Scanning Slildes vs Color Negatives

[Pete B]

The tutorial you posted was mine, and isn't forcing you to 'resort' to anything

I didn't mean it to sound disparaging, I actually like the simplicity of the routine.

The image you posted has a couple of issues. Firstly it had a Adobe sRGB profile embedded, which means it looks terrible to non profile aware browsers — on my Mac (profile aware) it just looked Red.

How do I find out what profile is embedded? When I look where I think the info should be, Photoshop tells me it's sRGB.

There is also a little posterization probably due to white point clipping on the mans hat and woman's left shoulder.
(I hope you don't mind me posting the image–I use it only for illustrative purposes)

Not at all.
The posterisation may be because I downloaded it of another site's thread instead of finding the original

Pete

 

[Pete B]

That. I never got good color with VueScan nor Silverfast, but doing a RAW scan with these and converting them with ColorPerfect, I get SUPERB colors:

classic Portra 400:

Jan / 90mm f2.8 Sonnar / Contax G2 von kanzlr auf Flickr

Very nice. Perhaps you could do a tutorial thread.
Pete

 

[kanzlr]

Thanks. I could, but it is really easy. Setup VueScan like the colorperfect homepage says you should, open the TIFF in Photoshop and chose the default Portra profile in colorperfect.

thats, basically, it. I like to chose a black and white point too, to get the perfect balance, but that again is very easy, just a click with the appropriately named colorperfect tool 🙂

 

[Pete B]

Still, it would be nice to see it. I sometimes wonder if people have a different UI to mine 😀
I did a quick thread about it here:
http://www.l-camera-forum.com/leica-forum/film-forum/172106-colorperfect.html#post1644424
Pete

 

[Photo_Smith]

How do I find out what profile is embedded? When I look where I think the info should be, Photoshop tells me it's sRGB.

Pete

It should tell you when you save for jpg in the dialogue box with the compression slider.
While in Photoshop you go to edit>convert to profile it will tell you what the profile is and you can choose the correct destination one which should for the web be sRGB IEC61966-2 or none at all.

 

[Pete B]

While in Photoshop you go to edit>convert to profile it will tell you what the profile is and you can choose the correct destination one which should for the web be sRGB IEC61966-2 or none at all.

I get this:



How will I know if Adobe sRGB is embedded? It says Epson sRGB.
Pete

 

[Photo_Smith]

Pete
I edited the top one the colour perfect one. You're showing me the bottom one, the Epson which has the generic Epson profile.
The top one shows this

An image that is aRGB like that will display poorly on non colour aware browsers.
I would make sure it's sRGB IEC61966-2.1 for the web.

 

[Pete B]

Derr, oh yes. I didn't think to look at the other one 🙄 😀
Pete

 

[Photo_Smith]

🙂
Not your fault I should have mentioned...

What i intend to do is a workflow on my blog for Silverfast and Vuescan to complement the existing Epson one.
It may be a simple one based upon the V500 as I have software all three for that model; and as some people here seem to struggle with scanning and mask removal from colour negative it may help those people.
I wouldn't worry Pete in your case your scans look OK (I checked out your Flickr) the example you posted in this thread was an easy fix–then again everything is easy when you know how. 🙂

 

[gustavoAvila]

Same here. Not only that but I also find myself disappointed time and time again when I scan a slide. The scans never have all the information that I can see on a light table and there's always some minor color shift that I have to correct.

I concur with this observation, it is a rare occurence when a colour slide (or negative) does NOT require correction.

Remember that colour film is "balanced" for a middle latitude, sunny mid-summer day at noon. Obviously, this white balance "preset" is inappropriate for most exposures!

Since film can only handle one colour temperature, it has always been necessary to correct colour casts in post processing. (For colour prints, this task was generally performed by the minilab operator or custom printer. For projected slides, the issue was completely ignored!)

In any case, having to remove colour casts is nothing new. The only thing that has changed are our expectations and toolsets!