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Introduction:

The best by a long way in ability to focus very close are the Alpen Apex 8x32, the Backcountry 8x25 Pocket Roof Prism Binocular by Columbia and the Ranger SRT 8x32 Binocular by Eagle Optics, as well as the Zumell Signature 10x42 and Hawke Endurance Close Focus 10x42, the latter two not compact, but normal binoculars. Their close focus distance is less than 4 feet(1.2 meters), which is very, very good and makes them capable of opening the world of insects to the viewer.

If searching for words to describe the special ability of a binocular to focus scarpe manolo blahnik close, what words will appropriately describe the Pentax Papilio, with its ability to get an object as close as 18 inches (less than half a meter) in focus?

The problem with focusing really close:
Binoculars are actually two telescopes working in unison. Each telescope delivers its own image to the viewer. So the viewer receivers two distinct images through each eyepiece. As long as the viewer is focusing on an object in the distance, he perceives these two images as one. But integrating the two images into one becomes more difficult the closer the object he is viewing. Eventually it is no more possible. There is a critical distance at which the two images from the telescopes overlap naturally. This is where most binoculars have their close focus limit. As said above, this could be a close as 1 meter. On the downside it has to be mentioned that the two images are usually not completely integrated into one perfect image.
How did Pentax solve this problem?

Pentax knew they had to think out of the box to solve this problem and their answer was CLOSE: Convergent Lens Optical System Engineering. The key to this technology is the fact that the objective lenses and the eyepieces are no longer in the same housing; the objective lenses are placed in a solid housing separated from the eyepieces. Adjusting the two telescopes of a binocular according to the interpupillary distance of the user has no effect on the position of the big lenses at the front; manolo blahnik scarpe are in a separate (solid) housing and stay just where they are.

For focusing you use the knob at the top between the eyepieces. The instrument focuses by moving the objective lenses not further or closer to your eyes, but by moving the lenses closer or further apart from one another.

Ever noticed that the objective lenses move further away or closer (or the eyepieces) when you focus with an ordinary pair of binoculars? Well, with the Pentax Papilio the objective lenses themselves converge on one another within the solid housing when you're focusing. Using an ordinary pair of binoculars, focus on an object at a distance - no problem; now get closer; still no problem; now real close by and you'll see that the two images do not overlap completely. Then do that with the Pentax Papilio; no problem at all! Since the two lenses move closer to one another, converging the two images is no problem for the Papilio - not even as close as 46 cm! So you can still see the object with both eyes as one integrated image - and that happens without any eyestrain!

As you focus closer and closer, each eye's line of sight converges with the other's, so you're constantly looking at the same object with both eyes.

Dimensions
The Pentax Papilio is a reverse porro; it is a compact binocular (4 inches x 4.5 inches, objective lenses 21 mm) and lightweight (10.5 ounces).

Different models
The two models on offer have the same apertures of 21 millimeters, but the power differs: 6.5x and 8.5x.

Different uses:
"Papilio" is the Latin word for "butterfly", so Pentax clearly developed this instrument as a specialist instruments for super, super close viewing of insects like butterflies. As far as this is concerned, it is in a class of its own. This does not mean manolo blahnik italia normal viewing is beyond its capabilities; on the contrary. It can be used as a normal compact binocular - which all have small objective lenses - as well.