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Forum: Pentax SLR Lens Discussion
04-17-2009, 09:10 PM
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Thank you for the precise answers. The one about the screwmount still blew by me but guess I will cross that bridge when I get there.
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Forum: Pentax SLR Lens Discussion
04-17-2009, 09:07 PM
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Thank you, the article on dpreview is excellent, although a lot to chew on, for a beginner like me.
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Forum: Pentax SLR Lens Discussion
04-16-2009, 09:43 PM
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New here so I appreciate some education on different Pentax lenses from anyone knowledgeable and patient. If someone can post a link where its already explained, I'll quietly go away and read.
I'll use different 50mm f1.4 lenses as examples on a K20D body to ask my dumb questions.
How does the A setting work? What is the difference between if I set the aperture ring to f2.8 vs. setting the aperture ring to A and then choosing f2.8 using the thumb wheel in Av mode?
K and M lenses. When I pop one on, rotate the aperture ring to f2.8, focus and press the AE-L or the green button, what is the camera showing me in the Viewfinder? What will the camera do if I just release the shutter? What exactly is stopping-down and who's doing it? And why?
And what's with these lenses? Are they like a bridge between the K and M, and the Auto Focus? How do they work compared to the manual lenses, and also when compared to the F and FA lenses when used in A setting?
How does the camera meter through these lenses without opening the blades? How does it work in Av mode as some members were discussing it?
Thanks all.
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