image quality test

[pjs2]

Copy-of-IMG_0743_edited-3.jpgCopy-of-IMG_0743_edited-2.jpg

[WhoDo]

Looks a bit soft, Peter. I can't see the EXIF so I can't say whether that's a compression issue or otherwise. Cheers.

[pjs2]

Thanks Whodo,
The orig photo I think is as sharp as a tack. But when I resize it, it turns out soft. I am a bit of a dufuss when it comes to the pp stuff. I will just have to keep playing around with photo shop till I learn how.
Cheers
Peter

[Image]
Make = Canon
Model = Canon EOS 50D
X Resolution = 72
Y Resolution = 72
Resolution Unit = inch
Date Time = 2011-12-25 13:16:28
Artist =
YCbCr Positioning = co-sited
Copyright =
Exif IFD Pointer = Offset: 250
GPS Info IFD Pointer = Offset: 8448
A401 = 0
A402 = 1
A403 = 1
A406 = 0
[Camera]
Exposure Time = 1/2"
F Number = F7.1
Exposure Program = Manual
ISO Speed Ratings = 800
Exif Version = Version 2.21
Date Time Original = 2011-12-25 13:16:28
Date Time Digitized = 2011-12-25 13:16:28
Components Configuration = YCbcr
Shutter Speed Value = 1 TV
Aperture Value = 5.63 AV
Exposure Bias Value = ±0EV
Metering Mode = Pattern
Flash = Flash did not fire, compulsory flash mode
Focal Length = 50mm
Maker Note = 7512 Byte
User Comment =
Subsec Time = 0.28"
Subsec Time Original = 0.28"
Subsec Time Digitized = 0.28"
Flashpix Version = Version 1.0
Color Space = sRGB
Exif Image Width = 3168
Exif Image Height = 4752
Focal Plane X Resolution = 5306.533
Focal Plane Y Resolution = 5315.436
Focal Plane Resolution Unit = inch
[Thumbnail Info]
Compression = JPEG Compressed (Thumbnail)
X Resolution = 72
Y Resolution = 72
Resolution Unit = inch
JPEG Interchange Format = Offset: 8560
JPEG Interchange Format Length = Length: 12806
[Thumbnail]
Thumbnail = 120 x 160

[fess67]

What steps are you taking in photoshop to resize?

What is the sharpening set to when you resize? If it is not set to it, try bicubic sharper (best for reduction) and see if that helps.

[pjs2]

Copy-of-IMG_0743_edited-5.jpg
Bicubic sharper


Copy-of-IMG_0743_edited-3.jpg
Bicubic

fess67
It does look a bit sharper

[gerry]

have a look at these two threads, should give you some good info about sharpening for different purposes, for the web, look at 'progressive sharpening'

http://www.ausphotography.net.au/for...gressive+sharp


http://www.ausphotography.net.au/for...eed-SHARPENING

[agb]

Perhaps you might like to read some of Damien Symonds articles on sharpening for the web.
This one perhaps.http://damiensymonds.blogspot.com/20...eb-lately.html

[ricktas]

I moved this thread. The Test Zone is for testing AP site features, whereas this thread is more about post processing.

It is a much lauded guideline that after resizing, one should then sharpen. Sharpening should be the very last step before saving. Resizing a photo means your software does a lot of clever algorythm processing, and a side effect of that process, is that photos often look softer after resizing, So try leaving your sharpening to last, and see how that improves things.

[William]

Dont know wether this will help , I noticed in the Exif data your only using 72 DPI Res, Try 240-300 DPI , I dont often look but I noticed Kym's shot the other day and he uses 240 , I always have used 300 and we both dont have a problem , It's not gunna cost anything to try , May help PS : Just changed it to 300 DPI , Can aynone see a difference

[ricktas]

72ppi was based on the old CRT screen's. Most monitors these days are 100ppi or above, so at least consider doing them about 150ppi as a minimum, though 300ppi is the standard for printing.

[William]

Hi Peter, In answer to your PM, I change my DPI/PPI At the export stage of processing on the TIFF file , I shoot RAW , It then stays with the image , Even to JPEG , You can change it on a JPEG in PS , By going to Image>Image Size>In the POP up box Deselect resample image , Change from 72 to whatever in my case 300 PPI , Then reselect resample , Like this , Hope this helps , Any questions , Just ask - Bill

[reaction]

72ppi was based on the old CRT screen's. Most monitors these days are 100ppi or above, so at least consider doing them about 150ppi as a minimum, though 300ppi is the standard for printing.

When printing enlargements, say your don't have pixels for 300ppi at the size, is it better to let the printer work it out, or do some PS enlargements to take your image to 300ppi? If so how do you do it? For a start my uncropped will come in at 240ppi, and I usually crop a bit.