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15

There are both advantages and disadvantages to EVFs. The very best ones with high-resolution and high-refresh rates are actually quite suitable for most uses when well-implemented. The main disadvantages are: Lag: There is a short lag between action happening in front of the camera and what you see. Dynamic-Range: EVFs are small LCD screens and have ...


11

Yes, the A77 has a mechanical shutter and it does move at 12 FPS per second. There are a number of cameras with similar shutter-speeds including some ultra-zooms but indeed this is very fast. What it does not have is a motor to move the mirror. This is more problematic for speed then the shutter itself since a mirror is heavy and has to move out of the way ...


5

These are different designs, developed at different times. Forty years have gone between each was initially launched as the A-mount was simply acquired from Minolta which had by then fused into Konica-Minolta. The A-mount introduces AF which worked by Phase-Detection and hence lenses for that mount are designed to focus that way. Over the years, they were ...


5

The SLT-A55 at least no longer focuses but everything works, even with the mirror removed which you can do without too much difficulty. Exposure is off by about 1/3 EV.


4

Short answer: the difference is in an SLR the mirror flips up to take a photo, whereas the SLT employs a semi-transparent mirror so that the mirror never has to move. Now to your questions: 1) How does a DSLR do continuous focusing (AI servo/AFC)? Does it literally flip the mirror up, take the shot, put the mirror down, refocuses and repeat? That's ...


3

The mechanical shutter is still between the translucent mirror and the sensor when the camera is turned off. Even if you select the option to use electronic first curtain with mechanical second curtain, which leaves the shutter open just as many cameras do to use Live View or record video, it doesn't leave the sensor unprotected when the camera is turned ...


3

Your understanding is accurate. There are variations but the most significant difference is what you see in the viewfinder. This answer goes into all the details. The other significant difference is that the PDAF sensors are available during exposure and video-capture. This lets an SLT camera measure AF while an image is being recorded and then it adjusts ...


3

As many have said, those models are more or less equivalent photographically. Once you buy into a brand you will quickly get tied there because of lens, so it is worth it for you to check out the difference between lens lineup. The main difference which should concern you is that the SLT-A35 is not a DSLR. It is an SLD with a translucent mirror and, unlike ...


3

You have dust on the sensor. The higher the F-stop the more noticeable they are. To get to it you have to release the small latch at the base of the translucent mirror and lift it manually. If that happens rarely, I recommend you have it done in a store. The charge about $25 and they have a lot of practice doing it. Some stores here even do it for free if ...


2

I would recommend to use an air blower (for example: the Giottos Rocket Air Blower). That way you can safely blow dust of the mirror and the sensor without worrying about damaging anything.


2

I can a spot a few differences; 24 fps video vs 30, more WB settings, different battery (longer lasting), heavier and bigger but thinner body (probably easier to hold), extra connectivity options, ±5 EV (at 1/3 EV steps) as oppose to ±2 EV (at 1/3 EV steps), AE bracketing option. The Sony SLT A77 seems like a better alternative though.


2

All modern DSLRs are wonderful - probably you will be happy with any camera on the list. You can choose based on what camera feel better in your hand, based on some specific feature you want or based on price. As others have said the Canon 550D is a slightly "higher" model than the Nikon 3100, it has more features, better video and is fully compatible with ...


2

Note that although the A77 does have a mechanical shutter, it also has an adjustment to pre-open the mechanical shutter, and just use an electronic shutter to start a picture. This reduces shutter lag (by a large percentage, but it's already normally short enough to be mostly imperceptible) and noise, which can be handy if you're shooting things like ...


2

I made a quick-n-dirty test of rear LCD display lag myself. My friend came over with his Casio EX-F1 compact camera, which can record a video at 1200 fps. We shot a video of the Olympus SP-550 rear lcd panel at 300 fps and then slowed the result down to 1 fps. On the slowed video a one second represents 0,00333 second in real life. I had a Metz flash ...


2

I own a Sony A77 SLT camera. I am an 'avid' photographer. As well as well composed and static shots I enjoy pushing the camera to its limits in various ways including situations where correct timing of shutter release is critical. Overall I am happy with the tradeoffs that come from the EVF system. One factor that biases me is that I have been waiting ...


2

SLT is the designation of sony cameras employing a pellicle mirror, an electronic viewfinder as well as a phase-detection autofocus system. The pellicle mirror causes about one-third of an F-stop's worth of light to get lost to the AF system. This is of course something you don't want, but the gain is a phase detection even when recording movies. The EVF ...


2

I would like to add that unlike a traditional DSLR, the mirror in an SLT is not essentual to the operation of the camera. It can be removed in a few seconds and carefully stored in many small compact flash card cases. The camera will operate without a complaint in manual mode. The contrast based manual focus assist will still function. The preview in ...


1

You covered most of the advantages that SLT cameras enjoy over DSLRs, but there are a few other differences that give the traditional DSLR an advantage as well. With an SLT camera, 100% of the light entering the light box never reaches the sensor. In brighter conditions this loss is fairly minimal, but in very low light conditions it can mean the ...


1

I own a Sony A77 SLT camera. I am an 'avid' photographer. As well as well composed and static shots I enjoy pushing the camera to its limits in various ways including situations where correct timing of shutter release is critical. Overall I am happy with the tradeoffs that come from the EVF system. I am long accustomed to taking action shots with motion ...


1

I found something about Sony SLT A77's viewfinder. It still repeats what @Itai said about varying refresh rates in different lightning conditions, but what I found interesting was what they said about lag in good light. It is hardly noticeable. A quote below (bolding done by me): When not in continuous shooting mode, viewfinder responsiveness is a ...


1

I feel that the heating problem in A55 is a little troublesome. Plus the short battery life. It takes me almost 5 hours to charge but less than 2 hours to use it up full. But taking all this into consideration I have my doubts to put in so much extra for an A65.


1

I have no idea about the Sony either but between the Canon and Nikon you listed they are not equivalents by any means. The 3100 is Nikons current 'entry level' camera - roughly analogous to Canon's 1100D. The Canon 550D is more akin to Nikon's 5100 - it is a mid level prosumer camera - and a very nice one at that! You could indeed think of it as the ...


1

Use Photographic Solutions Eclipse fluid and their swabs and use 2 drops of fluid on each side of the swab. Place swab on sensor's right side and sweep it over the sensor like a broom and reverse it from left to right when you reach the left side and do not lift it off the sensor. Always use a new swab each time you complete the cycle. The proper size ...



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