Understand the ISO GanGuangDu photography
When you pick up the camera–whether amateur or a professional photographer, and whether you use film or digital cameras, inevitably to deal with GanGuangDu. When the camera can’t get enough of the amount of light, you can improve GanGuangDu value (or changing with the high GanGuangDu film).
All of the photographer depend on light, and light in different environment (time and place) will have different situation. Make the photographer to cope with the different lighting environment GanGuangDu, therefore become very important tool.
For each picture, it GanGuangDu will affect the choice of the samsung sb-l110a battery aperture and shutter speed. In such as rainforest, the corner or moonlight these available under the circumstances of less light, GanGuangDu is probably not the tripod can also take out only hope of photos. This is why digital camera to photographer feel more easy to use one of the reasons.
GanGuangDu refers to the light sensor sensitive degree
According to GanGuangDu ISO values, we can understand the film or the light sensors to feel ability. ISO 100 sensor and ISO 200, compared to need to 2 times the amount of light can achieve the same level of exposure.
In order to obtain two times the amount of light, need shutter speed reduced by half (for example, from 1/60 to 1/30 s s), or to increase grade 1 aperture (such as from f / 5.6 to f / 4).
Reduce the shutter speed obviously is not a good idea, this will increase the risk of fuzzy pictures. So why can’t we have been using the highest GanGuangDu set?
High GanGuangDu produce more pixels
Improve GanGuangDu pose the question: how will produce more pixels, but in the film photography, this is called “granular” thing is sometimes think that will increase photos of “feeling”.
Not only is the pixels
GaoGan brings problems is not only the pixels. In fact there will have three questions: increase pixels, reduce the sharpness, reduce the contrast.
Compared with the noise points, two questions don’t usually too obvious. The increase of the pixels can reduce picture sharpness, lost the details. Reduce contrast highlights and shadows can affect the ability to distinguish the details.
Pixels always negative?
People spend a lot of time in the low GanGuangDu and high GanGuangDu photos differences. It’s hard to say what kind of more appropriate-there are a number of pixels is not always a bad thing, may let the pictures are more feeling.
Different camera pixels different level
Do you think that in test GaoGan camera, photo seemed to be a more pixels?
Yes, different camera processing pixels ability is different, and in recent years the camera samsung sb-ls70ab battery GaoGan level also has very big development. If you use the portable digital camera, ISO 400 pixels may and other camera ISO 3200 level almost. And if you use the latest digital SLR cameras, in the ISO 800 above even are available.
Now we may be on the screen amplified the photos to check maximum size. But don’t forget to evaluation pixels level should be in the actual use of the picture size. To be honest, you have much of a chance would use more than A4 picture?
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