tiff file viewer
when i insert tiff file to container field, it shows "tiff viewer require to see"
what should i install?
what should i install?
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JPEG is a lossy format but if you stay within the low compression factors (quality > 8 in photoshop), it still has a very acceptable result, and only a professional eye can see the difference, and still reduce the file size by at lest 3 or 4 times, something PNG can't on camera images.
PNG handles a transparent colour, which is handy for web pages where cutout paths are not usable.
It is always better than GIFs (better colour palette) but does not handle animation, but few people use this nowadays, they use flash things instead.
The biggest advantage of PNG in filemaker is that it is the only format where the transparent colour is recognized by filemaker on both mac and pc, while gif's transparencies were only shown on macs.
And back to tiffs, which seems to be a weird format to younters, it has its roots in image recording devices among which the scanners were the first; back in those days, machines had low memory and slow CPUS, so on the fly compression was impossible; on top a format which would be written to disk sequentially with small a small buffer were praised; this explains why some tiffs are pixel interleaved (good for scanners which supply all colours at the same time), some others line interleave (good to expose a CMYK colour separation), and why the run lenght compression was the favourite compression: it can be uncompressed by hardware very simply in real time.
PNG handles a transparent colour, which is handy for web pages where cutout paths are not usable.
It is always better than GIFs (better colour palette) but does not handle animation, but few people use this nowadays, they use flash things instead.
The biggest advantage of PNG in filemaker is that it is the only format where the transparent colour is recognized by filemaker on both mac and pc, while gif's transparencies were only shown on macs.
And back to tiffs, which seems to be a weird format to younters, it has its roots in image recording devices among which the scanners were the first; back in those days, machines had low memory and slow CPUS, so on the fly compression was impossible; on top a format which would be written to disk sequentially with small a small buffer were praised; this explains why some tiffs are pixel interleaved (good for scanners which supply all colours at the same time), some others line interleave (good to expose a CMYK colour separation), and why the run lenght compression was the favourite compression: it can be uncompressed by hardware very simply in real time.
>it still has a very acceptable result, and only a professional eye can see the difference...
In general I agree, but there are three exceptions.
First, if you are going to make additional changes to the image later on and re-save it, you need to work from a lossless original. Repeatedly changing and resaving a JPEG will degrade the image even at the highest quality settings. (Also, some graphics transforms (adjusting levels, gamma correction, etc) will actually make the artifacting "Stand out." The "Equalize" adjustment in Photoshop is an excellent way to demonstrate this.)
Second, if you're doing digitally rendered graphics, or other graphics which include large areas of perfectly smooth gradients (such as ray tracing, CAD rendering, etc) the artifacting is very noticeable.
Third, if you're going to use the images for a purpose where software will be interpreting the image in some way, such as OMR, watermarking, pattern recognition, biometrics, etc, even minor artifacting can really shift the output.
If you're not doing any of these things, then JPEG should be fine.
In general I agree, but there are three exceptions.
First, if you are going to make additional changes to the image later on and re-save it, you need to work from a lossless original. Repeatedly changing and resaving a JPEG will degrade the image even at the highest quality settings. (Also, some graphics transforms (adjusting levels, gamma correction, etc) will actually make the artifacting "Stand out." The "Equalize" adjustment in Photoshop is an excellent way to demonstrate this.)
Second, if you're doing digitally rendered graphics, or other graphics which include large areas of perfectly smooth gradients (such as ray tracing, CAD rendering, etc) the artifacting is very noticeable.
Third, if you're going to use the images for a purpose where software will be interpreting the image in some way, such as OMR, watermarking, pattern recognition, biometrics, etc, even minor artifacting can really shift the output.
If you're not doing any of these things, then JPEG should be fine.
I agree with that but it is a concern for so few people that I don't mind anymore, I don't even use an eyeloop anymore when I throw a glance at a document!
Working with TIFFs can be a pain, especially going across platforms, but sometimes you don't have a choice (as some OCR, fax software, scanners, etc require it.
JPEG is good for photographic images, but it is a lossy format. Converting a TIFF to a JPG will result in permanent loss of some of the image information. For general photos, web graphics, etc this doesn't matter, but it can be a serious issue with some kinds of software. If the images need to be modified later on, you should avoid JPEG format, and stay with a lossless format.
I suggest PNG as an alternative to TIFF. It's a flexible format intended to be the "next generation" GIF. It supports transparency, interleaving, and color levels ranging from 1-bit up to 48-bit, which is way more than most folks need. It's a lossless format, so is much better than JPG for graphics that may need to be modified in the future. It's also a much more consistent file format than TIFF (which comes in a million varieties, some of which are very strange) and it's supported by all current browsers, and most graphics programs.