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Pages: 1 ... 4 5 [6]
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Author
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Topic: I want to learn Photo Restoration - Guidance needed (Read 5485 times)
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dennford
RootsChat Aristocrat
Posts: 2132
just resting for a while
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If you managed to follow the last tute, then this one should be a breeze. It is just one more way to use your levels to adjust colour and tone. Now! Instead of using the eye droppers, we will use those sliders to do our adjustment.
But first let’s talk about that graph that we call a histogram. In simple terms what it tells us is how much of a colour we have in the picture and where it is. So if we take the full width of the frame as representing a full range of a colour, and the graph only spans half of the frame then it means that we are missing 50% of that colour (it is a little more complex than that but let’s not do complex on here eh!)
To take that a step further the edges of the frame can be represented by the arrows at either end, the right hand arrow is white (representing pure colour), while the left hand one is black (representing absolute lack of colour). If this is the case then it isn’t difficult to see that if the graph doesn’t stretch as far as the edge (of which one is black and one white) then the picture does not contain that pure black or white. The question is though how do we get that black or white? Simple, we stretch the graph to reach the edges – or bring the edges in to meet the graph.
How? Open up the pic' that I have posted on this tute, then follow the last tute as far as opening the levels dialogue box: It doesn’t take a genius to realize that this pic’ is flat and lifeless – in fact there is no pure black or pure white and of course when we look at the histogram, there is the proof - the graph falls short at both ends.
If you take the sliders at each end of the histogram and slide them in towards the graph until they reach the point where the graph starts to rise, you should notice that the blacks and the whites begin to materialize.
Of course what you have done here is to adjust the composite of red, green and blue, which for most pictures would be absolutely fine. However for this pic’ it is still not really great. The reason being that if we looked at each of the three colours separately that colour’s graph would be different to the others.
Not a problem, because we can adjust each one of them separately. At the top of the levels dialogue box you will see a channels selector set at the rgb. Rather than worry about the rgb, select from the drop down menu each channel in turn and follow the above procedure of adjusting those sliders to meet the graph.
Most of the time you will find the above to be quite adequate, but there will be times you want to do a little more. Firstly you might like to try and “clip” the black or white point. this means taking the slider a little further than the beginning of the graph to bring a little more black or white into the pic’. This can safely be done where you have small areas of shadow that don’t matter if they turn completely black, or maybe some sky area or highlight that you don’t need to see the detail in. The other adjustment you may wish to play with is the arrow that you see in the centre of the graph, by sliding this to the left or right it will alter the contrast of the channel you are using.
Give it a try and dont be afraid to experiment
Denn
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Ford, Baines, Dixon, Platts, Peat, Proctor, Rotherforth, Dakin/Daykin, Sales, Beech, Hall, Parkin, Nightingale. ----- Harthill, Waleswood, Woodhouse-mill, Whitwell
South Yorkshire/Derbyshire/Nottinghamshire
Torremocha, Candog, Ramos, Reyes, Rodrigueus
-------Philippines --- Bohol
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Alangeo1
RootsChat Extra
Posts: 81
Census information Crown Copyright, from www.nationalarchives.gov.uk
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Hi Dennford
Just making myself known. Have been following this course with fascination. Thank you so much you have revolutionised my Phot techniques and enabled me to understand a package I have so far been unable to get to grips with. Thanky ou for all your efforts, keep going I am glued to the thread
Alan
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dennford
RootsChat Aristocrat
Posts: 2132
just resting for a while
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Alan, George and everyone else,
There is much to learn with photoshop (and similar programmes), so what we are doing here will only touch the surface. It is very difficult to know where to start with the tutes because there is no one part of photoshop that is of any more importance than another but little by little it will all come together.
I believe that although photoshop appears to be a complex prog', it's a bit like an ant eating an elephant - if he takes it one bite at a time - one day he will come to the realisation that it's nearly all gone.
The difference with photoshop of course that while we're eating away, those people at "Adobe" keep adding to it.
Anyhow I shall leave you to it,
Denn
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Ford, Baines, Dixon, Platts, Peat, Proctor, Rotherforth, Dakin/Daykin, Sales, Beech, Hall, Parkin, Nightingale. ----- Harthill, Waleswood, Woodhouse-mill, Whitwell
South Yorkshire/Derbyshire/Nottinghamshire
Torremocha, Candog, Ramos, Reyes, Rodrigueus
-------Philippines --- Bohol
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tomkin
RootsChat Aristocrat
Posts: 2647
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Hi Denn,
I think you have done enough and far more than enough.
Well Done mate. Next time I'm over the "Tops" I'll
drink a pint ( or two ) for you.
Tomkin 
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dennford
RootsChat Aristocrat
Posts: 2132
just resting for a while
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Hi Tomkin,
Your task is a s follows,
Sunday lunchtime
When the pubs open at 1200 you must drink one pint at he "Nags head" Edale.
Go over the top of Kinder Scout and have a second pint in the "Snake Inn".
Return back over "Kinder" and have a your third pint back at the "Nags" before it closes at for the Sunday lunch session.
Good luck
Denn
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Logged
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Ford, Baines, Dixon, Platts, Peat, Proctor, Rotherforth, Dakin/Daykin, Sales, Beech, Hall, Parkin, Nightingale. ----- Harthill, Waleswood, Woodhouse-mill, Whitwell
South Yorkshire/Derbyshire/Nottinghamshire
Torremocha, Candog, Ramos, Reyes, Rodrigueus
-------Philippines --- Bohol
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dennford
RootsChat Aristocrat
Posts: 2132
just resting for a while
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Sorry everyone else,
But Tomkin will understand that last post.
Denn
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Logged
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Ford, Baines, Dixon, Platts, Peat, Proctor, Rotherforth, Dakin/Daykin, Sales, Beech, Hall, Parkin, Nightingale. ----- Harthill, Waleswood, Woodhouse-mill, Whitwell
South Yorkshire/Derbyshire/Nottinghamshire
Torremocha, Candog, Ramos, Reyes, Rodrigueus
-------Philippines --- Bohol
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tomkin
RootsChat Aristocrat
Posts: 2647
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Yes Denn,
But Am I allowed to carry some six packs with me?
This walkings thirsty work tha' Nose.
Tomkin
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wendy47
RootsChat Aristocrat
Posts: 1538
My Wonderful & Funny Father
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Hi All
Just recieved into some old photos and the restorers have done a great job but I have so many I decided to have a look at the tutorials and WOW
Thank you for such detailed ones Denn.
We have Paintshop 7 but may aquire Photshop. You explain what everything does much simpler than the Indexes on these programmes!! Must have a go.
Thanks everyone
Wendy
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VEAL, PRICE, STURGE, BELLET, DREW, TAYLOR Som/Glos
COTTERELL, NAPPER, NASH, FLEETWOOD, HANDLEY, COLLINS Hereford
NASH, TYLER Warks, Kent
CROWE, REYNOLDS, BEARMAN Suflk/Essx/Middx
Abraham CARLSON/CHARLSON Sweden/E Ldn
COX Wilts
STILES, DORTON Middx, Surrey
"Fisher" HALLUM London? HANSTEY, MARSHALL Northumberland
ELDRIDGE, ALDRIDGE, STILES, DORTON Ldn RAGLESS, NYE Sussex
FEGAN, LOUGHLIN Down
CLAYTON SWEENY Cork
PROBABLE IMPOSSIBILITIES ARE TO BE PREFERRED TO IMPROBABLE POSSIBILITIES - ARISTOTLE
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Pages: 1 ... 4 5 [6]
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pilbara_levels_hist_sample.jpg
