Help For Newbie With Photoshop & Cabon 300D

Thu Apr 29, 2004 7:04 pm

Hi all

Although I use Photoshop 6.0 a lot for design work, I have never actually used it for photo enhancement and preperation. I have just bought a Canon 300D (REBEL) in the US (a bargain, even paying the VAT upon return) and I have been playing with my first photos.

I have been reading some of the other threads about improving rejected photos, but apart from figuring out what USM is, it is a lot of jargon to me.

Could someone give me some basic step-by-step advice as to how to get the best from my RAW images - in other words what filters to use and good values for each of them as starting points.

I am going to spend some time at LHR this weekend trying it out - being quiet local. Is there anyone going to be there this weekend I could meet up with for some general using help?


Posts: 3527
Joined: Tue Apr 13, 2004 5:11 am

RE: Help For Newbie With Photoshop & Cabon 300D

Thu Apr 29, 2004 10:00 pm

In general... Start to level your image - this should always be the first step!
Make the horizon straight!

2ndly: Crop the image if necessary. The objective should be in the middle of the image, with not too much space to the left and the right. Also look that the aircraft is centered vertically!

3rd: Resize... the best would be 1024x7** - if your image is really high quality go for 1200 or 1600 width!+

Then, apply the best contrast and the best colors...

Finally, sharp the image if necessary.... You will most likely have to do so as resizing makes the images soft.

Keep trying!

regards, Florian
Jet Visuals
Posts: 4586
Joined: Fri Aug 27, 2010 12:26 am

RE: Help For Newbie With Photoshop & Cabon 300D

Thu Apr 29, 2004 11:38 pm

As a starting point PS 6 can't read RAW files, so you're first problem is getting them into a useable format. For now you'll need to use the Canon software to convert RAW images to 16 bit tifs, but it sucks and its slow.

I would strongly recommend an upgrade to PS CS (use the money you saved on the camera  Smile). The built in file viewer and RAW conversion is worth the price of the upgrade alone, never mind the many other improvments.

Anyway, having got the file into PS you should first straighten and crop as required.

Next use the levels command to make sure you are using the full brightness range (from black to white).

If the shot seems lacking in contrast, or a bit dark or light overall, use the curves command. If you're not familiar with this, pushing the middle of the curve upwards increases midtone brightness (gamma). Making an "S" shape out of the curve increases or reduces contrast (depending which way round you make the S). Experiment, and you'll soon get the hang of it.

By selecting the appropriate channel, you can also make very precise colour adjustments using curves (though the hue/saturation tool is good too).

Check for dust spots (view at 100% for this) and use the clone tool to get rid of them.

Now resize the image to your target size.

Finally sharpen with USM - for Canon CMOS and 1024 pixel size, experiment with values around Amount 100-300, radius 0.3 threshold 0. Increase amount until artifacts or jaggies start to show on the screen, then back off a bit.

Convert to 8bit and save as jpg.

Of course there are many other filters you can play with - very few will actually help the image, though they can be fun if you don't want a straight photograph.



Straighten and crop as required.

Colin K. Work, Pixstel

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