silikonpubli.blogg.se - How to convert cr2 to jpeg in lightroom

From my observation it's mainly to keep "newbies" out. Some organisations post requirements like that under the guise of 'quality', though that's mainly bogus as (even now) few devices are capable of going beyond 8-bits per channel. Assuming that everyone shoots raw (and some people don't - and no, I've never understood doing that) organisers will often allow you to supply the original unmodified jpeg you based the entry on as actual entries are usually requested at a specific pixel dimension. More likely the requirement is there to discourage cheating, which has been rife in the amateur/competitive world. The requirement may be there because the competition is for unmodified images - this is common with photojournalism competitions where only blanket or minor changes are permitted. Theoretically it would be possible as compressed NEF is based on a TIFF container and a "wide" JPEG/JFIF variant IIRC.Īnd all is not lost as, having run these kinds of competitions, I can say that you may still be able to enter depending on what type of competition it is and why they want raw files. You cannot (should not) produce a raw from a jpeg. It is possible, if this is a local competition, that they've just copied the rule from somewhere else, so it might be worth getting in touch with them. This (if it's an option on your camera) may be an option in the future. I (as an amateur) almost always shoot RAW+JPEG, as many of my shots are just printed with at most a little cropping, but some need proper work. So you're probably out of luck this time. I've seen RAW+TIFF submission requirements explicitly for this reason. Having the RAW file gives them the ability to check how much you've modified the image.

Post-processing is part of the digital workflow, and the question is more one of how much is acceptable.

It's possible they want the as-shot image, though that's unlikely to be for display.

TIFF and other formats support high bit depth without lossy compression and are used for distribution of high-res images, so the only reason to have the RAW is that you shot the photo. This is to avoid cheating by submitting someone else's image.

Having the RAW file is often used as a proxy for having taken the photo, as RAWs aren't generally published.

Blown up to exhibtion size these can jump out and ruin a print.

JPG suffers from compression artefacts which RAW doesn't.

This is a time consuming process and it requires the knowledge and practice in this way the most of the pictures to take.In addition to the points Alex S made, you need to consider why they want RAW.

For example, shadows and light parties through processing of the RAW format this additional information to be highlighted with a photo editing program so that way in shadow and light by drawing lots more to see.ĭownside is that pictures taken in RAW format are stored much larger files and rework have to optimize them for printing. In practice, these extra colours are not visible to the human eye, but of course it means that information is lost.

In JPEG format, there are only 256 possible variations per colour channel. When saving a picture in JPEG format in the camera, the 12-bit information is converted to the 8 bits in a colour channel can have a JPEG file. This means that each of the Red, Green and Blue (RGB) 4096 variations can be saved. Most sensors can be 12-bits to store colour information per colour channel. Ok, are you sitting comfortably? We’ll explain… a RAW file is added to include information about camera settings.