hong_chow

<p>I am not sure the bit rate you mean is the bit rate for the compressed video. If so, for a good video quality, the bit-rate, compression ratio, frame rate and SNR are critical. The bigger the bit-rate the better the video quality provided that the others parameters are constant. For example, if you record a video for 1080p 30fps, the video quality of a 20Mbps bit rate is better than 5Mbps.<br> On the other hand the smaller bit rate has a better compression ratio. So this is a question of balance between video quality and compression ratio.<br> If you want to be serious about the video codec, you may need to read the video standards (eg. H.264, MPEG4, VC1, DIVX, etc. for what is macro-blocks, motion vectors) or you can search over website for "Introduction to video codec".<br> Hope it can help.</p>

<p>Hi Geoff,<br> Thanks for sharing the website info which consolidates about digital image knowledge in sensor and post image processing background. The Info are very useful to me.</p> <p>Also thanks for Alan's suggestion about a tripod for wild life shot. Should I buy a mono-pod as well in case I need to travel? My old tripod was very bulky and heavy(about 2kg).<br> Thanks.</p>

<p>Just say hi to all you in this forum.<br> I was once serious about photography , but missed a very long period of time. My first camera was Fujica ST701 film camera. <br> During the missing period I usually used a P&S camera(film or digital) for family shot.<br> Today I wish to catch up something in digital photography and get involve again. I believe my basic photography skills in film camera is pretty same as in DSLR camera when taking the shot. (Please correct me if I need to acquire new skills for DSLR :)).<br> Currently I have an entry level (D3200) DSLR with kit lenses(18-55mm and 55-200mm) to explore and learn. I also add 35mm DX fast lens for low light condition for my initial setup. My targeted interest is landscape and wild life. <br> Thanks.</p>