Sunset in Kruger

by MrFrench

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Tag Info

New answers tagged

2

The difference in DR between the A7R and D810 is due to a new iteration of the sensor design which has a lower minimum hardware ISO setting, nothing to do with RAW compression. ARW compression first maps the linear 14-bit image into a non-linear 11-bit space. This does not compromise dynamic range as more bits are allocated to the shadows than the ...


2

File size is one good reason. My 5DII spits out raw files at around 24MB each and when converted to 16Bit TIFFs they weigh in at around 126MB, uncompressed. With compression they can still hit around 70MB which isn't as memory card friendly as the initial 24MB. Your question mentions .PNG files - the uncompressed 16Bit .PNG equivalent is still 115MB so ...


5

Wouldn't it be useful to have a 24-bit RGB format (taking advantae of the camera's automatic processing modes)? Not really. Raw files are actually very space efficient, since they only store one greyscale channel, in 12 or 14 bit per pixel. A lossless 24bit format will inevitably create larger files, while dropping 4 or 6 bits of dynamic range. A 48bit ...


6

The JPEG format is very good for final output, filesizes are small and with the highest quality settings artifacts are pretty much invisible. It's only if you start editing a JPEG that you will see artifacts and the limited dynamic range. So it's a bad format if you plan to later edit images. If you plan to later edit images than RAW is far better than ...


4

Some do — for example, most or all Pentax models and higher-end Nikons support TIFF (which, as Raheel Khan notes in a comment above, is better for metadata than PNG). So, there you go. If this is important to you, you can choose a camera which has it. However, it seems that it's not important enough to most consumers to make it something people decide on — I ...


0

A camera is part of a system; So lets look at that system. I'm going to make generalisations and some assumptions - don't get upset if they're wrong. Since you are looking at a D5300 it gives a good indication that your budget is relatively low. You're not really going to be using jpeg, so we're looking to see if there's enough value in the uncompressed ...


3

The particular lossy compression used here is nothing to worry about. Here's why. Camera sensors are more or less linear devices, if you double the amount of light you double the signal produced by the sensor. Our eyes work logarithmically, so if you double the amount of light, it appears much less than twice as bright. Another example of this is if you ...


2

Even with lossy compression the NEF file still contains a lot more information than a JPEG file. There is considerably more data per pixel in the NEF file. Even if the 14 bits color depth is reduced somewhat by the compression, it's still way more than the 8 bits of a JPEG image. You won't see much difference between the JPEG and the NEF in a direct ...


0

If you do no editing, such as adjusting light curves, color balance, white point, sharpening, etc. prior to converting to TIFF or JPEG, then the only difference between the finished files will be whether you allowed the automated routines in the camera make the decisions (JPEG) or the preset/automated routines in your conversion software application make the ...


-1

14-bit tiffs use more 1s and 0s per pixel than jpegs by a ratio of 16384 to 256. Raw files store a little more data in the highlights and the shadows of an image, allowing you to better recover shadows or highlights. When your camera takes a jpeg, it will perform edits on that picture, such as white balance and sharpening changes. If you were to edit one ...



Top 50 recent answers are included