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Posted in response to Re: Re: Re: Re: Re: MINERAL PHOTOGRAPHY from Alan on June 11, 2007 at 18:52:55:

Re: Re: Re: Re: Re: Re: MINERAL PHOTOGRAPHY

Alan and Mike,

I can use all the old Nikon lenses from my F3 on the D50. Unfortunately, you lose the auto focus and metering capability. The auto focus is no big deal as manual focus works best for marco work. Exposure is trial and arro. It does not take long to get in the ball park. Once you get to know your set up and how the camera sees the specimens you get pretty close on the exposure. The sensors on most digital SLR cameras are smaller than a 35mm frame. The image recorded by a 100 mm lens on the D50 is like having a 150 mm lens on a 35 mm format. When you go below the standard lens length to the wide angle world it is the opposite, you need a shorter lens to get the same image view. While Nikon has a 1.5X factor, other makes may vary.
Doug

From Doug Merson - June 12, 2007 at 01:17:58
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