Steve'sDigicams

JHVOLTZ · Mar 6, 2006, 4:58 PM

What is the diference between a wide-zoom lenses and a 50mm for example!? There is some variation of the aperture range!?There is a lense that is capable to work in entire range...? fixed or wide-zoom ?

Thanks

rjseeney · Mar 6, 2006, 6:15 PM

I'm not quite sure what you're asking....a wide angle zoom obviously has a greater field of view than a non wide angle lens. The 50mm in digital terms is a slight telephoto (in film SLR's it was viewed as a normal lens..meaning it has a field of view roughly equal to the human eye).

Zooms have a variable field of view....there are many zooms the include 50mm in their range....the 18-55, 18-70 to name two. There is a tradeoff when using zooms...typically the widest aperature isn't as wide as a prime lens, and there are usually some distortion issues. However you get the convinience of not needing to physically move closer to or away from your subject.

JHVOLTZ · Mar 6, 2006, 6:35 PM

Uhmm... let me place this way:

There is a lense that covers all the way through from f/1 to f22 ?

rjseeney · Mar 6, 2006, 7:12 PM

No. Of current lenses, there is a 50mm f/1.4. Other than the other primes that start at f/1.8, the best zooms start at f 2.8. Most consumer zooms start at f 3.5, or f 4.

JHVOLTZ · Mar 6, 2006, 7:28 PM

I have now a Sony W7, and it say in the front of the lense: 2,8-5,2/7,9-23,7. The colors of photoson outdoor have exelent colors and very sharp, however the results on low light conditions are not very good. Always blur or noise.

I´m thinking about the Nikon D50 in the coming months, then what lense can make good photos in poor lights conditions ???

Nagasaki · Mar 7, 2006, 8:25 AM

The Sony W7 has a maximum ISO of 400 and at that speed you will probably get a lot of noise. The D50 has a maximum ISO of 1600 that is probably less noisy than 400 on the Sony and a 400 it will be pretty much noise free and usable at 800.

The 18-55 kit lens is 3.5-5.6 so slightly slower than the Sony lens at the wide end but difficult to compare exactly as it has adifferent range. The sony is 38-114 in 35mm equivalent terms and the Nikon 27-82.5 mm.

IMHO you will get better results with the D50 in low light with the kit lens using the range of ISO settings available.

If you want better than that then for low light the 50mm 1.4 lens is the fastest available. There are alsoa lot of other prime and zoom lenses available from Nikon and others that are faster than the kit lens.

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Mar 6, 2006, 4:58 PM	#1
JHVOLTZ Junior Member Join Date: Nov 2005 Posts: 14	What is the diference between a wide-zoom lenses and a 50mm for example!? There is some variation of the aperture range!?There is a lense that is capable to work in entire range...? fixed or wide-zoom ? Thanks

Mar 6, 2006, 6:15 PM	#2
rjseeney Senior Member Join Date: Dec 2004 Location: Taylor Mill, Kentucky Posts: 2,398	I'm not quite sure what you're asking....a wide angle zoom obviously has a greater field of view than a non wide angle lens. The 50mm in digital terms is a slight telephoto (in film SLR's it was viewed as a normal lens..meaning it has a field of view roughly equal to the human eye). Zooms have a variable field of view....there are many zooms the include 50mm in their range....the 18-55, 18-70 to name two. There is a tradeoff when using zooms...typically the widest aperature isn't as wide as a prime lens, and there are usually some distortion issues. However you get the convinience of not needing to physically move closer to or away from your subject.

Mar 6, 2006, 6:35 PM	#3
JHVOLTZ Junior Member Join Date: Nov 2005 Posts: 14	Uhmm... let me place this way: There is a lense that covers all the way through from f/1 to f22 ?

Mar 6, 2006, 7:12 PM	#4
rjseeney Senior Member Join Date: Dec 2004 Location: Taylor Mill, Kentucky Posts: 2,398	No. Of current lenses, there is a 50mm f/1.4. Other than the other primes that start at f/1.8, the best zooms start at f 2.8. Most consumer zooms start at f 3.5, or f 4.

Mar 6, 2006, 7:28 PM	#5
JHVOLTZ Junior Member Join Date: Nov 2005 Posts: 14	I have now a Sony W7, and it say in the front of the lense: 2,8-5,2/7,9-23,7. The colors of photoson outdoor have exelent colors and very sharp, however the results on low light conditions are not very good. Always blur or noise. I´m thinking about the Nikon D50 in the coming months, then what lense can make good photos in poor lights conditions ???

Mar 7, 2006, 8:25 AM	#6
Nagasaki Moderator Join Date: Jan 2004 Posts: 897	The Sony W7 has a maximum ISO of 400 and at that speed you will probably get a lot of noise. The D50 has a maximum ISO of 1600 that is probably less noisy than 400 on the Sony and a 400 it will be pretty much noise free and usable at 800. The 18-55 kit lens is 3.5-5.6 so slightly slower than the Sony lens at the wide end but difficult to compare exactly as it has adifferent range. The sony is 38-114 in 35mm equivalent terms and the Nikon 27-82.5 mm. IMHO you will get better results with the D50 in low light with the kit lens using the range of ISO settings available. If you want better than that then for low light the 50mm 1.4 lens is the fastest available. There are alsoa lot of other prime and zoom lenses available from Nikon and others that are faster than the kit lens.