Question about Pentax *ist D Digital Camera

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Problem with JPEG compression?

I have the camera set for 3 stars and "L", which is the highest resolution jpeg with 1:3 compression. I have a 256mb sandisk CF card---the camera's display shows 57 pics can be taken at this resolution and compression. When I start taking pics, the card remains at 57 or goes down as the pics are being taken, then goes back up. I took 156 pics on the card at this setting. My files are between 1.1 and 2.0 mb, which sounds more like 1:12 compression. Anyone know what is going on?

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Re: Problem with JPEG compression?

Think what is happening is that Pentax is not using the maximum JPEG quality value for their high quality setting. I re-saved an image in Photoshop last night, and the JPEG quality value was set to 9. I increased it to 12, and ended up with a 3.5 MB file.

Posted on Sep 08, 2005

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My image quality setting is at the highest JPEG level but am still only getting file sizes at 3.2 or smaller.


Go to Image>Image Size, make sure there is no tick in "Resample Image" and change the resolution from 72 to 300 pixels per inch.

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How to choose camera are best for wedding photography?


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What does raw+fine pictures mean?


The raw+fine setting indicates that your camera will take both raw (NEF) and high resolution JPEG pictures with every shot. You can change this to shoot just JPEG or just raw shots using your menu under the little camera icon. Click on image quality and it will give you multiple settings so you can choose only raw or only JPEG. You have three JPEG settings: fine, normal or basic.


I always shoot raw+fine which I think may be the default setting. I use the jpeg pictures for simple and quick editing and I use raw for detailed editing. JPEG pictures deteriorate quickly during editing while raw pictures can handle extensive editing without significant deterioration.

When you shoot raw+fine, it means the camera is actually storing two pictures of the same shot, one in each of the two formats. When you view the pictures in Windows, you can tell the difference between the raw shots and the jpeg shots because the raw shots have a broad black bar across the top and bottom of the picture while the jpeg shots fill the screen.

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A list and defintion of the file types raw b, raw, fine, norm and basic


The D3000 can store still images in two different formats. JPEG is a standard format, recognized by just about every image viewer and image manipulation program in the world. RAW is actually NEF (Nikon Electronic Format), a Nikon-proprietary format which incorporates almost all of the data captured by the sensor, without the processing of JPEG. JPEG files have the color balance, sharpening, contrast, and all the other camera settings done on the picture. With RAW files, you can change any or all of them and produce new JPEGs. In this respect the RAW file is similar to the original negative you get from processed film, while the JPEG file is like the final print. RAW files need special software for viewing and editing.

All JPEG files are compressed to save space. FINE, NORM, and BASIC represent different levels of compression. FINE does the least compression and takes up the most space, BASIC does the most compression and takes up the least space. Compression always loses some quality, so in general the less the compression the better the quality.

RAW+B simply stores each of your pictures as a RAW file and a BASIC JPEG file.

Having said all that, you should use only RAW or FINE settings. You didn't buy a SLR only to throw away picture quality, did you?

Oct 25, 2010 | Nikon D3000 Digital Camera

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How do I set dpi on canon 50d digital slr to the highest resolutioin?


You'll need to shoot RAW. Then in the conversion from RAW to TIFF or JPEG you can specify the DPI. You can do this in Photoshop or in Digital Photo Professional that probably came with your camera.

DPI and Pixel Resolutions are in two different realms, though somewhat related, they are independant. Your camera produces files at the maximum resolution of 4272 x 2848. At 72 dpi, your print will roughly be 60"x40". At 300 dpi, 14.25"x9.493". At 600dpi, 7.12"x4.747", at 1200dpi 3.56"x2.373". Think of cameras in terms of pixel resolution and printers in terms of dpi. When files are inserted into layouts, the embedded dpi value is used. You just need to change the embedded value to match up with the print size you desire. Obviously, if you want a 120"x80" print at 300dpi... you've got the wrong camera. :) Source(s): This is a good site for those interested in more technical details:
http://www.scantips.com/

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I have Olympus c-750> I need to shoot in jpeg format.................how do you tell if the camera is set for jpeg? I see tiff all over the place, but no way to "choose" between the two....


The SHQ option is the highest quality JPG image setting

You can download the manual from here...
http://www.olympus.co.jp/en/support/imsg/digicamera/download/manual/#c

All the info you need is on page 18,22 and 50

If you need further help drop me a line

Happy snappin

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2 Answers

How do I set the resolution


your best bet to get the most from the d80 is to get hold of the full english manual it can be downloaded from
ftp://ftp.nikon-euro.com/Manuals/ppY_QFonPh/D80-En_05.pdf
or
http://services.yesmembers.net/yes/content/D80_en.pdf


Happy snappin

May 19, 2008 | Nikon D80 Digital Camera with 18-135mm...

1 Answer

Photo quality problems


Besides the issues of focus or shutter speed causing things like camera motion, the file size indicates less than highest resolution and probably more the minimal jpeg compression. Too much compression could reduce detail.

Sep 14, 2005 | Canon PowerShot G6 Digital Camera

1 Answer

Features of each record mode


The details for each record mode are as follows: RAW: RAW data is unprocessed image data in its original state to which white balance, sharpness, contrast, color conversion and other processes have not been applied. CAMEDIA Master can be used to display RAW data and save it in other image formats. A RAW plug-in is also available for Adobe Photoshop which also provides the ability to process images in 32-bit color depth. TIFF: This is the highest-quality mode. images are saved as uncompressed data, which is the best for printing or image processing on a computer. SHQ: This is a high quality mode using the JPEG format. Because the compression rate is very low, high quality images can be stored. HQ: This is a high quality mode using JPEG format, with medium compression. Because the compression rate is higher than SHQ, file sizes are smaller. More images can be saved to a card. The file size can be changed in the 3:2 or Enlarge size mode as well as SHQ. 3:2 Mode: Ordinarily the image aspect ratio is set to 4:3. Due to change the ratio to 3:2, the picture size becomes 2592 x 1728 so that the image can be printed without losing the image borders at a photo lab. 3:2 can be set in the TIFF, SHQ, or HQ mode. SQ1/SQ2: SQ1 is used for resolutions above 1600 x1200 and SQ2 is used for resolutions below 1600 x1200. For both, you can choose high compression to reduce noise or normal compression to save more images.

Sep 04, 2005 | Olympus Camedia C-8080 Wide Zoom Digital...

1 Answer

Features of each record mode...


The details for each record mode are as follows: RAW: RAW data is unprocessed image data in its original state to which white balance, sharpness, contrast, color conversion and other processes have not been applied. CAMEDIA Master can be used to display RAW data and save it in other image formats. A RAW plug-in is also available for Adobe Photoshop which also provides the ability to process images in 32-bit color depth. TIFF: This is the highest-quality mode. images are saved as uncompressed data, which is the best for printing or image processing on a computer. SHQ: This is a high quality mode using the JPEG format. Because the compression rate is very low, high quality images can be stored. HQ: This is a high quality mode using JPEG format, with medium compression. Because the compression rate is higher than SHQ, file sizes are smaller. More images can be saved to a card. The file size can be changed in the 3:2 or Enlarge size mode as well as SHQ. 3:2 Mode: Ordinarily the image aspect ratio is set to 4:3. Due to change the ratio to 3:2, the picture size becomes 2592 x 1728 so that the image can be printed without losing the image borders at a photo lab. 3:2 can be set in the TIFF, SHQ, or HQ mode. SQ1: SQ1 uses the highest compression for resolutions greater than 1600 x 1200. You can choose high compression to reduce noise or normal compression to save more images. SQ2: SQ2 uses the highest compression for resolutions less than 1600 x 1200. You can choose high compression to reduce noise or normal compression to save more images.

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