Saturday, March 8, 2014

Advice on DSLR Camera zoom lens?




riggers


Hello all keen photographers!

I wondered if you'll could answer a few Q's for me..

1) Is this the correct order for the way a camera is built?

a) lens
b) aperture
c) shutter
d) image sensor

2) Nikkor 28mm f/2.8 AF D

what does the 'D' stand for?

3) 18-55mm lens

Is 18mm the distance between the lens and the shutter, or the distance between the lens and the aperture?
Likewise is 55mm the distance between the lens and the shutter, or the distance between the lens and the aperture?

4) If you'll have time and don't mind, could you have a look at some of my flics on 'Flickr'

I'd really appreciate some feedback on my shots. Good feedback, and especially critical feedback. (please leave a comment on each image post)
http://www.flickr.com/photos/31190551@N03/

Lastly, thankyou all so very much for checking out my Q, and thanks in advance for your answers, I really appreciate it!

Riggers..



Answer
What do the letters mean?
G - A new subset of the D-type lenses, without an aperture ring. The aperture is set by a command dial on the camera body.
D - Lens provides distance to subject information to camera; useful for automatic flash setting
ED - Extra low dispersion glass; give superior sharpness and color rendition
IF - Internal focus - the lens does not rotate or extend as it focuses
AF-S - Auto-focus, silent wave focus engine contained inside the lens itself
DX - Lens formatted for digital sensors that should not be used on full frame cameras
VR - Vibration Reduction - a gyroscopic system to detect and correct camera shake to yield sharp images at slower shutter speeds

18mm and 55mm refer to the "focal length" of the lens. If you don't understand that, I suggest that you check out Wiki on the topic, as they will have illustrations to make it clear to you. Scroll down: http://en.wikipedia.org/wiki/Focal_length

I don't understand what you mean in the first question about the order in which a camera is made.

You would do a lot better if this was posted as four separate questions. Some people love giving photo critiques and others enjoy answering technical questions. Asking so many questions in one will chase some potential answerers away.

which image stabilizer installed in DSLR is more dependable:camera or lens?




a_joemar


DSLR sony, olympus etc.. has image stabilizer in the body
while..
DSLR Canon, Nikon has installed on its lens..

so, which is better?



Answer
Many camera manufacturers have different opinions on the advantages and disadvantages of the two systems.

In camera sensor shift has the advantage of always being there, no matter what lens you should decide to put on the camera, and is thus its main advantage. However it is not viewable through the view finder, a problem that one might find quite irritating.

The advantage with lens shifting systems (such is IS or VR as called by Canon and Nikon respectively) is that they can be viewed through the view finder, something that most photographers will agree is an important thing, and will value much in the same way they use the viewfinders depth of field button. The key disadvantage of lens shifting systems is that they tend to cost more to implicate, which is the key reason why manufacturers such as Sony (a more consumer orientated manufacturer) have chosen to use inbuilt image stabilisation into the camera body.

As for the effectiveness of the two systems, there is very little difference, all image stabilisers remove around 2-4 stops of shake at relatively similar quality. If I were to make a choice, I would go with lens shifting, as it rely on the lens and I find it quite important to see the effect the stabilisation has on my subject as I am a wild life photographer often shooting at around 600mm.

However this opinion did not affect the choice of camera I went for, it just happened to work out that way. When choosing a camera there are much more important things to consider, such as upgrades (what camera will you by next) and lens, and customer support, and above all the way the camera fits your hand. Image stabilisation should be near the bottom of your list with gadgets such as sensor cleaning and Live view.




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