Author Topic: Add a tip for Photoshop please!  (Read 139601 times)

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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #75 on: March 30, 2008, 02:06:19 AM »
OK, I'm sure this has been posted before, but just in case it hasn't... (and I've only just discovered this!)

When using the B&W filter in CS3, instead of using the different colour sliders, did you know that (with the dialogue open) you can just click on parts of the image and drag it right (to lighten) or left (to darken) - which basically drags the corresponding slider (of the colour below where you clicked)?

As I said, I didn't know until today !!!  ;)

I think stef has it embedded in one of her tips, I will try to check.

Yes it is in there but I did not want to mention it- keeps members encouraged to post and reminds others. By the way this is actually a very good tip to all of you who have not tried it out!
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Offline AScot

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Re: Add a tip for Photoshop please!
« Reply #76 on: April 01, 2008, 05:14:21 AM »
How to size Photos for the Internet.

If you wish to prepare a photograph for submission to the [Monthly Challenges] [Photo Critiques][Images to Share] or to any other board, here is how it’s done in Photoshop, Elements is probably similar. Not sure about other programs.

NOTE:
This method will strip the exif data from your photo. If you wish it to be present, then use this method.

1) After you are finished modifying and tweaking your photo, Go to >File >Save for web.
2) A new window will open with your photo shown full size. Click >Image Size. The size information of your photo will appear in the box. See Pic#1.
3) Change the >width or the >height (whichever is the largest) to 800.
4) Click >Apply.
5) Go up towards the top of the right side, you will see a tiny double arrow to the right of Preset. Click this Arrow and a context menu will open. Choose >Optimize to file Size. A small window will open.
6) Enter 150 (this has now been changed to 200) in the >Desired file size: box, leave current settings and current slice chosen. Click OK. The box will disappear.  See Pic#2
7) At the very top right side, click save and enter your desired file name and location.




« Last Edit: April 20, 2008, 11:47:33 AM by AScot »
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #77 on: April 02, 2008, 10:59:01 PM »
Well just a very quick one- as I think I have not mentioned it before and I guess most of you know it...NEVERTHELESS it is very useful:

Levels adjustments

Should you ever use levels instead of curves and you move the black or white little sliders inwards until they are under the beginning of the histogram- hold the alt/apple key down while moving that slider. The image will either turn completely black or completely white. Keep moving the slider in until you either have the first black or white point turning up in your image and this is where you should stop moving. Often this point is further in than the "foot" of the histogram and t is the optimal point for contrast.
Hope as usual that this helps the one or other of you!
Happy photoshopping
Stef. :P
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #78 on: April 02, 2008, 11:04:26 PM »
Sloppy Horizon?

You are not sure how to correct a sloppy horizon in your wondfull landscape images?
1. Open your image
2. Choose the ruler tool (hidden under the colour picker in your tools palette over your hand tool)
3. Click somewhere where it should be straight and drag along the line which should be straight (keep the mouse clicked while dragging!)
4. Now here comes the cool part: Image > Rotate Canvass > Arbitrary > just click O.K.
5. Voila!!! Your image is straight and you just have to crop it!

Clever- eh?

Hope this helps?

Happy photoshopping
Stef. :P
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #79 on: April 06, 2008, 03:08:37 AM »
How to emulate filters (This is the answer to a request by Ascot and follows a discussion between mainly Springtide and myself in another thread: http://www.dynaxdigital.com/index.php/topic,4772.msg34325.html#msg34325

Option I
Now let's assume for one moment you did download the Lee filter swatches from somewhere- one of the easiest ways to emulate a particular Lee filter (if not completely correct nevertheless close!) is to do the following:

You can just open you image than open your Lee filter (the one you have hopefully saved somewhere on your harddrive  ) and do the following:

1. click on you lee filter -> ctrl +c (=copy)
2. click on your image -> ctrl + V (=paste)
3. edit -> transform ->scale -> drage the handles until the lee filter is covering your whole image
4. set the layer blending mode from normal to colour and reduce the opacity to around 25%
Please keep in mind though- real Lee filters are obviously different than colour swatches as they are made of glass and usually in front of your camera ;)

Option II

This is if you don't have the swatches:
1. open you image in PS
2. layer > new adjustment layer > photo filter > click O.K. => a new dialogue window will open
3. Now you have two alternatives: (a) you try one of the presets: the easiest is to highlight the top one and then just scroll down by using the arrow keys on your keyboard paying attention on the effect that particular filter gives you with your image. Do not forget to play around with the density slider as well - to get a more subtle effect!!
(b) Here it gets interesting and the Lee filters come into play: In the dialogue box instead of choosing the presets > tick "colour" => your cursor becomes a colour picker (!) > double click in the little colour window > now you can choose any colour BUT the cool thing is: you don't need to choose a colour from the dialogue window that opens but you can choose ANY colour- also one from a colour swatch that you have downloaded from the Lee website or even another photograph!!! (Just see how the colour in the little window changes accordingly to where you used your colour picker!)
Don't forget again to play around with the density slider.
Voila you should be done!

For Advanced Users:
The above CAN get more complicated if you want to have 100% the real Lee filter effect: what you would have to do is take two images of the same object in the same light conditions- one with the Lee filter on the other without. Now you open both up in PS next to each other. Click F8 or Window > Info > at the same spot in both of the images and measure the values for RGB in the info palette. Now you will know how much warmer/ cooler/ redder/ greener...the one with the Lee filter is compared to the one without. Now it gets tricky: once you know these exact values you have two options...(actually many many more as usual... but let's keep it simple ;) ):
(a) you can make a colour balance adjustment layer and play around with the sliders until you get exactly the same values as in the image with the Lee filter and save this setting for later use in form of an action. (You could also take curves/ levels or pretty much  any other adjustment layer - they are more or less all able to do that)
(b) you could follow step one from above and at first take a photofilter preset that comes close to the desired effect and play around with the density until you get the desired values- don't forget you can stack the photofilters as well(!) (In other words you can use more than one photofilter adjustment layer)
(c) and just for the fun of it- I just throw in another option: you can use the match colour command under image > adjustments > match colour and save the statistics of the Lee filter image for future use to match with all your images... guess this leads a bit far...

I don't want to go one here (which we easily could ;)) just in case I scare people away- keep in mind this was a request (!). If you really need/ want to know more or something is not clear- just put it under the request section and I promise you we go a level (or two or three... ;)) up...

Hope this helps?
Happy photoshopping!
Stef. :P
« Last Edit: April 06, 2008, 03:13:28 AM by Stef. »
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Offline Akshay Jamwal

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Re: Add a tip for Photoshop please!
« Reply #80 on: April 07, 2008, 12:34:36 PM »
Wow. Hadn't noticed this thread until now, don't know how I missed it!

Stef, you should write a book! The stuff in this thread is pretty darn cool!
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Offline Chris Huber

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Re: Add a tip for Photoshop please!
« Reply #81 on: April 20, 2008, 06:07:36 AM »
I was wondering if there is a way to correct barrel-distortion or to lessen or increase this effect (on pics taken using a fisheye lens) in Photoshop 7?

Any ideas......???

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Offline AScot

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Re: Add a tip for Photoshop please!
« Reply #82 on: April 20, 2008, 11:39:37 AM »
How to size Photos for the Internet and keep your exif data embedded.

If you wish to prepare a photograph for submission to the [Monthly Challenges] [Photo Critiques][Images to Share] or to any other board and keep your exif data embedded, here is how it can be done in Photoshop, Elements is probably similar. Not sure about other programs.

NOTE:
Be sure that this is what you really want as some exif data may contain personal information, such as your email address, home address and your name. If you do not want this information to be available to users of the internet, then prepare your photo using This Other Method

1) After you are finished modifying and tweaking your photo, Go to >Image > Image Size. A new dialog box will open. (See Pic one) Ensure that 'Constrain Proportions' and 'Re-sample Image:' boxes are checked and one of the Bi-cubic methods are chosen. Change the >width or the >height (whichever is the largest) to 800. Click 'OK'.

Pic one.


2) Go to >Edit >Convert to Profile. In the box that opens (See Pic two) ensure that 'Profile' is sRGB IEC61966-2.1. Click 'OK'.

Pic two.


3) Go to >File >Save As and in the dialog box, check the 'As A Copy'. Click 'Save'.

4) In the JPEG Options window that opens, (See Pic three) ensure that 'Preview' is checked and move the slider until the file size is less than 200Kb. Click 'OK'.

Pic three.


Thats it. When posted, your picture will contain all the exif data that is in the original file.
« Last Edit: April 25, 2008, 10:35:38 PM by AScot »
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #83 on: April 20, 2008, 07:28:45 PM »
I was wondering if there is a way to correct barrel-distortion or to lessen or increase this effect (on pics taken using a fisheye lens) in Photoshop 7?

to correct barrel-distortion in PS 7

In the newer version of PS we now have something called filter > distort > lens correction which works wonder once you start playing around with it. Not sure since what version of CS that filter exists???

Another simple option is:

1. Layer > New > Layer from Background (or just double click the background layer to convert it to a layer)
2. Edit > Transform > now: try perspective first (but the other ones work as well)
3. Pull the corners of the image a bit out so that you can see all corner handles. Now start with pulling out the bottom right and left hand handles until the perspective is right- or depending on the problem with your perspective use the top left and right one
4. Flatten the image and you should be done.

BTW:

This is also a good trick if your foreground interest object turns out to be too small. You can enlarge it this way and then blend the duplicated layer together with the original background layer.

Hope this helps?
Happy photoshopping!
Stef. :P
« Last Edit: April 21, 2008, 08:49:09 AM by Stef. »
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Offline Chris Huber

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Re: Add a tip for Photoshop please!
« Reply #84 on: April 21, 2008, 07:50:30 AM »
Hi Stef!

Wow, easy once you know what to do!  Great tips!

Thanks.

Chris

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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #85 on: April 21, 2008, 12:19:44 PM »
How to clean up a studio background?

Guess you all had this at some point: you shoot a model in front of a white studio background with sophisticated lighting and then realise that the lighting was not that good… Instead of an even super white background you end up with some blotches or shadows- sounds familiar???


Well here is what you can do:

“Replace Colour” Command

1. With your image open: Image > Adjustments > Replace Colour => click on the white background. Now hold shift and keep on clicking on all the offending parts. You will be able to tell from the preview window whether you got them all. Use the fuzziness slider to fine tune the results.
2. The only thing you have to do now is to move the lightness slider all the way to the right.
3. At a very last step once you are done with this- open up curves or levels and adjust the contrast of your model by either moving the curve in the middle slightly upwards (assuming black is on the left hand side) or the middle slider of the levels command.

Voila you should be done! Background white and photographer happy!

NOW: Never a tip without another one! If you decide to change the background colour completely- nothing easier than that! Just play around with the hue and saturation sliders as well while keeping lightness at 0. You can then adjust the lightness of your particular colour- but colour comes first!

Hope this helps?

Happy photoshopping!
Stef. :P
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #86 on: April 21, 2008, 02:47:13 PM »
Macro Shot with great depth

I came across the following tip today and thought it might be of interest to some of you?
When we shoot macro shots we usually have a very shallow depth of field. If you want to increase the "in-focus area" than you have to start with shooting more than one image of the same object. In each of your shots you shift the focus point slightly. I.e.: you start with focusing on the first petal of a flower- the once closest to you. Then you focus on sth. slightly behind the first focus point and so on. At the end you might have something such as 6 images with differing focus points. Now the question is how to combine them in PS?

Here is what you do in CS3:

1. file > scripts > load files into stack (use the browse button to search for your files) > make sure: "attempt to automatically align source images" is ticked > click O.K.
2. The images will be loaded as a single layer file. Switch of all layers by clicking the eye next to them just leaving the bottom on turned on. Create a layer mask and paint with a soft large brush in black over the parts of this image that are not in focus to hide them. If you make a mistake change the colour to white and paint over it again
2. Now turn the bottom layer's visibility off by clicking the eye next to that layer and turn the visibility of the next layer on. Do the same procedure of step 1 again with all layers using layer masks and painting with black onto them.
3. At the very end flatten your image. You might see some overlappin at the edges. Use the crop tool to get rid of them.
4. Use levels or curves to adjust the contrast
5. You might want to increase the saturation with a hue/saturation adjustment layer
6. Finally sharpend the image to your liking

Hope this helps?
Happy photoshopping
Stef. :P
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #87 on: April 23, 2008, 10:54:09 AM »
How to add a signature to your images?

1. sign with a black pen on a white sheet of paper and either scan your signature into Photoshop at 300ppi or just take a photograph of it making sure your writing is in focus
2. once that signature is in PS: open the levels palette in Photoshop (image > adjustments > levels) and drag the left (black) slider to the right and the right (white) slider to the left until the writing is pure black and the paper is pure white.
3. take the rectangular marquee tool and make a selection around your signature
4. edit > define brush preset > save the brush as your signature
5. open the image you want to add your signature to > create a new layer > select the colour you want to have by double clicking the foreground colour swatch > search for your brush under the brush presets and add your signature. Using the backet keys [ or ] allows you to alter the brush size.
6. you can now lower the opacity of the signature layer or even add some layer blending effects. These effects could be save as an action for later use.

As usual: a variation:

In effect you can create a whole image as your personal signature doing whatever you want to it. At the end once the image layers are flattened you can do the following: select all and do step 4 from above!

Hope this is helpful?
Happy photoshopping
Stef. :P
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #88 on: April 30, 2008, 08:42:05 AM »
Blown out Highlights

This is a quick tip for rescuing blown out highlights- especially when shooting in Jpegs:

1. open your image in PS
2. Image > Adjustments > Levels: here you have two level adjusters- the inputand the outputsliders. Use the output slider for this exercise and where it says 255 put something around 245 in. This will make sure that when you print the image that you still have some graduation in the white parts of your image. Can work wonders with clouds in the skies!

Hope this helps?
Happy photoshopping!
Stef. :P
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Offline Stef.

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Re: Add a tip for Photoshop please!
« Reply #89 on: April 30, 2008, 09:04:21 AM »
Three Step Sharpening: capture sharpening/ creative sharpening and output sharpening

Now when it comes to Photoshop there are always a hundred different ways for doing things and much worse a hundred different opinions about what is best ;)

This is one possible way of achieving the best result...

It is sharpening in three steps. Some people would say " don't sharpen at all in-camera and/or in the RAW converter but do everything in Photoshop.

Now I suggest you try the following and make up your own mind ;) : Make sure you look at your image at 100%!!!
1. Do it as you always would do it so you have a chance to compare the results! Make sure thought that you work on a duplicate of the original.
2. Now trythis:
a) make sure you don't sharpen your image in RAW but just open it up in PS
b) before you do any adjustments do this: filter > sharpen > smart sharpen > tick "preview" and "basic"; amount 125%; radius 1; remove: lens blur; untick "more accurate" > click O.K
c) NOW do all your usual adjustments. Once finished- flatten you layers should you have any and make a copy of your background layer: layer > new > layer via copy (or: ctrl+J)
d) smart sharpen again with the same settings as under b
e) layer > layer mask > hide all => the effect from the last step will completely disappear
f) take a brush tool with white as foreground colour and paint carefully over the parts that you need sharp (eyes, flower petals...) and leave skin ...out
g) once this is done > flatten your image once more > now resize it to your final output size and should you want to print it than believe it or not: sharpen once more as under b just this time put 25% under "amount"

Give it a try and let me know what you think!

Happy photoshopping!
Stef. :P
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