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Tominon 127mm Sweet Spot @ F11
Hi,
I took shots at f11, f8, f5.6, and f4.5. Turns out, f11 is the sharpest aperture for this lens, even a tiny bit sharper than f16. f22 was way blurry. I might try renting the G-Claron 150mm again, and try more apertures, to see if this would be worth the extra money. Like i said, f16 looked bad on the G-Claron, so maybe you really have to stop down with this one. If the G-claron really isn't much better, i might consider the Tominon. Slick |
#2
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Tominon 127mm Sweet Spot @ F11
Turns out, f11 is the sharpest aperture for this lens, even a tiny bit
sharper than f16. f22 was way blurry. f22 was way blurry. I might try renting the G-Claron 150mm again, and try more apertures, to see if this would be worth the extra money. Like i said, f16 looked bad on the G-Claron, so maybe you really have to stop down with this one. "Blurry" and "bad" shots with lenses generally known to be good for copy work leads me to suspect other problems. Are you using a rock-steady tripod? Are you using a cable release? Are you allowing a few seconds for the camera to stabilize after pulling the dark slide? I'd like to rule out camera shake, before ruling out lenses with good reputations. Good luck. ...pt ------------------------------- Business/Communications start at http://www.PhilipTobias.com. Grow your business using my technical and marketing communications - Effective writing, graphic design, multimedia, photos, and Web sites. |
#3
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Tominon 127mm Sweet Spot @ F11
Phil Tobias wrote:
"Blurry" and "bad" shots with lenses generally known to be good for copy work leads me to suspect other problems. Or a bad rental lens.. -- Stacey |
#4
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Tominon 127mm Sweet Spot @ F11
On 2/12/2004 9:15 PM Stacey spake thus:
Phil Tobias wrote: "Blurry" and "bad" shots with lenses generally known to be good for copy work leads me to suspect other problems. Or a bad rental lens.. From the impeccable firm of Keeble & Shuchat? Heaven forbid! -- It's fun to demonize the neo-cons and rejoice in their discomfiture, but don't make the mistake of thinking US foreign policy was set by Norman Podhoretz or William Kristol. They're the clowns capering about in front of the donkey and the elephant. The donkey says the UN should clean up after them, and the elephant now says the donkey may have a point. Somebody has come out with a dustpan and broom. - Alexander Cockburn, _CounterPunch_ (http://www.counterpunch.org), 9/17/03 |
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Tominon 127mm Sweet Spot @ F11
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#6
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Tominon 127mm Sweet Spot @ F11
Stacey wrote in message ...
Phil Tobias wrote: "Blurry" and "bad" shots with lenses generally known to be good for copy work leads me to suspect other problems. Or a bad rental lens.. Maybe.... S. |
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Tominon 127mm Sweet Spot @ F11
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#8
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Tominon 127mm Sweet Spot @ F11
And i'm very paranoid about not moving the cable too much when i depress the
lever to keep the shutter open for the few seconds. With an exposure of a "few seconds," it would be easy to inadvertently get some blurriness due to camera or subject movement. If the lens is sharp at similar apertures, but blurry at apertures requiring a longer exposure, movement seems a likely suspect. Try shooting one sheet at the same aperture outdoors, where you can use a high enough shutter speed to totally rule out movement as the problem. To help minimize movement indoors, if not using electronic flash, you could try covering the lens when the shutter opens and closes. When you first release the shutter on "B" setting with your cable release, hold the dark slide in front of the lens for a couple seconds, then move it away to uncover your lens. Reverse this procedure before completing the long exposure. This can help reduce any additional movement introduced by firing the shutter. A rock-solid tripod and careful technique (or electronic flash lighting) can probably eliminate this extra care. Good luck. ...pt PS: Some carpeted floors are also less then steady. Especially if you're bouncing around. ------------------------------- Business/Communications start at http://www.PhilipTobias.com. Grow your business using my technical and marketing communications - Effective writing, graphic design, multimedia, photos, and Web sites. |
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