Forum Übersicht - SR-Bajonett-Objektive » Minolta MC Celtic 2.8/135mm => Fremdfabrikat?

Ciao zäme

Als "Beifang" ist mir ein "MC Minolta Celtic 1:2.8 f=135mm" zugeflogen. Auf den ersten Blick kam es mir vor wie ein Fremdfabrikat eines Drittanbieters, aber vorne ist eindeutig die genannte Bezeichnung eingraviert. Zudem figuriert das Objektiv - wie es sich gehört - als Nr. 171 auf Dennis' Liste. Zwei Bilder sind angehängt; das MC Celtic ist jeweils zusammen mit dem sechslinsigen MC 2.8/135mm und dem vielrlinsigen MD 2.8/135mm abgebildet.

Das Objektiv ist extrem schwer (ca. 620g) und robust gebaut.

Trotzdem: Zahlreiche kleine Details sind anders als bei Minolta-Objektiven aus der Zeit - so die Gravuren, der Blendenring und natürlich der Griffgummi. Das Objektiv sieht für mich nach wie vor wie ein Fremdobjektiv aus.

Hat Minolta USA da einfach bei einem Billiganbieter / Fremdhersteller eine Ladung 135er geordert und sie mit dem Minolta-Schriftzug versehen ?

Und: kennt jemand die Leistung dieses Objektivs?

Gr Steve

Hallo Steve,

das ist schon richtig so, schau mal da:

http://minolta.rokkor.de/celticlenses.htm

BG Hans

ZITAT(Hans-J. @ 2009-07-09, 23:22) Hallo Steve,

das ist schon richtig so, schau mal da:

http://minolta.rokkor.de/celticlenses.htm

BG Hans[/quote]

Das ist aber ein reine Aufzählung, keine Erklärung, woher die kommen. Oder habe ich da etwas übersehen?

http://www.subclub.org/minman/mcceltic.htm
http://www.subclub.org/minman/13528.htm

Demnach gab es sowohl eine 5/5- als auch eine 4/4-Konstruktion des Minolta Celtic 2,8/135mm.

Viele Grüße,

Matthias

ZITAT(clintup @ 2009-07-09, 22:41) Das ist aber ein reine Aufzählung, keine Erklärung, woher die kommen. Oder habe ich da etwas übersehen?[/quote]

Nun interessiert es mich noch einmal mehr; denn jetzt habe ich ein MD Celtic 200/4 (inkl. GeLi) als Beifang erhalten. Also: Fremdhersteller für Minolta oder minoltaeigene Sonderserie? Und wie ist die Qualität im Vergleich zu Non-Celtic-Minoltas?

ZITATThe MC Celtic line (1972-1977) was a less expensive alternative to the MC Rokkor-X lenses, designed to compete with third-party lenses. Prior to the Rokkor-X line, Minolta lenses used an achromatic coating on its lenses. This provides more than adequate protection against flare in most situations. The MC 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 MC 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. Cutting these corners, cut the sales price quite a bit. The original line of Celtic lenses was quite extensive, and even included a macro lens.

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 and later cameras. Quelle: http://members.aol.com/xkaes/slrlens.htm[/quote]



ZITATThe MD Celtic line ( 1977-1981) 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).[/quote]

Für die späteren Celtics stimmt das - es waren Original Minolta Objektive, bei denen man ein paar Sachen weggelassen / vereinfacht hatte. In diesem Fall jedoch werde ich das Gefühl eindeutig nicht los, ein Fremdfabrikat in den Händen zu halten. Die Farbe der "Foot"-Skala ist komplett anders als bei den Rokkoren aus jener Zeit, die Gravuren sind nicht Minolta-like (man vergleiche z. B. die Nummer "4", und die optische Kontruktion ist offensichtlich anders als die aller andern Minolta 2.8/135er.

Vielleicht findet plötzlich jemand ein Tamron, das so aussieht wie mein Celtic 2.8/135mm (es ist übrigens auf Dennis' Liste die Nr. 171)...

Gr Steve

Lässt dieser Text aus einer Minolta Broschüre darauf schließen, dass die Celtic Objektive nicht mit Achromatic Coating vergütet wurden?
Oder interpretiere ich das falsch?

ZITATAs the owner of Minolta SLR, you may choose your lenses from two domestic families of genuine Minolta optics:The Minolta Celtic line, and the incomparable Rokkor-X series.

Minolta Celtic lenses offer computer design and traditionally fine Minolta quality at popular prices. Minolta Celtic lenses are made of the finest optical glass in the most used wideangle and telephoto focal lengths to suit the usual needs of most photographers.

Rokkor-X lenses offer Minolta's exclusive Achromatic Coating as well as the ultimate in computer design. Their superb optical performance and impeccable mechanical construction reflect the precision of the Minolta single-lens-reflex system of photography. The Rokkor-X series ranges in focal length from 7.5mm fisheye to 1600mm extreme telephoto and includes specially designed macro lenses and zooms.[/quote]

ZITAT(opelgt @ 2010-02-28, 12:09) Lässt dieser Text aus einer Minolta Broschüre darauf schließen, dass die Celtic Objektive nicht mit Achromatic Coating vergütet wurden?[/quote]
So verhält es sich wohl.

Auch Joe McGloin schrieb dazu auf MINMAN:

http://www.subclub.org/minman/mcceltic.htm
ZITATMC CELTIC LENSES

The MC Celtic line was a less expensive alternative to the MC Rokkor-X lenses, designed to compete with third-party lenses. Prior to the Rokkor-X line, Minolta lenses used an achromatic coating on its lenses. This provides more than adequate protection against flare in most situations. The MC 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 MC 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.[/quote]
Der inhaltlich gleiche Text fand sich auch bei der Besprechung der MD Celtic-Objektive.
ZITATCutting these corners, cut the sales price quite a bit. The original line of Celtic lenses was quite extensive, and even included a macro lens.

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 and later cameras.[/quote]
Auch interessant in Bezug auf die MD Celtic-Objektive:

http://www.subclub.org/minman/mdceltic.htm
ZITAT[...]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).[/quote]
Viele Grüße,

Matthias