nhmitchell Posted January 11, 2008 Share #1 Posted January 11, 2008 Advertisement (gone after registration) Am I correct to assume that the viewfinder will be brighter with this lens (in low light) than it is with the kit zoom lens? Seems logical. but maybe I am overlooking something. I've got one on order form B+H. Maybe it will come some day... Thanks for your counsel. Nick Link to post Share on other sites More sharing options...
Advertisement Posted January 11, 2008 Posted January 11, 2008 Hi nhmitchell, Take a look here 25 MM 1.2 Panaleica Lens. I'm sure you'll find what you were looking for!
andybarton Posted January 11, 2008 Share #2 Posted January 11, 2008 Should be. The bigger the widest aperture, the brighter the viewfinder, if the viewfinder looks through the lens. On a Digilux 3, I assume? Are you sure it's not an f 1.4? Link to post Share on other sites More sharing options...
goodbokeh Posted January 12, 2008 Share #3 Posted January 12, 2008 Am I correct to assume that the viewfinder will be brighter with this lens (in low light) than it is with the kit zoom lens? Seems logical. but maybe I am overlooking something. I've got one on order form B+H. Maybe it will come some day... Thanks for your counsel. Nick Yes, I use the 25mm Lux on the D3 and the viewfinder is nice and bright. This is especially nice for interiors. Be sure to have D3 updated to the latest 2.0 firmware to properly handle exposures at f/1.4. Link to post Share on other sites More sharing options...
zapp Posted January 14, 2008 Share #4 Posted January 14, 2008 Am I correct to assume that the viewfinder will be brighter with this lens (in low light) than it is with the kit zoom lens? Seems logical. but maybe I am overlooking something. I've got one on order form B+H. Maybe it will come some day... Thanks for your counsel. Nick It will be brighter than with the kit lens, but maximum brightness is typically accomplished with lenses with a maximum aperture of 2 or even 2.8 depending on the focusing screen. Check the brightview, intenscreen homepage for details. Link to post Share on other sites More sharing options...
goodbokeh Posted January 14, 2008 Share #5 Posted January 14, 2008 It will be brighter than with the kit lens, but maximum brightness is typically accomplished with lenses with a maximum aperture of 2 or even 2.8 depending on the focusing screen. Check the brightview, intenscreen homepage for details. That is interesting zapp, could you provide the link? What happens to the extra light being transmitted through a f/1.4 lens? Link to post Share on other sites More sharing options...
nhmitchell Posted January 14, 2008 Author Share #6 Posted January 14, 2008 Zapp: That's really interesting! I'm not a physicist, so all I can go on here are my instincts. And my instincts led me to wonder where the light is going as well. What a puzzle. Help us figure this one out! Thanks, Nick Link to post Share on other sites More sharing options...
farnz Posted January 15, 2008 Share #7 Posted January 15, 2008 Advertisement (gone after registration) Perhaps absorption and reflection at the outer edges of the lens. Reflection: light rays striking the outer edges will do so at a more oblique angle owing to lens curvature so the likelihood is that a higher (but still small) percentage will be reflected than for those rays striking the centre. Absorption: light rays entering the lens at the outer edge will have a slightly longer path to the film or sensor than rays striking nearer the centre. A longer path = more glass to pass through = more absorption of light (attenuation) owing to Rayleigh scattering. We're talking tiny fractions here and this is only a suggestion. Pete. Link to post Share on other sites More sharing options...
goodbokeh Posted January 16, 2008 Share #8 Posted January 16, 2008 Perhaps absorption and reflection at the outer edges of the lens. Reflection: light rays striking the outer edges will do so at a more oblique angle owing to lens curvature so the likelihood is that a higher (but still small) percentage will be reflected than for those rays striking the centre. Absorption: light rays entering the lens at the outer edge will have a slightly longer path to the film or sensor than rays striking nearer the centre. A longer path = more glass to pass through = more absorption of light (attenuation) owing to Rayleigh scattering. We're talking tiny fractions here and this is only a suggestion. Pete. I could go for that with heritage lenses for APS or full frame cameras but 4/3rd lenses are purposely designed to transmit light without oblique angles to the sensor and reflex mirror. Link to post Share on other sites More sharing options...
Delfi_r Posted January 16, 2008 Share #9 Posted January 16, 2008 I could go for that with heritage lenses for APS or full frame cameras but 4/3rd lenses are purposely designed to transmit light without oblique angles to the sensor and reflex mirror. Telecentric lenses as they are called. And the 25 1.4 it's great on that. When I have nice photos taken with this lens I'll post them. I was glad to shot in interiors with available light. even with the viewfinder. Link to post Share on other sites More sharing options...
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