Leica M8 backfocus
26 Jan 2007 13:12 Filed in: Leica M8
My
Leica M8 came with backfocus on shorter and shorter
focusing distances, I mean infinity focus is perfect,
short distance focus is made behind the point you
adjust the rangefinder for. I tested M8 with 3 lenses
35mm f2 + 50 noct + 75 f1.4 : all 3 lenses did
backfocus on short distance with perfect focus on
infinity.
I could solve this "easily" (I did it a long time ago with M4-P wich had vert. misaligned RF + front focused RF). Here is how, but be careful, this operation can normaly only be made by a certified Leica reparator. If you do it, it is at your own risk. You could probably loose your waranty with such an operation, or even worse, damage your camera.
Bakfocus on short distance comes from a too short focus sensor lever. To adjust it :
0. before making any adjustement to the RF be sure that your lense(s) focuses perfectly on lense's (not RF) infinity (very easy to test with a digital camera). Problem in focusing precision could come from a lens whose RF barrel is not properly adjusted.
1. loosen just a little bit the screw which secures the lever on its shaft with a screwdriver (I modified a normal screwdriver to be oblique, so that it fits better the screw at an angle)
2. Turn the ring surrounding the screw by a little amount in the screwing direction, so that the lever is moved to the left.
3. Tighten center screw.
4. The effect of changing lever length is that it changes the angle of the arm with the RF lens barrel and so changes lightly infinity RF position. That's why there is a screw (allen) in the center of the focusing wheel. Adjust it to get a perfect RF infinity.
5. You are ready to make new tests. If it's not OK you can repeat above steps.
The amount of "move" of the lever depands of the amount of backfocusing. The best is to go with very little paths until you reach the perfect focus.
Again, this procedure is a micro-mechanics operation. Don't go in this procedure if you are not familiar with micro-mechanics.

I could solve this "easily" (I did it a long time ago with M4-P wich had vert. misaligned RF + front focused RF). Here is how, but be careful, this operation can normaly only be made by a certified Leica reparator. If you do it, it is at your own risk. You could probably loose your waranty with such an operation, or even worse, damage your camera.
Bakfocus on short distance comes from a too short focus sensor lever. To adjust it :
0. before making any adjustement to the RF be sure that your lense(s) focuses perfectly on lense's (not RF) infinity (very easy to test with a digital camera). Problem in focusing precision could come from a lens whose RF barrel is not properly adjusted.
1. loosen just a little bit the screw which secures the lever on its shaft with a screwdriver (I modified a normal screwdriver to be oblique, so that it fits better the screw at an angle)
2. Turn the ring surrounding the screw by a little amount in the screwing direction, so that the lever is moved to the left.
3. Tighten center screw.
4. The effect of changing lever length is that it changes the angle of the arm with the RF lens barrel and so changes lightly infinity RF position. That's why there is a screw (allen) in the center of the focusing wheel. Adjust it to get a perfect RF infinity.
5. You are ready to make new tests. If it's not OK you can repeat above steps.
The amount of "move" of the lever depands of the amount of backfocusing. The best is to go with very little paths until you reach the perfect focus.
Again, this procedure is a micro-mechanics operation. Don't go in this procedure if you are not familiar with micro-mechanics.

BONNE ANNEE 2007 et meilleurs voeux photographiques !
01 Jan 2007 02:10 Filed in: Leica M8
Leica M8 - Dynamique
31 Dec 2006 22:05 Filed in: Leica M8
Voici une photo représentant particulièrement bien la
haute dynamique du M8 - Eclairage d'hiver, très cru,
contraste très élevé, en contrejour - AUCUNE RETOUCHE
! Dévelopement Capture One.
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Lire la suite...
Leica M8 - plus de photos N&B
31 Dec 2006 21:03 Filed in: Leica M8
Autres photos Noir et Blanc ...
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Lire la suite...
Leica M8 - Maître du Noir et Blanc, au look argentique
30 Dec 2006 22:01 Filed in: Leica M8
Le M8 est trop sensible aux IR pour la photo couleur,
ce qui provoque une tendance à produire un accent
fortement magenta suivant les conditions lumineuses
de la photo. Pas de problème basculons au Noir et
Blanc à partir du format DNG, et là les résultats
sont superbes et nous rappellent que le Leica était
le roi du noir et blanc en argentique et le reste en
numérique.
Lire la suite...
Lire la suite...
Leica M8 - Bugs ?
27 Dec 2006 00:28 Filed in: Leica M8
Symptôme : ligne verte horizontale placée à
différents endroits sur la photo. Rappelle le
problème des "Green Ghosts" des premiers modèles de
M8.
Après plusieurs jours de photos faites au Leica M8 nouveau batch de production, voici 2 photos à anomalie. Est-ce un problème de réflexion parasite ou de bug logiciel ?
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Après plusieurs jours de photos faites au Leica M8 nouveau batch de production, voici 2 photos à anomalie. Est-ce un problème de réflexion parasite ou de bug logiciel ?
Lire la suite...
Leica M8 - premier contact
20 Dec 2006 19:09 Filed in: Leica M8
Zürich, Suisse, décembre 2006
Tout nouveau tout beau, tout corrigé de ses défauts de lancement, ce nouveau Leica me replonge 20 ans en arrière après l'achat de mon premier Leica M4-P qui à l'époque paraissait si dépassé mais également si présent et si efficace dès lors qu'il fallait avaler de la pellicule Tri-X.
Le M8 garde tout de la philosophie du Leica M : compact, racé, fait de pur métal, sans compromis en termes de qualité, au télémètre des plus efficaces, à la précision horlogère des plus belles montres mécaniques, aux optiques toujours plus corrigées et aux performances atteignant les plus hauts sommets en qualité d'image.
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Tout nouveau tout beau, tout corrigé de ses défauts de lancement, ce nouveau Leica me replonge 20 ans en arrière après l'achat de mon premier Leica M4-P qui à l'époque paraissait si dépassé mais également si présent et si efficace dès lors qu'il fallait avaler de la pellicule Tri-X.
Le M8 garde tout de la philosophie du Leica M : compact, racé, fait de pur métal, sans compromis en termes de qualité, au télémètre des plus efficaces, à la précision horlogère des plus belles montres mécaniques, aux optiques toujours plus corrigées et aux performances atteignant les plus hauts sommets en qualité d'image.
Lire la suite...
Epson V700 Scanner
01 Aug 2006 21:34 Filed in: Accessoires
V700 is the very new scanner from epson with highest
level of scanning aptitudes for a flatbed
scanner.Here is an example of 6x6 dias scan made with
V700. A full galerie of 6x6 can be found here.
Aperture file becomes the master image on which all adjustments will be made using very efficient Aperture's version management.
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Aperture file becomes the master image on which all adjustments will be made using very efficient Aperture's version management.
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