Hello,
I am currently using CS5 to enhance microscope images of otoliths (fish earbones). In previous versions of Photoshop I could add a scale bar by going to Image>Analyze>Place Scale Marker. I require a scale bar with 0.75, 0.85 and 1.0 mm increments. The image below shows a scale bar with these increments in red, yellow and blue made using an older version of Photoshop.
I also have Photoshop Elements and Lightroom at home and have not found a measurements option with those version either. Does anyone know how this is done using CS5?
Thank you.
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Thanks for your help. Are you able to give me a bit more how-to detail? I can draw a shape by eye to be the same length of the existing 1mm scale bar. I then do Ctrl + T to transform. But after that, I'm not sure how to proceed.
Place some guides as in my above example. Zoom in so you can place the as actuately as possible.
It's in the latest version of Photoshop CC 2015 under Image > Analysis (for CS6 and earlier, as noted, you had to have the "Extended" version of Photoshop to access this capability):
I used to do a lot of small scall measurements in some photos. I created my own custom scale that I could place and size according to the scale of the image. Make it big, put it in a smart object, then place it in your image and scale it to size.
Create a new document. 5000-6000 px is a good size. Size really doesn't matter at this point, as you will be scaling the final ruler.
Draw a shape line using either the rectangle tool or the line tool. for the markers on your scale:
Duplicate the marker and move the new layer to the other end of the canvas, then duplicate that layer for how many divisions + 1 that you want. So if you want a 1 mm scale with 10 divisions, make 11 markers total.
Select all the marker layers and with the move tool selected, click on the distribute centers icon in the menu bar.
Select all the layers where you want the major divisions. In this case it's the two end markers. Press ctrl/cmd-T and scale those markers taller:
Add whatever text you want:
Delete the background layer and then select all the layers and press ctrl/cmd-E. The will merge everything into one vector layer that can be scaled to whatever you want. Save this file for future use. To use it. open you image file and your scale file. Drag the scale file onto your image file. You can then scale the scale to whatever size you need. For this, you don't want to use a smart object, as this is a vector image, and works better outside a smart object.
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