Donald Miller said:Mark,
I can't answer your question regarding a 'blad lens. I don't find any of my Bronicas having smaller apertures then F22.
The matter of aperture size is a function of aperture opening and focal length. Therefore a large format lens, while it may have a F45 aperture will be a larger focal length and the effective depth of field may not be any greater then your medium format lens.
The difference that large format photography enjoys is that one has the benefit of movements to effectively increase depth of field without solely relying on stopping the lens down to accomplish this.
mark king said:thank you for a very helpful answer. although you have confused me more because i now need to start researching focal length more. confusing stuff at the moment but i look forward to it. maybe i could pick your brains some more?
have you been shooting large format long? is it a major shift in photographic logic from medium format.
once again cheers.
mark
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