chris33
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Posts: 15
Joined: Sat Apr 10, 2010 3:32 am

Image Editing With Photoshop

Fri Sep 03, 2010 2:49 am

Hi Everyone,
Following the advice given on this website I shoot with the highest definition possible (15Mpixels). On a first attempt last time I have, I believe, obtained decent pictures. But after reducing the size of my good images to 1024 (as demanded) it looks like I am loosing image quality and especially sharpness. Could someone get me through the process or give me some tips for this operation please?
Thanks you
 
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cpd
Posts: 4578
Joined: Sat Jun 28, 2008 4:46 am

RE: Image Editing With Photoshop

Fri Sep 03, 2010 4:10 am

You'll need to apply some sharpening in the process - that's inevitable. But you'll need to use selective sharpening, rather than just blanket sharpening the whole image.

I recommend if you are using RAW images, to bring them in through Camera Raw as Smart Objects. That gives you more flexibility with editing them.

There are many tutorials around this:

http://www.peachpit.com/podcasts/epi...5B515C-7D16-4D8F-8211-492A48788096

JID has two good workflow tutorials too:

http://www.jid.me.uk/workflow/index.html
http://www.jid.me.uk/workflow/Workflow2/index.html

You can see the differences in JID's method and others. I for instance do the cropping and straightening adjustments in Camera Raw - and do only levels/sharpening/noise reduction in Photoshop's main editing environment. Where JID advocates using a duplicated layer that is equalised to find dust spots, I crank up the black point in Camera Raw and use the dust removal tool in Camera Raw. But for tricky dust spots, I use JID's method to find the difficult dust spots - and camera raw to get rid of them.

As you can well see, there are so many ways to process your photos - you have to try them all and see what works for you.
 
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jid
Posts: 889
Joined: Wed Dec 01, 2004 7:37 pm

RE: Image Editing With Photoshop

Fri Sep 03, 2010 7:50 am

Well Chris, when resizing in Photoshop you have a few options. I use Bicubic Sharper, and as PS tells you now it is best for down sizing. This algorithm will try and maintain the sharpness of your image but you always need to check and normally add a little more sharpness to a re-sized image.

Just to let you know the URL's above although still there have been replaced with new ones..

http://www.jid.me.uk/tutorial1.html

and

http://www.jid.me.uk/tutorial2.html

There is also a YouTube page on my site with a screen recording of how I edit an image.

Good luck de Jid
G7EPN is back after 15 years! Operating all Bands 80mtrs -> 70cms QRZ DX
 
Numero4
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RE: Image Editing With Photoshop

Fri Sep 03, 2010 4:11 pm

Bonjour Jérôme,

As mentioned earlier, there are a lot of very good workflow-related tutorials out there. This one has helped me a lot in the past and I still look at it from time to time, because most of us (well, I at least) who have a few photos in the databse are not experts and are still at the beginning of the learning curve.

Quoting Jid (Reply 2):
Just to let you know the URL's above although still there have been replaced with new ones..

http://www.jid.me.uk/tutorial1.html

and

http://www.jid.me.uk/tutorial2.html



Also, to answer your immediate concern:

Quoting chris33 (Thread starter):
But after reducing the size of my good images to 1024 (as demanded) it looks like I am loosing image quality and especially sharpness.

I recommend applying sharpening at the very end -- after resizing your image. That way you will gain sharpness after the resizing process.

Bonne chance  
--Etienne
CYQB
 
teopilot
Posts: 547
Joined: Mon Jul 19, 2010 6:41 pm

RE: Image Editing With Photoshop

Fri Sep 03, 2010 4:17 pm

Hi Chris,

I had the same problem few time ago: the problem was to hold the same quality (sharpness as well) after saving re-sized images in JPEG format.
Like you, I very often had "soft" shots, softness that was very noticeable especially in writings/paintings on the aircraft.
I edited following the advices of old hand spotters, of many tutorials, but the problem was still there...

what I'm going to write you sounds very strange to me, but the problem has been fixed... but I repeat that really I can't figure out how it is possible...
I used to crop at a 4:3 ratio, when my camera give me an image at 3:2.
Well, one day I said "Matteo, why don't you try to crop at a 3:2 ratio"... so, I tried it out, and at the end of work flow, I compared the same shot, with same settings once saved at 1024*768 and once at 1024*683...

Finally, the problem was fixed, and in the 3:2 ratio re sized image all was more sharpened than in the other picture...

So, what I suggest you, basing on my experience, is to try a crop with the same ratio setting as your camera shoots...
(if 4:3 crop at a 4:3 ratio, and if 3:2, crop at 3:2)

Really, I know it may sound "quite stupid" but for me worked...

Let's try, my friend, and let me know...

Matteo
 
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clickhappy
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Joined: Thu Sep 13, 2001 12:10 pm

RE: Image Editing With Photoshop

Fri Sep 03, 2010 6:01 pm

People make brain surgery out of Photoshop editing. Taking a photo from the camera to a-net ready should take less than a minute.

Here is my workflow.

1) Open .NEF in NX Capture
2) Run Lens Correction
3) Save as JPEG
4) Open JPEG in Photoshop
5) Remove any dust spots
6) Adjust color or exposure as needed. Older Nikon shots always have a green-yellow cast in my eyes, so I always use 3, -3, 2 as a color adjustment (usually just on D200 shots)
7) Level as needed
8) Crop using a 3:2 crop ratio. Important: set your crop tool style to "fixed ratio" with a feather of 0
9) Resize cropped photo to your desired size, since you have cropped at a fixed ratio, only 1 number matters, I use 1024 pixels for the horizontal size
10) Sharpen as needed, I use an Unsharp Mask of 40 (used to be 50), .7, 0 for 95% of my shots
11) File> Save as> Filename

You don't need to go through all that resizing and sharpening baloney.
 
teopilot
Posts: 547
Joined: Mon Jul 19, 2010 6:41 pm

RE: Image Editing With Photoshop

Fri Sep 03, 2010 6:50 pm

Quoting clickhappy (Reply 5):
People make brain surgery out of Photoshop editing. Taking a photo from the camera to a-net ready should take less than a minute.

Here is my workflow.

1) Open .NEF in NX Capture
2) Run Lens Correction
3) Save as JPEG
4) Open JPEG in Photoshop
5) Remove any dust spots
6) Adjust color or exposure as needed. Older Nikon shots always have a green-yellow cast in my eyes, so I always use 3, -3, 2 as a color adjustment (usually just on D200 shots)
7) Level as needed
8) Crop using a 3:2 crop ratio. Important: set your crop tool style to "fixed ratio" with a feather of 0
9) Resize cropped photo to your desired size, since you have cropped at a fixed ratio, only 1 number matters, I use 1024 pixels for the horizontal size
10) Sharpen as needed, I use an Unsharp Mask of 40 (used to be 50), .7, 0 for 95% of my shots
11) File> Save as> Filename

You don't need to go through all that resizing and sharpening baloney.

do you save twice in JPEG format?

then... what do you mean with lens correction ?
 
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clickhappy
Posts: 9042
Joined: Thu Sep 13, 2001 12:10 pm

RE: Image Editing With Photoshop

Fri Sep 03, 2010 7:52 pm

Yes - I save it twice as a JPEG.

Lens correction is a built-in feature of Nikon Capture NX, it will correct pin cushion and barrel distortion.
 
teopilot
Posts: 547
Joined: Mon Jul 19, 2010 6:41 pm

RE: Image Editing With Photoshop

Fri Sep 03, 2010 8:01 pm

Quoting clickhappy (Reply 7):
Yes - I save it twice as a JPEG.

Lens correction is a built-in feature of Nikon Capture NX, it will correct pin cushion and barrel distortion.

thank you...
with my canon digital photo professional I have a feature like that... I'll try to use it!  

then... Looking at your workflow: why do you save twice as JPEG?
 
chris33
Topic Author
Posts: 15
Joined: Sat Apr 10, 2010 3:32 am

RE: Image Editing With Photoshop

Fri Sep 03, 2010 10:16 pm

Many thanks to all of you for explanations and advices, I really appreciate. This is very helpful for me who begin. I'll check the tutorials with the other points suggested. Hopefully I will be able to produce a publishable image shortly. I am going back to photoshop now. I'll keep you posted.
All the best.
 
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jid
Posts: 889
Joined: Wed Dec 01, 2004 7:37 pm

RE: Image Editing With Photoshop

Fri Sep 03, 2010 11:06 pm

Quoting clickhappy (Reply 5):
Here is my workflow.

1) Open .NEF in NX Capture
2) Run Lens Correction
3) Save as JPEG
4) Open JPEG in Photoshop
5) Remove any dust spots
6) Adjust color or exposure as needed. Older Nikon shots always have a green-yellow cast in my eyes, so I always use 3, -3, 2 as a color adjustment (usually just on D200 shots)
7) Level as needed
8) Crop using a 3:2 crop ratio. Important: set your crop tool style to "fixed ratio" with a feather of 0
9) Resize cropped photo to your desired size, since you have cropped at a fixed ratio, only 1 number matters, I use 1024 pixels for the horizontal size
10) Sharpen as needed, I use an Unsharp Mask of 40 (used to be 50), .7, 0 for 95% of my shots
11) File> Save as> Filename

You don't need to go through all that resizing and sharpening baloney.

Brain surgery? Resizing is hardly that, just enter a single pixel dimension. BUT the resizing algorithm has to be selected, if you want to use the default fine but using the correct one for the job I find is always the best.

I guess for saving for the net then saving to jpeg twice, double the compression, loss etc is OK I guess not quite sure why you would ever want to do it maybe it is a quirk of Nikon software.

When you set your crop ratio it is FIXED and there is no feather with a crop, you might be getting confused with the marquee tool?

The main thing is that if your workflow works then it works and that's the main thing, there is no definitive workflow you just find what baloney works best for you.
G7EPN is back after 15 years! Operating all Bands 80mtrs -> 70cms QRZ DX
 
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clickhappy
Posts: 9042
Joined: Thu Sep 13, 2001 12:10 pm

RE: Image Editing With Photoshop

Sat Sep 04, 2010 1:55 am

Sorry Jid, but those extra steps are useless when viewing images on a screen.

I've been using PS since version 3 and have no idea what a "resizing alogorithm" is. Maybe you are talking about resampling? My understanding is that only applies to images that you are trying to enlarge. For the record, I would avoid any sort of upsizing via PS, there are better, third-party tools out there. I've had brilliant results up to and including a billboard.

Perhaps you can post some of your rejections and we could run a test - we could compare the results and others could learn from it.

Hope this helps!
 
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cpd
Posts: 4578
Joined: Sat Jun 28, 2008 4:46 am

RE: Image Editing With Photoshop

Sat Sep 04, 2010 2:39 am

To get this back on topic again - here are some other sharpening concepts:

http://www.photoshopsupport.com/tuto...pen-an-image/photo-sharpening.html

This is by no means the be-all and end-all, but they are some different ways of sharpening. Sometimes you'll encounter images where you absolutely must do some more careful sharpening.

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