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Re: [OM] Long Focus vs. Mirror Lens

Subject: Re: [OM] Long Focus vs. Mirror Lens
From: dreammoose <dreammoose@xxxxxxxxx>
Date: Thu, 31 Jan 2002 14:44:53 -0800
Hi Charles,

Two things I didn't see mentioned in the other answers:

- Someone mentioned that f8 is a 'reasonable' aperture. At 500mm, f8 has very little depth of field, making certain shots impossible. Conventional teles may require tripods (as does real sharpness), but the f-stop required for adequate DOF and associated shutter speed often require it anyway.

+ Mirror lenses usually focus quite a bit closer than regular teles.

I have 350/5.6 and 500/8 Tamron SPs which are great to carry for 'in-case', but I use my Tokina AT-X 150-500mm/5.6 for any serious long lens work. I also have a 1000/11 mirror, but that gets into the territory where the state of the atmosphere becomes almost more important than the lens. Ths Tokina also focuses closer than most conventional 500mm teles, 2.5m, 1:3.5.

Moose

Charles Monroe wrote:

  What are the pros and cons of a long focus versus a mirror lens of
the same effective mm length?



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