Is the f2.8 constant for all the zoom range...? I mean the f value will change if one zoom out/in.
830312
The SETTING should stay the same. I'm checking...In the Aperture mode, setting to f/2.8 and rotating the zoom full out and back, the F/2.8 stays the same on the screen. On my Nikon D7000 the only way to control the ap...unless I've missed something, is in the A mode. Changing the mode dial displays a different ap biased on other factors. Even then, rotating the zoom does not change the displayed ap setting. Ie if rotating the mode from A mode where you have set the ap to say f3, to M or S, the ap may stay or move to another value if needed. At this point, whatever the value is displayed, rotating the zoom out or in does not change the f value. The SETTING should stay the same. I'm checking...In the Aperture mode, setting to f/2.8 and rotating the zoom full out and back, the F/2.8 stays the same on the screen. On my Nikon D7000 the only way to control the ap...unless I've missed something, is in the A mode. Changing the mode dial displays a different ap biased on other factors. Even then, rotating the zoom does not change the displayed ap setting. Ie if rotating the mode from A mode where you have set the ap to say f3, to M or S, the ap may stay or move to another value if needed. At this point, whatever the value is displayed,... » Read More The SETTING should stay the same. I'm checking...In the Aperture mode, setting to f/2.8 and rotating the zoom full out and back, the F/2.8 stays the same on the screen. On my Nikon D7000 the only way to control the ap...unless I've missed something, is in the A mode. Changing the mode dial displays a different ap biased on other factors. Even then, rotating the zoom does not change the displayed ap setting. Ie if rotating the mode from A mode where you have set the ap to say f3, to M or S, the ap may stay or move to another value if needed. At this point, whatever the value is displayed, rotating the zoom out or in does not change the f value. « Show Less
830313
It's like any other modern 70-200 f2.8. If you set it to f2.8 in manual it will stay there. In auto mode the camera will change shutter speeds and aperture to suit conditions.
830314
Yes, the f-stop is fixed throughout the zoom. Unless you change it on the camera.
830315
Hey Ed, When I was shooting at my son's hockey game every now and again it would all the way out and the camera had to be restarted. This was specific to the lens I bought. I ended up buying a brand new one and dontregret dropping the extra cash at all.
830316
In auto mod it changes. But in the manual mode you select your f and focus manually.
595977
Of course...2.8 is merely its widest aperature. Goes all the way to F22!:-)
979633
Unfortunately it is fixed at 4 magnification. The only thing that is adjustable is the ocular focus and the parallax. 4x zoom still has a nice field of view.
389219
As far as I know, there's no focus adjust. It's auto-focus, and everything in the FOV appears in focus all the time. I've never seen anything be out of focus.
2204555
The f/# changes as you zoom the lens. At 24mm it is f/2.8, at 85mm it is f/4.0.
736774
Given the high ISO capability and the noise-handling of current softwares (LR4!), I see no compelling reason for the extra stop, weight, bulk and expense of the f 2.8 version. It is NO sharper than its little brother. And you already have the 85 f 1.8.
1449308
No you dont. The term 'focal length multiplier', and I am assuming you are referring to this number, does nothing to your focal length. It is a horrible term. It is your FOV (field of view) that changes.
284457
Unfortunately no, you have even to multiply the f stop by 2x, so the 2.8 will be 5.6, is that what you asked for?
1235277
Unlike a zoom lens with a range in f stops such as a zoom with f4 to f5.6 the minimum f stop can change with different zoom settings. There are zoom lenses with constant f2.8 that can be set to an f2.8 at all zoom ranges. This lens is not a zoom lens but a fixed focal length. The minimum f stop of 2.8 can be set so it would be the same at any distance shot if one is using the aperture setting (AV) or manual setting (M). However if one has the camera at program (P) or speed (TV) settings and the lighting is different the lens will automatically change the aperture for the scene depending on the brightness of the subject in the frame. Unlike a zoom lens with a range in f stops such as a zoom with f4 to f5.6 the minimum f stop can change with different zoom settings. There are zoom lenses with constant f2.8 that can be set to an f2.8 at all zoom ranges. This lens is not a zoom lens but a fixed focal length. The minimum f stop of 2.8 can be set so it would be the same at any distance shot if one is using the aperture setting (AV) or manual setting (M). However if one has the camera at program (P) or speed (TV) settings and the lighting is different the lens will automatically change the aperture for the scene depending on... » Read More Unlike a zoom lens with a range in f stops such as a zoom with f4 to f5.6 the minimum f stop can change with different zoom settings. There are zoom lenses with constant f2.8 that can be set to an f2.8 at all zoom ranges. This lens is not a zoom lens but a fixed focal length. The minimum f stop of 2.8 can be set so it would be the same at any distance shot if one is using the aperture setting (AV) or manual setting (M). However if one has the camera at program (P) or speed (TV) settings and the lighting is different the lens will automatically change the aperture for the scene depending on the brightness of the subject in the frame. « Show Less
392624
There are three pages of zoom instructions with illustrations, and here are the basic settings: No zoom &gt; Stretch, Letterbox, Pillar Box &gt; Full Screen &gt; Under Scan &gt; 1.2 &gt; 1.3 &gt; 1.5 &gt; 2.0 &gt; 1/2 &gt; Back to 1:1 again. I like the fact that I can maintain the proper aspect ratio when playing older movies and TV programs from DVD. If there's X/Y scaling, I haven't found it but that doesn't mean it isn't there. I don't know where to look. :-)
1789042
For indoor sports, the extra stop the f2.8 provides could mean the difference between a blurry image (or noisier at a higher ISO) and a very good one. As noted, IS won't help freeze action so you might find the wider aperture more useful for your purposes. The larger f2.8 isn't quite as easy to tote around as the f4 though.
2054263
I use it for Skype. The zoom is constantly changing. Big disappointment to have the zoom changing from near to far. UGH!
2253818
Yes. I think it's default to f6. When you hit button the view freezes wherever you are looking
399354
Yes, optical zoom is now 24-70 (was 28-100) but aperture only goes from 1.8-2.8 as opposed to 1.8-4.9 on the older lens. Many enthusiasts prefer the faster aperture and 24mm wide over bigger zoom range.
1485838
Thank you for the response. But that is not it. I have walked through all the "Aspect' setting and the problem still exists in each area. It is very bad in the zoom setting.
229477
autofocus works fine except when you are really zoomed in all the way ... sometimes it struggles with fast moving objects.
1853584
The '6' has a maximum aperture of f1.4 vs f2.0 for the '5'. To me, this is a huge advantage. Much greater control over Bokeh. I have an M9 and a Digilux 3. I use the 6 the most.