Canon D60 not focusing when hooked up to studio lights
I have my Canon D60, and honestly apart from the exposure issues its not a bad little camera. But today I had it hooked up to my studio lights and it just wouldn't focus, it would just zoom in and out trying to find a point of focus. I tried 3 differant lenses and all three lenses did it. It was very annoying having to stop and wait for it to stop doing its thing and start again. Outside it has no problems in focusing just with studio lights.
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Re: Canon D60 not focusing when hooked up to studio...
1) Being connected to your studio lights is interfearing with the camera's electronics, disturbing its ability to focus. Does it focus if you're not actually connected to the studio strobes, but are trying to focus using just the modelling lights?
2) There may simply not be enough light for the camera to focus. Canon sells a red LED AF illuminator that sits in the hotshoe (can't remember the part number). That may help. Also, if your modelling lights are set to "tracking" or "proportional", try setting them to fixed full power. You've probably got the strobes set several stops lower than full power, so "tracking" modelling lights rob you of several stops of focusin light. Or try a faster lens.
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You'll have to shoot in Manual mode (turn the mode dial to M). You'll get no assistance in setting the exposure from the camera's exposure meter, so you might want to use another lens to get a rough idea of the proper exposure before mounting the 500mm. You can then use the playback and the histogram to fine-tune the exposure. You'll probably want to use a sturdy tripod or similar, since the long lens will magnify every bit of camera shake. You also won't get any autofocus with the lens, so you'll have to focus manually.
If the pictures are coming out overexposed, you need to close the aperture (larger f/numbers) and/or use a faster shutter speed and/or lower the ISO setting. The exact settings will depend on the light.
Yes and no. Assuming you get the version with the Nikon mount, it will fit on the D60 and the exposure metering will work fine. However, as it's not an HSM lens, lacking a focus meter, it will not autofocus on the D60.
I believe Promaster does not have any lenses with focus motor in the lens, so it will not autofocus with your D60. Their AF versions for Nikon will work with your camera's metering system for proper exposure, but you would have to focus manually.
You need to do what is called an exposure lock. Aim at the subject, even if it's out of focus and half press your shutter. Then press the * button on the camera (top right) and it will exposure lock. You can then re-focus, but it will hold the exposure that was metered previously, so you'll get focus on a different object to what the camera has focused on. You can exposure lock anywhere, it doesn't even have to be your subject, it could be a nearby window to underexpose, or a nearby dark area to underexpose. Once you've locked the exposure you can focus somewhere else.