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  • 0 posts edited
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  • 18 votes cast
Aug
29
comment Is it time for us to let go of unsharp mask?
What on earth makes you think that "counteracting lens blurring" is the primary goal of local contrast enhancement/exaggeration? Yes, there are alternate techniques for doing more-or-less the same thing based on more selective blurring (such as Surface Blur), and methods that significantly suppress ringing (as offered by various plugins), but don't confuse the aim of contrast enhancement with deconvolution, etc.; they serve entirely different purposes.
Aug
29
awarded  Critic
Aug
28
comment Photoshop: high pass filter or sharpening filter?
No, the unsharp mask technique comes straight out of the darkroom, and was originally created using an unsharp thin positive sandwiched with the negative (either in the enlarger negative stage or in a contact print frame). (Or the other way around with reversal film, of course.) It is and always was a sharpening technique, but it has never involved a sharp mask. There is no misnomer here, just a failure to understand why it's called what it's called.
Aug
28
comment Photoshop - extracting a reflection on a car
Blending options would probably go a long way too for retaining specularity and hard shadow cutlines.
Aug
28
comment Are portfolios overrated?
It's probably worth pointing out that "tear sheets" with some currency (that is, not too terribly dated) are usually part and parcel of a portfolio; it's not all spec work and mock-ups.
Aug
23
comment How do verify colors in graphics intensive webpages on CRT screen when developing only on LCD screen?
The few CRTs that still exist are likely to be low-end monitors that are way out of calibration (and probably need a good degaussing) or prized old component-input special-purpose graphics monitors that would be not much different (except in resolution and the ability to adjust it) from a good modern LCD. There is a cure for the gradation of your laptop's monitor, and that's to get an IPS-type external LCD monitor (one that's good enough for web front end development is relatively cheap; high bit depth and critical calibration/LUTs is more about going to print accurately).
Aug
18
comment How to create or take a large photograph for displays? Is it worth it?
1000€ isn't even entry-level at this level. (It's not particularly expensive for a small-format camera, either, unless you're looking at a moderate-speed 50mm prime.) Both Schneider and Rodenstock make lenses that are much better than anything you could get at that price (at an order of magnitude greater cost), and the several of the Fujinons that Hasselblad uses in their H-series will easily use the full resolution of the 200MS backs at middling apertures.
Aug
17
comment How to create or take a large photograph for displays? Is it worth it?
Medium format cameras (backs, actually) will allow a single-exposure capture of up to 80 MP at a 4:3 aspect ratio (the PhaseOne IQ series), which translates to about 93-ish PPI natively at the desired display size (modulo crop and bleed). Up-rezzing by a small amount (under 50%) using bicubic and deconvolving is essentially invisible. There's not much to gain going to film (up to 8x10, at least) - scanning will get you more pixels, but it won't get you more detail unless you're doing a process shot (true apochromat lens with no appreciable depth of field requirement).
Aug
16
comment Why does Photoshop want to save JPEG as quality '10' out of 12?
That only applies to level 7; there's a big change in algorithm between 6 and 7, and 7 turns out to be less good than 6. (Or, I suppose, 6 is anomalously better than 7 because it's the best-case of a worse process rather then the worst-case of a better one.) The only problem with 12 (or 11) is file size; it's essentially incurring the loss inherent in chunking and diffing the image without offering much in the way of data compression. 12 is better than 10, but not by a large enough margin for the file size cost you pay.
Aug
14
comment How to beautify images without decreasing sharpness?
Note: deconvolution is not the same thing as local contrast enhancement; they accomplish quite different results, and Smart Sharpen is not a substitute for either high pass or unsharp mask sharpening. Nor is Levels an adequate substitute for a curve or curve set (which will allow you to put contrast where you need it). We didn't just change paper grades in the darkroom (even assuming you got the negative "perfect" using the Zone System); there's no good reason to step backwards when you have the whole panoply of tools in Photoshop at your disposal.
Aug
13
comment How yellow color is formed using RGB color model?
Even when talking about mixing paints, red, blue and yellow is a vast oversimplification (although there are some synthetic pigments that come close enough for primary school art classes). We generally use a scarlet and a crimson for "red", a lemon and something more like a gamboge for "yellow", and several blues (ultramarine, cobalt, cerulean and phthalo or Prussian), depending on the mixed colour we are trying to achieve. CMYK covers most of the mixtures fairly well with a smaller number of pigments.
Aug
8
awarded  Yearling
Aug
8
comment Replicate the Invisible Black Background on Photoshop
I's say you don't "get it" - it's a phrase an instructor (or someone explaining how a photograph was produced) would use: The environment in which I had to shoot this portrait was butt-ugly, so I pulled out my invisible black background. Every trade has its idioms.
Aug
8
comment Replicate the Invisible Black Background on Photoshop
@Scott - The "background" that's invisible is a seamless/canvas/muslin (or cove) that doesn't exist - in other words, a bit of (seemingly necessary) equipment that isn't there because you can independently control the ambient and flash exposures.
Aug
5
answered How to make full color brush in photoshop?
Jul
30
comment An orthographic projection has the same front and top view
Or a cork/plug/bung, which would explain the circle bit.
Jul
16
comment How to make a .PNG that shows one image on a black background and a different image on a white background?
All you need to do is grab an image, preferably a good black-and-white conversion, although colour will work too if you bump up the contrast since masks are automatically greyscale, and paste it into a layer mask you create on a solid white layer that lives above your black logo (or other shape). It really doesn't get any easier. Then save as a PNG with full transparency.
Jul
16
answered How to make a .PNG that shows one image on a black background and a different image on a white background?
Jul
6
comment In Word, what does “single” line spacing actually mean?
Not so much "named it differently" as used the terminology people were used to. It was also in WordStar and WordPerfect, as well as in dedicated word processors like the Wang machines.
Jul
6
comment In Word, what does “single” line spacing actually mean?
It's where the term comes from, and it's what people were used to before graphic fonts were in common use, even in terminal-mode word processors.