Shadowy Daisy

Shadowy Daisy
by damned-truths

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61

I think medium and large format photography is still a world dominated by film. While that fact is starting to change with more recent digital cameras that have extremely high megapixel counts (20mp or more), going to a larger format is SIGNIFICANTLY cheaper with film. The benefits of large format are particularly nice for landscape photography, but shine ...


60

Is there any significant benefit to having an SLR mechanism in a digital camera? Particularly in terms of a benefit that's large enough to make up for the liability of adding a mechanical part into a design where a solid-state alternative is available? Yes. Response speed for both autofocus and shutter release. The mirrorbox has a number of side ...


52

And with a digital camera, you don't need a hinged mirror as you can show the user exactly what light will be captured by just routing the sensor output to an LCD display. This is the reason for the rise in popularity of mirrorless interchangeable lens cameras (MILC). Without the mirror box, the camera can be smaller, lighter, less expensive, etc. ...


48

Star trails (Google images search) are much easier to photograph using film equipment, for a few reasons: It won't kill your battery. A digital SLR will expose for an hour if you're lucky before the battery dies, depending on your power setup (extra grip vs no). A film camera can expose indefinitely without using any additional battery usage, which is ...


47

Infrared and ultraviolet photography is much more accessible with film. With digital it is possible, but generally involves modifying the sensor to remove the hot mirror, which is very expensive.


43

It would be wrong to think that increasing ISO results in no "physical" change in the camera at all. The problem with ISO is that people often call it sensitivity. That is really a misnomer...sensitivity is a fixed attribute of any given sensor, and it cannot be changed. Sensitivity is really more synonymous with the quantum efficiency of the photodiodes, ...


43

DCIM is short for Digital Camera IMages and is part of the industry standard outlined by the Design rule for Camera File system. This standard was adopted as the de facto standard for storing digital image and sound files in memory devices by the digital camera industry to insure interoperability from one brand to the next. From wikipedia: Design rule ...


42

Quick summary Yes, bigger pixels do improve performance all else being equal, and Apple is doing a good thing by focusing on sensor size. However in this case the increase in size is so slight that the difference will be negligible, probably not living up to the level of improvement you may expect from their marketing. What does bigger pixels mean? This ...


39

You don't need any special equipment if you're just starting out with astrophotography. So forget about a telescope and an equatorial mount (to counter the earth's rotation) just for now, it's complicated enough already without those things ;). Besides the moon you can take wide field shots of the night sky with your 20D and a normal lens and tripod. I ...


39

Both technologies serve the same purpose: to sample and record how much light hit each pixel. They just work differently to achieve that goal. The pixels on a CCD contain no active circuitry, just a small "capacitive bin" which passively stores a charge until it can be shifted along to the next bin, and eventually off the sensor and read by circuitry then. ...


38

From a purely theoretical point of view: more megapixels good. People often talk about how high megapixel sensors were now outresolving most lenses, thus there was no point going higher unless using the very best glass. This is not always true. System resolution is the product of lens resolution and sensor resolution. Thus if you improve one, your system ...


37

This is moiré. It occurs because a screen is actually a grid of squares that are being used to make the image. When it ends up trying to be mapped to another grid of pixels (either by being captured by a sensor or by scaling) points of light or pixel data don't line up exactly. Some pixels get 2 pixels of information, some get the border between pixels. ...


34

Digitally blown highlight is worse than negative film because transition between blown and light areas is quite harsh. Slide film is only slightly better than digital in rendering details in overblown highlights. You don't even need high magnification to see the digital image blowing promptly plain white, while the negative film gives more gradual fading of ...


33

There's a difference between color and color correction filters although they both are colored. Color correction filters are useful in digital photography to get more even exposure in all channels under some special types of lightning. For example you'd probably get more exposure and thus less noise in blue channel if you used blue color correction filter ...


31

First, understand a couple of things: Even though we call these things "digital cameras," the process of turning photons into numbers is entirely analog. Analog circuits pick up all manner of noise from their surroundings. Noise isn't one constant value, it's a range of them that top out at a level called the noise floor. The processing you did on the ...


30

I still compose diagonally on a regular basis when shooting bands, I find this maximises what I can get into the frame, and the resulting images work both mounted diagonally and in a regular upright orientation: I agree that presenting other images like this wouldn't work, for example if you do a diagonal composition of a shot with a horizon it will ...


30

Given the current state of the art, the noise in the blue channel is a combination of cascading effects that work together to make the blue "look" the worst. First, with the Bayer pattern setup, there are twice as many green pixels as red or blue ones in the matrix*. This immediately puts the blue and red at a spacial disadvantage as compared to the green ...


27

You've asked quite a few questions, each that is not necessarily as straight forward to answer, but I'll do my best. For reference, check out this link for some definitions for key terms often used in photography. [What are the] basics of photography? The very basics are: Adjusting your camera settings Aiming your camera at something Pressing the ...


27

1~2 and 3. On CCDs, the amplifier is effectively in the corner of the sensor, but on CMOS, there is an amplifier built into each photosite, dispersed throughout the sensor. See here. As mentioned in one thing I recently discovered, most DSLRs have an amplifier before the ADC (Analog-to-Digital Conversion). They tend to max at 800 or 1600 ISO and are all ...


27

I used to be a pro, so I can answer this: This is absolutely normal; it is even very good! I consider 30 good pics out of 400 a very good result! The most important point is IMHO that you go over your shots and select. The "reflection process" is important. It is the place where you learn to take good pictures. This is what most amateurs don't do. And this ...


25

Don't forget a major drawback that EVF's require power to compose, and are much harder on batteries if you spend a lot of time with the screen on. Also, as previously mentioned, because of delays, it is harder to follow moving objects with an EVF.


23

First an explanation; this answer extensively borrows from and combines points from a number of the existing answers to this question. To those from whom I have borrowed, thanks. A short answer to this question is "very little" but that hardly does justice to the intent of the question. So I'll make a long answer and divide it into sections. Spectral ...


23

Maybe it represents the small variation of the temperature of the sensor. A hot sensor produces more noise than a cool one. The small temperature difference can be explained by the presence of electronic components, or the way the sensor is in contact with other parts, allowing more or less heat dissipation. Some related links : http://en.wikipedia.org/...


23

One thing to consider is what style of photographer you fashion yourself as. Some schools take more pictures than others and see different success rates. Are you shooting sports? You have no control over the action so you're probably going to spray-and-pray until you get the perfect shot. You may only get 1 sellable photo out of 1000. Are you shooting on ...


22

I don't think we can talk about quality difference anymore. The definite difference, in my opinion, is the need of power of digital cameras. If you are going mountain climbing then a film camera might be more appropriate since mountains still lack power plugs. Also, film cameras have a very low starting price. If you are a novice it is economically ...


22

Yes, digital sensors are indeed sensitive to UV light, as well as a considerable amount of the infrared spectrum. Most digital sensors are equipped with multi-coated, multi-layered filters that are designed to filter out the extended ranges of UV and IR. Generally speaking, filtered digital sensors are sensitive to a much broader range of light than the ...


21

One result of using a polarizer is the deeper blue skies; that effect isn't hard to replicate using software such as Photoshop, Lightroom, Picasa, or the GIMP. Another important reason a polarizer might be used is to reduce glare and reflections. The best example of this is if one is photographing a puddle or pond; without a polarizer the surface will ...


20

The answer will most probably change in time. Current top cameras are said to capture around 10-11 stops at base ISO, less at higher ISOs, see DPReview tests of Nikon D3X for example. As a sidenote - you won't probably like the pictures that are processed to measure the maximum dynamic range, they'll simply lack contrast you'd expect from "normal" picture. ...


20

Oh man. Yes lasers can and will damage your camera's sensor! Your laser pointer is probably weak enough, but I still wouldn't risk it. Light painting (as you were doing), is okay, so long as you're not pointing your laser directly into the lens, however, if you plan on doing more light painting, I would switch to an LED or incandescent source instead of a ...


20

Yes, if you shoot RAW. If you have difficulty visualizing an image in B&W, shooting in B&W gives you a good approximation of the final image at the time of shooting so you can adjust; many digital cameras can even process B&W with color filters, so if you have a particular type of processing in mind, such as using a red filter to darken skies (...



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