what is the significance of the .09m and 1.6m switch on the lens?
833386
It is a focus limiter switch. It refers to the minimum distance from which the lens/camera will search for focus. For instance, if you are trying to focus on a distant object, but have nearer objects (such as vegetation) in the way, setting the switch to 1.6m tells the system not to focus on anything closer than 1.6m. Also, if you know your subject is going to me more than 1.6 meters away, moving the switch to 1.6 reduces the distance range over which the lens hunts for focus. The minimum focus distance is actually 0.9 meters, not 0.09 meters.
832290
I think that refers to the macro feature. True macro would be 1:1 meaning a one inch object would be one inch on the sensor/film. So this lens would have a one inch object being .36 inches on the sensor. Which is quite good given the sensor size. The zoom is as rated (12-50 with a 2x crop)
464303
This is an FX lens. This means that you will be shooting the equivalen of 600mm at the long end!
104840
Here's how a D lens works on your camera: you keep the lens locked at the largest aperture number on the aperture ring. You do not go off this locked setting or you'll get an FEE error. You change all your f stops from f/4 to f/32 through your camera body only.
2204555
The f/# changes as you zoom the lens. At 24mm it is f/2.8, at 85mm it is f/4.0.
933401
Many lenses are described as having "macro" capabilities, but this only refers to their close-focus distance and magnification. A true macro has 1:1 magnification; the 35-70 was 1:5.6, and the 24-70 is a little better at 1:3.7, but neither are true macros.
1734188
Hi Russell, I don't know if there was a lens change, but mine has both the AF and MF switch (I bought it 3-4 months ago). As I am Google Trusted Photographer my lens stays in the MF mode all the time. It's great a lens and make fantastic panorama pictures.
1056959
I don't recall which one I got, but the picture quality is very good for this lens. The picture stabilization on/off button doesn't show any noticeable quality improvement for me. Need to keep checking.
1747
These numbers refer to the strength (magnification) of the lenses. Higher numbers magnify more.
1385530
I would presume that this is normal, as my 14-140 OIS switch is also the same way. Other than that, I think it is a terrific lens.
1326931
It allows u to step the aperture up or down.. It does not declick the aperture for a continuous fluid aperture, that would require a modification to the lens itself.
920674
Somewhere around the 4 mark. It's such a great lens. I don't think you'll regret purchasing it, truly.
449840
Besides the longer zoom, the lens on the "9" is also slightly faster [f 3.3 vs the f 3.5 on the "7"]. Therefore, it should [theoretically] have better IQ in low light situations.
2230132
All I know is that it refers to the unit of measurement of the optical power of the lens. I can't quantify the numbers, but this lamp magnifies very well.
1340325
The first number is the power of the lens, that is how much it will magnify the image. The second number represents the diameter of the lens in mm. They work together to calculate a number called the "exit pupil" or "exit ratio". Take the lens size and divide it by the power to get this number. The higher the number, the brighter the image. For example, 10x50 will give an exit ratio of 5.0, 8x42 would be 5.25, 10x42 would be 4.2. In my opinion, the exit ratio is more important than the power. My favorite binoculars are 8x50 (6.25) but I also just bought 10x50 as a gift who is delighted with that configuration. Stay away from high-power binoculars. They, for me, are too hard to keep steady due to the high magnification. I hope this helps. -Norm
1679461
Its infinitely variable as far as I can tell. Its like twisting a knob. I don't use this very often, only on one particular lens. I almost forgot about it. Thanks for reminding. No issues with this at all. Just guesstimate only for aperatures.
2203913
It is a 500mm lens with a 2x converter that doubles the length to 1000mm, it is manual focus also.