The phrase "a poor lens" is correct and usable in written English.
It can be used to describe a lens that does not provide clear or accurate images, or metaphorically to refer to a flawed perspective or viewpoint.
Example: "Using a poor lens to analyze the situation can lead to misunderstandings and incorrect conclusions."
Alternatives: "a faulty lens" or "an inadequate lens".
Even while the bloody civil war in Syria threatens to engulf parts of Lebanon and Iraq, Federic M. Wehrey *02, a senior associate in the Middle East Program at the Carnegie Endowment for International Peace, believes that sectarianism is a poor lens through which to view the region's tensions.
Stopped down to f/8 or so, a decent lens will give as good image quality as a great lens (better than either wide open), and a poor lens will give image quality more than acceptable for snapshots.
Infections are more likely if there is poor lens hygiene [10].
Predisposing factor for an atypical presentation as seen in this case could be due to the contact lens wear, for poor fitting lenses, poor lens hygiene and micro-trauma may all lead to the reactivation of herpetic keratitis.
Subsequently, 66 patients were identified from March 2005-February 2006; the characteristics in common among these patients were the use of ReNu with MoistureLoc solution and poor lens hygiene [ 10].
Poor technique such as camera shake, high-ISO noise or smoothing to get rid of it and poor lens quality (which is common in super-small cameras but can be mitigated with small apertures) reduces the level of actual detail far below the number of pixels recorded.
They are also optically excellent, better than most zoom lenses (not that it matters with the general impreciseness of this setup) and fairly light, but check that the aperture can be adjusted or is at least wide-open when the lens isn't mounted (a Canon FD lens would be a poor choice for this reason).
Using objective lenses with a poor z-resolution together with a thin illuminating sheet of light, the z-resolution is mainly determined by the illumination beam.
In apposition eyes, on the other hand, the aperture consists of a single lens resulting in a poor photon catch and unreliable vision in dim light.
Look for a poor "RB" etching on one of the lenses.
These lenses with large field of view (more than 1 cm2) all have a low numerical aperture (NA) and a poor z-resolution in common.
