* Item pictured for illustrative purposes only, actual item not pictured. See ‘Notes’ next to grade for included items.

Pentax 100mm F/4 SMC M Macro K Mount Manual Focus Lens {49}

Model #241954
  • $20.00

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New in box complete with manufacturer's USA warranty. Not previously owned or used.
Essentially new with no signs of use. In manufacturer's packaging with original accessories and instructions.
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Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of dings or blemishes. Glass may have slight blemishes but will not affect picture quality.
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Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or haze which could affect picture quality. Not covered under KEH warranty.
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
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* Item pictured for illustrative purposes only, actual item not pictured. See ‘Notes’ next to grade for included items.

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A lens that is considered a macro lens is one that has two main factors. The lens element is flatter than a normal lens and it has a focusing ring that allows closer focus than a normal lens. Most lenses of this type can reproduce an image at a ratio of 1:2. That means that you can have the image on the sensor or film that is ½ the size of the object in real life. Some have a 1:1 ration, which will put the exact real life size on the film or sensor. These lenses are made for a variety of uses. Nature photos of things like bugs and flowers are a popular use. Since the glass if flatter than a normal photo lens, it is best for taking photos of flat objects such as document, coins and stamps. Although this lens type was designed for these photography types, it can be used in normal photography as well. They don’t quite have the maximum f/stop of normal lenses, however.  The same rule applies to the macro lens as with others, the focal length is based on a full-frame film or digital camera and must be multiplied by a factor based on the sensor size. Macro lenses come in sizes generally of 50mm, 60mm, 70mm, 80mm, 100mm, 180mm and sometimes higher or lower. Look for the word “macro” in the description.  There are a few true zoom macros, but on zoom lenses if it shows macro, it means that you can focus closer than typically a similar lens without macro. 

Brand Name Pentax
Filter Size 49mm
Focus Type Manual focus (only)
Lens Mount Pentax K (SMC, SMC-M)
Lens Type Short Tele / Portrait
Max Focal Length 100mm
Min Focal Length 100mm