Question about Photography
Hi, I have an Exakta VP Model B with a Hugo Meyer 7,5cm f2,7 Makro Plasmat and cannot find any info about it anywhere? Does any one know of any others? The body serial No is 417340 and the lens serial is 581850...the focusing helicoid is quiet a bit longer than other Exakta's I have with Tessar lenses?? Please let me know if anybody has any info on my camera,thanks JonathanG
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Posted on Jan 02, 2017
Additionally: Even if your Vivitar lens does not have a Minolta lens mount, you can get an inexpensive adaptor to be able to mount the lens on your Minolta camera. At least you used to be able to buy these adaptors before the World went digital crazy. I still think the adaptors are available. Check with any large camera store, like B&H in New York. Also manual focus lenses for older SLR's (Single Lens Reflex) film cameras are available at reasonable prices. I have the same Minolta X370 camera (along with few others) and lenses for it. So you can get a lens that has a Minolta mount for your camera, this might be the easist way to go and you can sell your Auto focus lens (since the Auto focus will not work with the Minolta X370 camera). Hope this helps you. Thanks, AJ.
Posted on Sep 21, 2007
SOURCE: auto focusing problem
The D40 will only autofocus with the Nikkor AF-S lens...look for the AF-S in the lens title. For 3rd party lens, only SIGMA with the USM title will autofocus.
To use the T-adaptor...you will need to use the "Manual" mode of the camera.
Posted on Dec 29, 2007
The lens has a lever marked A/M near the aperture ring. If the lever is in the 'A' position, the lens will stay wide open until you trip the control lever at the back of the lens next to the rear optics. In the 'M' setting, you can see the aperture move as you change the f-stop setting on the ring. Set the lens to anything but wide open and move the control lever with your finger. You should see that aperture move.
Posted on Jan 14, 2008
In that case the linkage between the movable parts of the lens group and the focussing ring has failed.
What follows applies to most lenses; I have a Canon 50mm FD to hand but as it works perfectly I've not needed to dismantle it so far but have repaired many others.
When you turn the focus ring there are usually two pegs which engage into helical slots cut into the focussing ring, these are hidden within the lens and you won't see them unless the lens is dismantled. The pegs are usually rounded to make the passage along the helical slot even smoother and each one is fixed to the inner lens barrel by a screw. On older lenses, the grease inside can dry out a bit, especially if the lens remains unused, when this happens the pegs may either shear off or simply become unscrewed and drop off. The gummy grease may hold them so you won't always hear a rattling part inside.
To fix it, you carefully dismantle the lens to the minimum extent you can get away with. You'll need good light, patience and a set of good quality crosshead precision screwdrivers. Normally you start with the screws on the mounting flange and watch out for small springs and detent balls which tend to escape to freedom never to be seen again. Some of the screws are usually hidden beneath the rubber grip on the focussing ring, and you remove this to check by carefully lifting an edge and then rolling it back over itself. It may need re-gluing afterwards. Clean out dried grease as you go and apply a small amount of thick grease to replace it on reassembly: less is far better than too much! Some of the screws may need thread lock applied to them when they go back in, but you're better off leaving this as your first time lens repair usually has to come apart again due to an error in reassembly.
Be prepared to ruin this lens as it's your first lens repair. The good news is that auction websites have plenty of other cheaply and in full working order, just make sure to ask if the iris (aperture) works smoothly and snappily and that the lens does not have the dreaded lens fungus on the glass elements (a patchy white haze). You can also usually get these lenses for free on Yahoo FreeCycle and a camera body and other goodies normally come as part of the offer. FreeCycle is how I've collected various Nikons, Canons and Pentax SLRs and lenses over the last year to add to my existing Olympus gear.
I hope that I've helped you, if so please return the favour by rating my answer.
Posted on Jul 08, 2009
Sorry to hear about your lens. If you are able to autofocus and take pictures with any other lens, then it means that your problem lies with the kit lens. If you can take picture in manual mode, but not in autofocus mode, then the AF motor in the lens in not functioning. I had the same thing happen to my 50mm 1.4 lens.
Depending on your location, there are Nikon repair centers in Melville, NY and Torrance, CA.
Hope this helps,
Posted on Apr 16, 2010
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