As good of a spot as any to wade in
DevilDog said:
Well, I just turned 17 in February. That probably says a lot.
You're going to have fun learning. FWIW, I personally like & recommend pretty much any of the books by John Shaw. Go check him out on Amazon.
I just have the 28-80 lens. I'd like a good zoom lens, and close up would be good.
Most of us probably started with a lens in this general range. As we experimented, one of the things many of us discovered is that a 35mm camera with a 50mm lens is roughly the same perceived view as we get from the human eye ... and that moving away from what is "normal" is "interesting".
Personally, while I have lenses from 20mm to 300mm, I find that I don't generally shoot the "middle" stuff anymore...I tend to be either very wide or very long.
A few Q's:
1. Are milimeters on the lenses always the same... like, on a telephoto would 200mm be different than a close up 200mm?
A mm is a mm, but they can be differently applied: the lens focal lengths of 35mm film cameras have become the comparison benchmark for (not quite all) digital systems: for example, your D50 has a sensor size that is smaller than the 24mm x 35mm of a traditional piece of film, so it has what is referred to as a "1.5x crop factor".
What this means is that your 28mm-80mm Nikkor lens on a D50 is the
equivalent of a (1.5x)(28mm) to (1.5x)(80mm) = 42mm-120mm zoom lens.
The only time that such a "crop factor" doesn't apply is when the digital camera has a sensor the same size as film. These are called "Full Frame" (FF) cameras. Note: Nikon doesn't currently make any of these.
This "effective focal length" bit is a bit confusing, but it exists to help us old dogs out who have been shooting with 35mm for a hundred years
to be able to keep up with these new changes of the digital SLR age.
Even for newcomers, I think its an important thing for you to know & be aware of, since digital sensors are being made in around a dozen different sizes (mostly in Point&Shoots), and each variation ends up being slightly different.
Finally (yeah, I'm getting long on Q#1), be aware that this "1.x" crop is a GREAT thing for when you want a longer telephoto lens, but it is a BAD ting when you want a wider wide angle lens. There's no such thing as a free lunch.
2. What set of lenses would you recommend for me to have a decent coverage of most necessary distances?
As a rule of thumb, I'd say that a good starting point ... to see what you like ... is 28mm-200mm equivalent. On the D50, this would be 18mm to 135mm (I divided by the 1.5x crop factor to get these numbers).
For most people, the limits are set by the practical aspects of affordability. In traditional 35mm, it gets expensive to go below 20mm and above 300mm, so that's what are most hobbiests' natural limits.
Putting this into D50 terms is the tricky part, since the variable here is cost. YMMV on where "affordable" lenses end, but if we say that the wide angle is the 18mm on a digital mount (EF-S for Canon; I think its DX for Nikon), but we can still go up to 300mm with the standard SLR mount, after the crop factors are considered, what was a 20mm-300mm range for 35mm is evolving into a 28mm-450mm range for a dSLR like the D50.
3. Why don't they put the VR in the camera itself???
This is starting to happen.
4. Difference between 'close-up' and wide angle?
This is Apples-vs-Oranges. You can have a close-up (macro) lens without it being a wide angle and vice-versa. Ignoring a lot of the engineering details, the big difference between a Macro lens and a normal lens is that it has been designed to have a longer range of adjustment. Simplistically, this comes down to how far a lens element inside can be moved. Less simplistically, the Devil's in the Details on how to do this while maintaining quality over the entire range and all sorts of other optics concerns...this is why not all lenses have this range of adjustability.
FYI, you can "convert" many lenses into a macro lens by adding what's called an 'Extension Tube' between the lens and the camera body. Extension Tubes are fairly cheap, but they do have some trade-offs, such as not being able to focus the system at infinity. Consider it another tool in the toolbox to experiment with sometime.
FWIW, since your budget is probably fairly low and you're interested in close-up photo's -- plus since extension tubes don't have any glass in them, they last forever -- this might be something for you to consider playing around with in the near term, while you sort out if your focal length interests are more wide or more long.
<<< EDIT: Kenko has a 3-piece set for Nikon for $160 on B&H's website. >>>
5. High power zoom and telephoto?
If the telephoto is a zoom telephoto and not a prime lens telephoto, then its simply a difference in nomenclature.
I do have a job, so if I need lenses I can obtain them. I'll be going to Fort Benning at the end of the summer and want to get a lot of pics there.
Glass gets expensive, fast. What also gets expensive fast is to buy a comprimise and then replace it shortly thereafter. At Benning, the parachute drop towers are probably a nice subject to photograph, although you'll probably have to get a camera pass to be allowed to bring your personal gear on post.
... what's the best way to take pictures through glass?
Sounds like you're asking about how best to use a polarizer. Modern autofocus cameras require a "circular polarizer" if you want them to be able to continue to auto-focus.
-hh