Serene Life

by garik

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3

What it means is that whoever wrote the rules probably doesn't have a clue how JPEGs are rendered using most current image viewing applications. DPI (dots per inch) is a term that, when used properly, refers to printer hardware. PPI (pixels per inch) is the way we refer to how many pixels of a digital image should be rendered per inch when the image is ...


3

Assuming the photo is square (from the 36" x 36" max) It sounds like the largest photo they want is a 1200 x 1200 pixel image. You will need to compress your photo down to under 1200 x 1200 pixels and save it as a JPEG. The Dots Per Inch (DPI) is a way of telling the image viewing program the scale of each pixel. Some software programs allow you to view ...


0

For my camera, it lists the true megapixel number as the same as the actual megapixel number, so I don't think we should make too much of this number. The site also lists sensor size and pixel size. You can calculate the pixel size also by dividing the sensor area by the megapixel number. If you tak the square root of this number, you get the pixel size as ...


0

Simply you can process a 4mp image using photoshop and upscale it to 8mp image. Then there will be duplicated pixels , but theoretically it's an 8mp image now. I believe snapsort's "true resolution" means an image's actual pixel resolution without having such duplicated pixels.


0

A lot of the other answers made this unnecessarily complex and talked about things irrelevant to the OP, so let me try to be clearer: Many people think that a higher megapixel camera produces sharper photos. However, for a given sensor size, there's a limit on how many megapixels of actual information can be captured. Exceeding that limit doesn't help. If ...


6

Theoretically, most image formats could be downscaled progressively, without loading the entire image into memory, however I do not know any tools that really implement such feature, except for JPEG: it is special in that you can not only downscale without loading full resolution, but also downscale without decoding full resolution, thanks to the creative ...


7

You can also try using Picture Resizer on Windows (I love this tool) You simply drag and drop the picture on this simple EXE It is especially useful if you have many pictures to convert as you can do many at a time. All the config is done through the naming of the EXE which is brilliant IMO I have never tried it with huge file though.


25

I used ImageMagick on Ubuntu to resize those big pictures. convert -resize 10% source.jpg dest.jpg It took awhile, but worked with 1 GByte of RAM, the tool created a 4.7 Gbyte swap-like file for itself. More information is on AskUbuntu.


3

iResolution is just an edge enhancement filter. The "i" part in the name implies, like Panasonic's other "i" features, that the camera automatically controls when, and how much, it should apply this feature. What you select is just the maximum amount by which it will do that - it doesn't mean the camera will use it for every shot. Instead it will ...



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