focus

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bring (something) into focus

1. To make an adjustment so that a viewed object can be seen clearly, as with instruments that use lenses, or by digital or other means on a screen. You need to bring the vase of flowers into focus so that it doesn't come out blurry in the pictures. The eye doctor adjusted his machine and brought the eye chart into focus for me. Can you bring the footage into focus so we can see the perpetrator's face?
2. To cause something to be better or more clearly understood or seen in a new perspective. Her passionate speech about the environment really brought the importance of conservation efforts into focus.
See also: bring, focus

focus on (someone or something)

1. To direct and adjust the lens of something so that one can see through it clearly. I can't seem to focus the camera on the tree—it's still all blurry.
2. To center on or be dedicated to something in particular. Have you decided which topics the meeting will focus on?
3. To cause someone or something to center on or be dedicated to something in particular. In this usage, a noun or pronoun can be used between "focus" and "on." I think we need still need to focus our efforts on fundraising right now.
See also: focus, on

out of focus

1. Not able to be seen with clear, sharp definition. Someone go tell them that the film is out of focus! I don't need my glasses all the time, but everything is slightly out of focus without them.
2. Not able to produce a clear, sharp image. Who's been messing with my telescope? It's completely out of focus! I've tried adjusting it over and over again, but the projector is still out of focus.
3. Not clearly perceived, understood, or explained. Let's try to bring the discussion back to the topic at hand, because I think things are getting out of focus. As the professor continued rambling on, the point of her lecture started to get out of focus.
See also: focus, of, out

bring something into focus

 
1. Lit. to make something seen through lenses sharply visible. I adjusted the binoculars until I brought the bird sharply into focus. The flowers were brought into focus by adjusting the controls.
2. Fig. to make something clear and understandable. I think we will have a better discussion of the problem if you will say a few words to bring it more sharply into focus. Please try to bring your major point into focus earlier in the essay.
See also: bring, focus

focus on someone or something

 
1. Lit. to aim and adjust a lens (including the lens in the eye) onto someone or something. I focused on the flower and pressed the shutter release. I focused on Fred and snapped just as he moved.
2. Fig. to dwell on the subject of someone or something. Let's focus on the question of the electric bill, if you don't mind. Let us focus on Fred and discuss his progress.
See also: focus, on

focus something on someone or something

 
1. Lit. to aim a lens at someone or something and adjust the lens for clarity. I focused the binoculars on the bird and stood there in awe at its beauty. He focused the camera on Jane and snapped the shutter.
2. Fig. to direct attention to someone or something. Could we please focus the discussion on the matter at hand for a few moments? Let's focus our attention on Tom and discuss his achievements so far.
See also: focus, on

*in focus

 
1. Lit. [of an image] seen clearly and sharply. (*Typically: be ~; come [into] ~; get [into] ~; get something [into] ~.) I have the slide in focus and can see the bacteria clearly.
2. Lit. [for optics, such as lenses, or an optical device, such as a microscope] to be aligned to allow something to be seen clearly and sharply. I've adjusted the telescope; Mars is now in focus.
3. Fig. [of problems, solutions, appraisals of people or things] perceived or understood clearly. (*Typically: be ~; get [into] ~; get something [into] ~.) Now that things are in focus, I feel better about the world.
See also: focus

*out of focus

blurred or fuzzy; seen indistinctly. (*Typically: be ~; get ~; go ~.) What I saw through the binoculars was sort of out of focus. The scene was out of focus.
See also: focus, of, out

focus on

v.
1. To orient or adjust something toward some particular point or thing: I focused the camera on the car across the street.
2. To direct someone or something at a particular point or purpose: The company director wanted to focus the staff's attention on finding a solution to the problem.
3. To be directed at some particular point or purpose: The manager focused on the sales force's performance.
See also: focus, on
References in periodicals archive ?
The distance from the back surface of the focuser to the focal plane is 66 mm, and the focuser has 32 mm of travel.
A 2-inch focuser, a 2-inch star diagonal, and a 1.25-inch adapter ensure the widest choice of eyepieces; a 25-mm (26x) is supplied.
A 90[degrees] mirror star diagonal, 6 x 30 finder, two 1.25-inch eyepieces--10 mm (60x) and 25 mm (24x)--and a 2-inch focuser are included.
There were, however, a few minor deficiencies with the scope's focuser. While the 10-to-l fine-focus knob is a boon for achieving sharp images, this particular telescope's fine focus action exhibited some backlash.
Astrophotographers with beefy mounts, rigid OTAs, and robust focusers should have the fewest concerns over the camera's weight.
At first, the focuser exhibited a fair degree of image shift, but this was largely eliminated by tightening the two tiny hex screws on the focuser barrel that serve to add tension.
After you've made your cutouts and glued your felt wings on, spray-paint the whole works flat black, using a paint that's designed for plastic, and mount it on your focuser. The shield is held in place by the 2- to 1 1/4" adapter, or by a 2" eyepiece itself (or a Paracorr if you use one.) You will need to replace the set screws with longer ones that extend outward far enough to be accessible behind the bowl.
Because of the focuser's limited travel, switching eyepieces, adding a star diagonal, or using a Barlow lens for increased magnification often required adding or subtracting adapters from the setup.
With the optional Starlight Instruments 3-inch Feather Touch focuser, the tube measures 32 inches long with the dew shield retracted, and 38 inches fully extended.
This is more than enough room to fit even complex imaging setups that include, say, a flip mirror, off-axis guider, motorized focuser, filter wheel, and camera.
Orion Telescopes & Binoculars introduces the 60mm Multi-Use Guide Scope with Helical Focuser ($219.99).
Since the telescope is designed primarily for photography, key to its performance is the quality of the focuser. The Quattros use a Crayford-style focuser with a friction drive and 10:1 fine-speed motion.
Doug's telescopes have as many homemade parts as possible, from the primary mirrors to the spiders, mirror mounts, finders, and focusers. The focusers in particular show his simple, straightforward approach to telescope making.
Starlight Instruments announces two 1 1/4-inch Feather Touch focusers. The FTF1575BCR ($249) brings the uncompromising quality of the Feather Touch custom Crayford-style focusers with brake system to telescopes with limited field of views.
These powered, backwards-compatible USB 3.0 hubs permit the use of many imaging accessories powered through a USB connection, including filter wheels, focusers, CCD cameras, and dew prevention devices.