Spring 2012

Spring 2012
by ani

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New answers tagged

2

In motorports photography a lot of images are panned captures. This is how the wheels get blurred and show motion. You can do this with a slower autofocus system such as the one you are using. Kevin's approach of focusing on a spot where a motorcycle will pass is very good advice. You can use manual focus or spot, whichever makes you feel more ...


5

In addition to Kevin's answer -- fast shutter speed, experiment with AF modes -- here are three more tips that will help you reach success: Use manual focus. The fastest autofocus systems are too slow for some uses or are fooled too easily for some uses. But manual focus lets you avoid those troubles! Prefocus where you know the motorcycle will be and as ...


2

I have not tried motorcycle events but have successfully photographed Ice Hockey matches with reasonable success so this advice is based on that. Set the camera to shutter priority (Tv) and start with a minimum of 1/250. You may can go faster if the light permits. The smaller the aperture you can get (while keeping the 1/250 min) the better to maximise the ...


0

This is a difficult search. I found a lot of information on the Canon EF mount (largely because of Magic Lantern), and some about Nikon. Pentax is not enough of a mainstream brand to interest a lot of folks to reverse engineer the lens-camera communication, and the Pentax-Q is even a smaller subset of that. I noticed that on the Metabones FAQ page, they say, ...


1

According to page 267 of the D5500 Reference Manual, using custom setting f2 to set the AE-L/AF-L button to AF-ON prevents the shutter release button from focusing.


3

Assuming there's nothing wrong with the camera itself (possible), there are a few settings to check. Hit the Menu button, go to the Setup menu (third icon), and select the Buttons item. There should be an option to set the behavior of the AF-L/AE-L button. When this is set to AF-ON, the button activates the focus, and the shutter release does not autofocus....


0

In addition to the metering issues well addressed in Itai's answer, there is also the design limitation of AI Servo compared to One Shot in the type of dim light that the IR AF Assist Beam is needed. When in AI Servo the pixels in the PDAF sensor array get a shorter "exposure" time than they do in One Shot. In very dim light the signal to noise ratio on the ...


4

There are some other considerations, depending on the camera in question. I'll address it from the point of view of Canon EOS cameras (which is where the nomenclature AI Servo originated). Situations in which One Shot will perform better than AI Servo for Canon EOS DSLRs: Low light conditions. Per Chuck Westfall, the head of Canon USA's Professional Client ...


8

Yes it is convenient, and does track a subject, but not always your subject. For this reason, I always use one-shot. In situations where there are multiple potential subjects, but one I wish to focus on, one-shot is really the only way that works for me. In sports, but even in travel photography: In sports, you are shooting a soccer game, and you wish to ...


2

It appears you are shooting indoors. At f/6.3 there's probably not enough edge light making it through the lens to the camera's AF sensor for the camera focus the lens. If you were in brighter conditions or aiming at very high contrast targets it might work better. The PDAF sensor in any SLR with AF compares edge light from opposite sides of the lens to ...


1

The focus confirmation light indeed does NOT work in ai-servo mode. It would be cool if the focus confirmation dot acted like a missile target lock indicator, but it doesn't. It just tells you that the AF system has attained the best focus it can. In AF Servo mode it never reaches that point because the subject may move. How am I supposed to know if my ...


5

The reason the focus confirmation light does not function in AI Servo mode is because the camera never stops tracking the subject and adjusting focus as necessary. The green focus confirmation light in the lower right corner of the viewfinder is an indicator that AF has been locked and has stopped measuring focus. That's the last thing you want to happen in ...


0

The camera is continuously focussing, so it doesn't really make sense to indicate which focus point is active. It would potentially be changing all the time, which could be distracting, or the camera could illuminate one focus point, the subject could move and the camera re-focusses using another focus point and the user might think that when they took the ...


0

In the manual for the X-T10 or X-Pro2 (and probably others), when describing the AF+MF feature, Fujifilm suggests: Set the focus ring to the center of the focus distance indicator, as the camera may fail to focus if the ring is set to infinity or the minimum focus distance. This seems entirely reasonable. Of course you can't then get to extremes far ...


0

I'm assuming it is seeking wildly without ever finding focus, right? Are you sure there's enough contrast for phase-detect autofocus to work reliably? Beyond that, it is possible that the lens is decentered or that it just has issues with the AF system in that particular camera. Regardless of the underlying cause, it is probably worth telling the 6D to ...


2

It may be that you are experiencing what is often the downside of using an older third party lens on a newer camera body: AF incompatibility. Lens makers such as Tamron do not license technology from camera makers such as Canon to insure compatibility. Instead they reverse engineer the technology in order to design compatible lenses. When a manufacturer such ...


1

The LA-EA4 uses the adapters AF sensors only and not the cameras, however LA-EA3 uses the cameras AF point and are therefore recommended for the A6300 (but not for the A6000), but doesn't have AF motor for lenses needing screw-drive. No, it would not work at all (no auto focus of any kind at all), but LA-EA3 have no translucent mirror and no light lose, it ...


2

However, with the LA-EA4 the A6300 is attached to an adaptor WHICH CONTAINS an extremely limited number of phase focusing points and the camera is 'looking through' a half stop ND filter.Ideally the A6300 would use its multitude of on-sensor phase focusing points, ignore the EA4's focusing points, and use the EA4 mainly to provide motor-focus-drive to the ...



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