MD CELTIC LENSES
The MD Celtic line was a less expensive alternative to the MD Rokkor-X lenses, designed to compete with third-party lenses. Prior to the MC Rokkor-X line, Minolta lenses used an achromatic coating on its lenses. This provides more than adequate protection against flare in most situations. The MD Celtic line continued to use the older coating which helped reduce the cost. They also cut a few other corners. For example, the red alignment bump of the MD Rokkor-X line is replaced with a painted red dot, DOF buttons are not included, lens cases and hoods were accessories, the warranty period was shorter, the focal length is not painted on the lens barrel, and the lens caps are less-expensive, push-on types.
These lenses were designed for cameras that have TTL meters. To use, the aperture and shutter speed dials are adjusted until the needles in the viewfinder match, and the exposure is taken. These lenses will work fine on earlier cameras. But a few of the newest MD lenses will not fully function on the oldest cameras (without modification) since the MD pin is a tiny bit too long. Specifically, with earlier SR models with an MD lens, the minimum f-stop cannot be selected because the MD lug will bind on or strike the body's front cover or one of the screws securing it. All other f-stops can be selected. This is true of the SR-1, SR-2, SR-3. SR-7, SR-1s, and SR-M used "as they are". However, all f-stops on MD lenses can be used on any SR-1s, SR-M, SR-1, or SR-7 bodies with serial numbers over 2500000 by having the screw changed. While Minolta no longer offers factory replacement of the screw, any repair shop should have an assorment of fine-threaded screws and be able to match one with a more flush head (or you can file the original screw-head down yourself).
|FOCAL LENGTH||f-STOP RANGE||LENS INSCRIPTION||VIEW||DESIGN||FILTER THREAD||DIAPHRAGM||MC||MD||CLOSE FOCUS||SIZE||WEIGHT|
|28mm||2.8-22||MINOLTA LENS MADE IN JAPAN MD MINOLTA CELTIC 1:2.8 f=28mm||75||7/7||49||auto||yes||yes||1'||2.5"x1.7"||6.4oz.|
|35mm||2.8-22||MINOLTA LENS MADE IN JAPAN MD MINOLTA CELTIC 1:2.8 f=35mm||63||7/6||55||auto||yes||yes||1'||2.5"x1.8"||7.6oz.|
|135mm||3.5-22||MINOLTA LENS MADE IN JAPAN MD MINOLTA CELTIC 1:3.5 f=135mm||18||5/5||55||auto||yes||yes||4.9'||2.5"x2.9"||9.3oz.|
|135mm||3.5-22||MINOLTA LENS MADE IN JAPAN MD MINOLTA CELTIC 1:3.5 f=135mm||18||5/5||49||auto||yes||yes||4.9'||2.5"x2.9"||9.3oz.|
|135mm||2.8-22||MINOLTA LENS MADE IN JAPAN MD MINOLTA CELTIC 1:2.8 f=135mm||18||5/5||55||auto||yes||yes||5'||2.5"x3.2"||12.9oz.|
|200mm||4-22||MINOLTA LENS MADE IN JAPAN MD MINOLTA CELTIC 1:4 f=200mm||12.5||5/5||55||auto||yes||yes||8'||2.5"x5.1"||1lbs. 2oz.|
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