
The Mitakon Speedmaster 135mm F1.4 lens is being relaunched in 7 different mounts, including: Sony A, Sony E, Canon EF, Nikon F, Fujifilm G, Pentax K, and Leica L. Got an extra three grand lying around?
In January, Kodak announced it would bring back the beloved slide film Ektachrome. The timeline has been pushed back a bit, but Kodak says you can expect to purchase Ektachrome again in 2018.
Instagram popularity is threatening some of the most beautiful landscapes in the US, as hordes of 'nature lovers' trample over the same spots over and over again in search of the same exact shot.
You’d have to be pretty brave to immerse your $50K RED cinema camera underwater. But if you've got the guts, Gates just released a new housing you can be pretty sure won't wreck your unbelievably expensive toy.
Adobe has released a 'Lightroom Downloader' app for Windows 10 and macOS High Sierra that allows you to download all of your images from the Adobe Cloud, all at once.
After releasing a popular 4K action cam and an affordable mirrorless M43 camera, Chinese camera maker YI is diving into yet another market: 360° VR. Meet the YI 360 VR: a powerful little two-lens camera that can shoot and stream in 4K.
The DJI Spark has received a lot of attention thanks to its diminutive size, but how does it stack up? In our review, we take a look at what it's like to fly this pint-sized drone, as well as what's in it for photographers.
Between now and the end of the year we'll be counting down our top 10 most popular sample galleries of 2017. Coming in at #10 is a fast wide prime and part of the highly-acclaimed Sigma Art series.
DxOMark has awarded the Pentax 645Z 101 points, making it the second-highest scoring medium format camera it's tested (or the highest scoring from 2015 to now, based on the originally published results).
A small explosion that sounded like a gunshot caused a panic and 24 flight cancellations at Orlando International Airport last Friday. As it turns out, it was a camera battery that exploded inside a traveler's bag.
At last, a premium superzoom bridge camera with phase detect autofocus. Is this the best all-in-one camera ever made? Read on.
Unlike most smartphone cameras, the new Google Pixel 2 devices combine optical and electronic image stabilization for a smooth video experience. Here's how it works.
It might be tempting to skimp on a wedding photographer and 'crowdsource' your wedding photos instead. But as this couple found out, you could end up with no photos and a big headache.