pentajigga said:
i have a 22" cinema that i use and love.. i bought a 23" and the res at native produced text and icons (etc) that were too small for me so i sold it and switched back to my 22".
how can i discern the way the 30" will be in this regard.?
Ask and ye shall receive
🙂 I know what you mean about the large type on the old 22"--I liked that too. Bascially, the 30" will have EVEN smaller type than the 23". They may be "around" 100 DPI each, but in fact they do vary.
I keep an updated list of full DPI/res specs on ALL Apple displays.
My premise in this list is that display size in inches is NOT the key factor. It's just a result of the two REAL important factors: DPI and workspace/windowing area. Two eMacs side by side will both have the same screen size in inches, but the one at 1024x768 has less area for windows than the one set to 1280x960. But the 1024x768 has lower DPI, and lower DPI means bigger pixels, and thus bigger more readable text. As someone who uses computers for long hours, that's a plus for my eyes!
Similarly, two LCDs of similar size (22" and 23" say) may have VERY different windowing areas available. That 23" HD display is MUCH larger in terms of number of pixels: the pixels are smaller than the 22". But thus, less readable on one sense, especially when sitting comfortably away from the screen.
Some people want as many pixels crammed in as they can: more room for palettes. That seems to be the trend in displays now. But others want to avoid high DPIs with teeny tiny text/pixels. It depends what you're after... hope this list helps someone!
I've compared the native (= sharp) resolution of all the recent Mac LCDs, plus a few different modes for CRT iMacs and eMacs. The 23" (and possibly 30") Cinema HD display is unique in that has TWO totally sharp "native" resolutions: you can double the DPI so that every dot is actually a group of four. (Those are some BIG pixels. And "best for LCD" font smoothing doesn't work on doubled pixels.)
Here are all Apple display options in the order of lowest DPI (largest type) to highest DPI (tiniest type). To compare pixel areas, I've given each one's size in megapixels (H x V / 1 million). A display with twice the megapixels can fit twice the windows and tools. (DPI is rounded to the nearest pixel. HxV inch sizes are approximate within one-tenth of an inch.) This list does NOT give brightness/contrast info, or viewing angle ranges--so check out displays in person before buying if you can!
I've also given (in parentheses) the actual size of the viewing rectangle, which people often ask about. (All calculated from specs, not measured.) For CRTs, that size means the image--not the whole screen with borders.
23" Cinema HD Display (doubled to 960x600 in 19.6x12.2"):
49 DPI
.58 megapixels
30" (29.7" veiwable) Cinema Display (doubled--if permitted--to 1280x800 in 25.2x15.7"):
51 DPI
1.02 megapixels
eMac 15.5"-viewable CRT (at 640x480 in 12.4x9.3"):
52 DPI
.31 megapixels
G3 iMac CRT 13.8"-viewable (at 640x480 in 11.1x8.3"):
58 DPI
.31 megapixels
eMac 15.5"-viewable CRT (at 800x600 in 12.4x9.3"):
65 DPI
.48 megapixels
Mac Plus or SE 9" CRT (512x384 in 7.1x5.3"):
72 DPI
.2 megapixels
G3 iMac CRT 13.8"-viewable (at 800x600 in 11.1x8.3"):
72 DPI
.48 megapixels
eMac 15.5"-viewable CRT (at 1024x768 in 12.4x9.3"):
83 DPI
.79 megapixels
Original 12.1" iBook (800x600 in 9.6x7.2"):
83 DPI
.48 megapixels
G4 iMac 15" or 15" Studio Display (1024x768 in 12x9"):
85 DPI
.79 megapixels
22" Cinema Display (1600x1024 in 18.6x11.9"):
86 DPI
1.92 megapixels
14" iBook or PowerBook G3 (1024x768 in 11.3x8.4"):
91 DPI
.79 megapixels
Original Titanium PowerBook G4 15.2" (1152x768 in 12.7x8.4"):
91 DPI
.88 megapixels
eMac 15.5"-viewable CRT (at 1152x864 in 12.4x9.3"):
93 DPI
1 megapixel
G3 iMac CRT 13.8"-viewable (at 1024x768 in 11.1x8.3"):
93 DPI
.79 megapixels
17" Studio Display (1280x1024 in 13.3x10.7"):
96 DPI
1.31 megapixels
23" Cinema HD Display (1920x1200 in 19.6x12.2"):
98 DPI
2.3 megapixels
20" Cinema Display (1680x1050 in 17x10.6"):
99 DPI
1.76 megapixels
17" iMac or Aluminum PowerBook (1440x900 in 14.4x9"):
100 DPI
1.3 megapixels
15.2" Aluminum PowerBook or updated Titanium (1280x854 in 12.7x8.4"):
101 DPI
1.09 megapixels
iPod 2" (160x128 in 1.56x1.25"): (MINI ??????)
102 DPI
.02 megapixels
30" (29.7" veiwable) Cinema Display (2560x1600 in 25.2x15.7"):
102 DPI
4.01 megapixels
eMac 15.5"-viewable CRT (at 1280x960 in 12.4x9.3"):
103 DPI
1.23 megapixels
12.1" iBook or Aluminum PowerBook (1024x768 in 9.7x7.3"):
106 DPI
.79 megapixels
Speaking for myself, recent DPIs (above 90) can get hard on my eyes after long use--but with a bright enough screen, I'm fine with my AlBook's 102. Yet I prefer someting larger than .79 megapixels (1024x768) for fitting windows and palettes. I went with an eMac (multiple resolutions) so I don't have to choose, but I did miss LCD sharpness until I got the AlBook.
Also note that LCDs can effectively triple the horizontal resolution for text (at the expense of minor CRT-like color fringing) using subpixel anti-aliasing. To activate that, in System Preferences, choose any smoothing setting other than "best for CRT" and then log out and back in. All your text will be less blocky--notice the V in View, for instance. To turn the effect back off temporarily and compare, switch to Thousands of colors. (Since it only works in Millions.)
By the way, here are formulas for DPI and viewable dimensions that will work even when comparing widescreen vs. normal-ratio displays:
H = horizontal pixels
V = vertical pixels
D = diagonal (viewable) inches
DPI = sq.root( H^2 + V^2 ) / D
Horizontal inches = H / DPI
Vertical inches = V / DPI
Megapixels = H x V / 1,000,000
Now you know... more than you wanted
😀