Post-processing Challenge

A set of 12 photographic challenges with a mix of genres and more individual topics.

Moderator: Sarahrs

Sarahrs
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Joined: Tue 27 Sep 2016, 21:05

Post-processing Challenge

Postby Sarahrs » Sun 02 Dec 2018, 21:33

Post-processing - online challenge
Give that filter or complex technique you wanted to try a go. Or even try some of the filters you can get on mobile phones. Let us know how you get on.

With the urge to be cosy coming upon us, and potentially some quiet days in the festive season, why not make the most of this and experiment with post-processing.
Iggy
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Joined: Thu 09 Apr 2015, 09:48

Re: Post-processing Challenge

Postby Iggy » Sun 20 Jan 2019, 20:36

Decided to try some post-processing in PhotoShop.
Always wanted to make a Red Bus stand out in a Black & White image.
A quick search on the internet told me how to do it.
I could have cleaned up the red on the truck, but I was being a bit lazy.
Regards,
Iggy

**** Did a better job of it in next submission below and deleted the first attempt.
Attachments
1Bs-Bus + Truck + Angel.jpg
1Bs-Bus + Truck + Angel.jpg (120.86 KiB) Viewed 1003 times
Last edited by Iggy on Tue 22 Jan 2019, 00:16, edited 2 times in total.
Sarahrs
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Joined: Tue 27 Sep 2016, 21:05

Re: Post-processing Challenge

Postby Sarahrs » Sun 20 Jan 2019, 21:54

Wow! that bus really does pop. How did you it?
Iggy
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Joined: Thu 09 Apr 2015, 09:48

Re: Post-processing Challenge

Postby Iggy » Sun 20 Jan 2019, 23:19

I did do a little tidy up using the eraser on the truck and the bus behind. Not perfect yet but doable.

*** Started again and got a much tidier image tonight< 21 January.
Attachments
1X-Bus + Truck + Angel.jpg
1X-Bus + Truck + Angel.jpg (112.18 KiB) Viewed 966 times
Last edited by Iggy on Tue 22 Jan 2019, 00:11, edited 1 time in total.
Laura
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Joined: Thu 27 Sep 2018, 21:09

Re: Post-processing Challenge

Postby Laura » Mon 21 Jan 2019, 17:07

Iggy wrote:Decided to try some post-processing in PhotoShop.
Always wanted to make a Red Bus stand out in a Black & White image.
A quick search on the internet told me how to do it.
I could have cleaned up the red on the truck, but I was being a bit lazy.
Regards,
Iggy


It works very well Iggy, well done ! I also find the challenge is not to be lazy with "the rest of the image" as you say - but I am sure there are various techniques to do this.

I mainly stick with Lightroom and do this there with the individual colours saturations. But the leftovers can be a challenge.
Iggy
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Joined: Thu 09 Apr 2015, 09:48

Re: Post-processing Challenge

Postby Iggy » Mon 21 Jan 2019, 19:51

Thanks Sarah & Laura for your comments.
Here is the simple method that I found for Photoshop:
https://enviragallery.com/how-to-make-a-photo-bw-except-one-color-in-photoshop/
Mike Farley
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Re: Post-processing Challenge

Postby Mike Farley » Mon 21 Jan 2019, 22:13

Laura wrote:I mainly stick with Lightroom and do this there with the individual colours saturations. But the leftovers can be a challenge.

Lightroom is not really ideal for this type of image although the new range mask function can help. Anything which really requires layers is best undertaken in Photoshop.
Regards

Mike Farley
(Visit my website and blog - www.mikefarley.net)
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Peter Boughton
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Re: Post-processing Challenge

Postby Peter Boughton » Mon 21 Jan 2019, 23:31

Doing this sort of image well is definitely a job for a graphics editor.

Export two images - one exposed for the colour part and one exposed as mono (Lightroom's mono conversion does more than just desaturating), paste the colour as a layer over the mono and add a layer mask to hide it.

For something like a bus, the edge-finding variant of the selection tool (Magnetic Lasso?) to select the outlines then bucket fill is probably the simplest way, but for more complex shapes a feathered brush to paint in/out the colours wont take long.

Using Color Range as per the linked tutorial to get an initial selection to use with a mask would be perfectly fine, but the crude way of deleting pixels listed in the tutorial doesn't provide the flexibility that a mask does.
Iggy
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Joined: Thu 09 Apr 2015, 09:48

Re: Post-processing Challenge

Postby Iggy » Tue 22 Jan 2019, 00:26

Hello Mike & Peter.
Deleted the bad attempts and having gained a little more experience, just redid it in Photoshop as per instructions in tutorial above and got a more acceptable result.

Mike, I some what remember your lovely image in an Art Gallery where one viewer was in colour!
Love to see that one again!
How was yours done?
Iggy
Mike Farley
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Re: Post-processing Challenge

Postby Mike Farley » Tue 22 Jan 2019, 07:28

Iggy wrote:Mike, I some what remember your lovely image in an Art Gallery where one viewer was in colour!
Love to see that one again!
How was yours done?

Sorry, Iggy, I do not know to which image you are referring. Can you give a clue as to the subject matter?

FWIW, I have only ever colour popped one image and that was during my 365 project a few years ago. The link is below which includes a discussion of the technique I used. I did it in Photoshop using layers and was straightforward as in the falling snow, the scene was already quite monochromatic. I did not have to worry too much about accuracy when rubbing through the layer mask.

viewtopic.php?f=6&t=209
Regards

Mike Farley
(Visit my website and blog - www.mikefarley.net)

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