 Deb |
focusing with bi-focals It's me the bifocal girl again. I think I am focusing adequately, however my instructor does not. I think I am focusing the camera, but struggling with the enlarger. Help!
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Andrew Laverghetta |
I don't know about darkroom and stuff except photoshop, but maybe take a picture of a few lines on something white and see how it looks? Something that would be really obvious if it was in or out of focus. Just tossing out an idea.
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Michael H. Cothran |
If it's the camera, it may have a built-in adjustable diopter, or an optional replacement diopter. If it's the enlarger, there are lots of focusing aids available. A good quality grain focuser is probably best, and they can usually be adjusted to your eyesight without glasses. Michael H. Cothran www.mhcphoto.net
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Kerry L. Walker |
Unless you are always shooting at a large aperature, your problem is probably not with the camera. A small aperature will give you enough depth of field for acceptable focus. Try shoting a photo at the smallest aperature you have on your lens and then try enlarging it. Most likely, if the picture is not in good focus, you are having problems with the enlarger. You can buy a grain focuser for around $15,00 (& up). That will help a lot.
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Mark Feldstein |
Greetings Deb: The way to definitely tell whether your camera focus is alright is to look at the negs on a light table with a good magnifying loupe, say in the 6x or 8x range. Of course, if they're sharp it ain't your ability to focus the camera. If they're not sharp, then I'll assume that the upper part of your glasses is to correct near-signtedness , while the bottom portion is for far-sightedness. I'll also assume you're focusing the camera with a corrective far-sighted diopter using the top part of your glasses, right? You should be able to properly focus the lens regardless of whatever aperture you're working at. One suggestion I have is to take the camera and lens to your eye doctor and actually test your focusing abilities using your camera and their eye chart. In other words, look through the camera at the chart and determine whether you can get it in focus. At at least get your glasses checked against the prescription. Aside from corrective diopters for the camera, (and your eye doc can tell you exactly which one to get) you may also be able to get a different focusing prism installed in the camera that will make it easier for you to see and focus. If the negs are sharp but prints aren't, I agree with Michael on the adjustable focusing aid but unlike the camera, it seems that with the far-sighted portion of your glasses you should be able to use a normal magnifier without adjustments. That's why I suggest getting your glasses checked for both near and far visual acuity. SEEwhatImeanhuhSandy?? ;>)
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Bunny Snow |
I also have this problem and had taken my camera w/ lens to the eye doctor for my check up; also for my bi-focal fitting. They couldn't figure out what the setting should be so I could see. They could set it so they could see, but said that I had to do it myself. I don't need glasses for driving --my far sighted vision is fairly good. Just cannot see up close (near sightedness). So, I need glasses to set my camera. It seems to me that there is some kind of a chart available to check for the sharpness of lenses, that may help me set the diopter for my bifocals. Anyone know of this. BTW, near vision is the lower and distant vision is the upper of a pair of glasses. I have low dispersion lenses for my camera, shoot on a sturdy tripod, use a flash at HS to stop motion, and mirror lock when applicable. Even bought a RRS L bracket and ball head to place the lens/camera over the center of the tripod. It's my changing vision, and I need to learn to set my camera diopter to my eye glasses. I think a chart would help if I knew what I was looking for. I've seen such a chart decades ago, but don't know for what I should ask. Advice is welcome. Thanks. Bunny
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