image re-size
Posted 31/10/2010 - 00:02
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For the internet etc think of size in pixels e.g. 600 pixels long for the gallery here. That would also be a decent size for ebay although sometimes I go up to about 1000 pixels.
The resolution is then academic as the image will always display at the screen resolution - 72dpi usually - no matter what resolution you save at.
In photoshop my resizing drill is: 1 - resize to 600 pixels along the longest edge. 2 - Use the unsharp mask filter to restore sharpness lost during the resizing process. 3 - Save as high quality jpeg.
The resolution is then academic as the image will always display at the screen resolution - 72dpi usually - no matter what resolution you save at.
In photoshop my resizing drill is: 1 - resize to 600 pixels along the longest edge. 2 - Use the unsharp mask filter to restore sharpness lost during the resizing process. 3 - Save as high quality jpeg.
Posted 31/10/2010 - 00:11
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dpi (Dots Per Inch) has nothing to do with pixel size, it's how close the inkt dots are together when you print an image.
72ppi (Pixel Per Inch) is roughly the standard pixel density for most monitors.
Non of those are really important when you resize so just ignore them.
72ppi (Pixel Per Inch) is roughly the standard pixel density for most monitors.
Non of those are really important when you resize so just ignore them.
Stefan
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
Posted 31/10/2010 - 00:12
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Thanks for that info.
when i enlarge my ebay pics they pixelate(is that a word?)very quickly I will try them at 1000 wide
regards
Chris
when i enlarge my ebay pics they pixelate(is that a word?)very quickly I will try them at 1000 wide
regards
Chris
Posted 01/03/2011 - 09:40
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Still getting my head round resizing and image size.
I have found that images I upload to photobucket are degraded, I didn't realise the resize process affects sharpness
I am not using photoshop, is there any other way round it:
You learn something every day.
Regards
Chris
I have found that images I upload to photobucket are degraded, I didn't realise the resize process affects sharpness
I am not using photoshop, is there any other way round it:
You learn something every day.
Regards
Chris
Posted 01/03/2011 - 10:30
Link
chrissinkpen wrote:
Thanks for that info.
when i enlarge my ebay pics they pixelate(is that a word?)very quickly I will try them at 1000 wide
regards
Chris
So what exactly are you trying to do? are you pulling photos from your camera and shrinking them down? or are you enlarging photos to put on ebay?Thanks for that info.
when i enlarge my ebay pics they pixelate(is that a word?)very quickly I will try them at 1000 wide
regards
Chris
if enlarging you will of course get some pixelation, but shrinking you shouldn't really. Are you making sure that you are keeping the aspect ratio the same? for example, if you shoot in 6x4 you cant resize an image to 6x5 or it will be stretched and distorted.
Posted 01/03/2011 - 13:04
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Chris - try the FastStone programmes - Resizer and Viewer. Both free for home use. Easy to use, stable and very effective - so all round v good value.
Steve
Steve
In the Pack - Gripped K5 (SE),K7 & K20, Gripped MZ-S(SE)& MZ-S,DA10-17, DA12-24, DA14, DA*16-50, 50-135, 60-250 & 300mm; FA31mm/43mm/77mm Ltds; Sigma 8-16, 135-400 & 150-500
Half Backs: K10+BG,DA16-45, DA50-200
Backs: LXs,Super As and lots of A, M & K lenses
Impact Subs: 28mm Shift, K 135-600 (the Banahan of Pentax zooms ), 400-600 Reflex
Half Backs: K10+BG,DA16-45, DA50-200
Backs: LXs,Super As and lots of A, M & K lenses
Impact Subs: 28mm Shift, K 135-600 (the Banahan of Pentax zooms ), 400-600 Reflex
Posted 01/03/2011 - 19:11
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Thanks to all of you for advice and help
Regards
Chris
Regards
Chris
Posted 01/03/2011 - 20:29
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I export all my pics from my 'negatives' Lightroom catalogue to max size 1400x1000. then I import them into my 'finals' Lightroom catalogue for rating, keywording, etc,etc
I export max width 800 for here, 720 for facebook and 500/700 for Ebay
I export max width 800 for here, 720 for facebook and 500/700 for Ebay
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Posted 01/03/2011 - 21:14
Link
If you're on XP you can download the Microsoft PowerToy Image Resizer.
It integrates with the 'File' menu and the 'right click' on an image menu and has basic and advanced functions.
Scroll down to near the bottom of the page and look for ImageResizer.exe on the right hand side of the page.
http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx
Regards, Chris.
It integrates with the 'File' menu and the 'right click' on an image menu and has basic and advanced functions.
Scroll down to near the bottom of the page and look for ImageResizer.exe on the right hand side of the page.
http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx
Regards, Chris.
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631 posts
17 years
West Wiltshire
The choice of image size and image resolution is confusing.
What size in pixels ? what size in mm for resolution and do I need 72 or 300dpi ?
I need images for e-bay and e-mail.
I have been shooting in raw on my KX and resizing by 50%
Any help appreciated.
Regards
Chris