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| Questions about DoF -
Question of Vinegar:
März 2009
Hello!
I have before me (as a poor student) a Sonytrv900 zuzulegen, the lower price in the region probably the strongest performance among camcorders. First, it is probably short for smaller projects remain. However, I'm waiting for time on a divine inspiration, the creativity of my pathetic jumps to help .........
To at least on the picture to have more control than my imagination synonymous irritates me the idea s.einen-DoF. Particularly friendly, the principle seems to me the following instructions:
Reply Axel:
For DV "is" a still-standing screen. Proposal: I lend you my old, for longer, if thou wilt, thou Holst him s.in D'dorf and bring your camera with, then you can at the same Still Image chef around the corner for an adapter ring's Lens buy. 35mm Nikon f2.0 is. E-mail profile.
Reply Vinegar:
Thank you for the quick reply!
However, I have before me from trying to tinker with its own and a little self-experiment. As for me just a little confused is the variety s.Objektiven. If for instance the following Lens suitable (enough depth blur)? If yes / no why (not)?
Reply Axel:
It would be somewhat likely. The point of aperture not only to the lower depth of field with larger apertures (smaller numbers). One would like to sharpness with the depth of a F2.8 or F3.5 take preference. Effect sufficient, easier to manage sharpness. The problem, especially with light schluck the DIY adapters, is the inevitable sticker. The one with you will tend f1.4er less.
The most important attitude to the adapters, each snapshot is of free-thinking to do. Parallel to - nerve-wracking - self-employment is essential with artificial advisable. This must be no more expensive light suitcase, in this Aufheller >Abschatter.
Good luck.
Reply Maze:
is probably the only way first experience with depth blur to make!
There is no depth blur, please use the word never again.
It is called "low depth of focus"
Reply Axel:
is probably the only way first experience with depth blur to make! There is no depth blur, please use the word never again. It is called "low depth of focus"
Only half of accuracy:
Depth means the area between the shortest and longest distance of the sensor / film area of the screen to the subject in which the image appears sharp. Depending on how each Eskimo now know of many factors, which are synonymous with no ambitions are valid.
Depth of field means the field, he is usually much smaller than 1 mm, between the shortest and longest distance of the focus to the sensor / film / screen, in which anything sharp will be displayed. This somewhat strange beliefs definition is for the builder's own machine DoF, however, often to the rocks, s.dem their vessel bursts. Because of the small distance of these lenses is something very precise to 4.5 cm ;-))) - fix! (See
http://de.wikipedia.org/wiki/Auflagemaß
the table here. Even the most accurate "ruler" is not, however, by adjusting the eye to replace it on the page will also be explained.) - That there are no factors but only tolerance, but goes to zero.
When the distance (and the vertical direction) of the lens is not 100% true, there are still some gaps, which are sharp, but not all. It is important therefore, to be called Auflagemaß without tolerance to the infinity setting of KB-Optics calibrate - and the so solid build that this distance always remains synonymous *. Not least there is the "Rod Support, from Cam, KB-Optics and an absolutely rigid unit makes. It is not just about the discharge of the filter thread, as many believe. It is believed his Cam was of a piece, but there are too many connection points with one game to the extent added that it is enough to set the picture to be blurred! When DIY Support is the critical choice of materials: wood, thin-walled aluminum and the adjustment for popular threaded rods can be difficult to bolt a structure that at low load has no game. Therefore, synonymous to "from a milled aluminum block" housing for the more expensive models, no frills.
* Solace: Even with the purchase adapters must if the device mounted in front of the cam, this distance will be adjusted each time.
Based on the CD-frosted Dummy: It's difficult in my experience, I hesitate to say impossible, from the Walkman to screen scrap a construct that does not eiert. The small eggs may be roughly within the depth range to take place, it will still mean that the Picture, friendly manner, blur appears. For moving discs Matt seems to vibration technique is better to have a grip. For SD, there is Matt slices with sufficiently fine granularity, which must not be moved. They also have a light pastel effect by their scatter, but is desirable because it is the shooting at high contrasts allows one, on the other hand requires.
Conclusion: The principle is simple and calls about the crafters on the map. Success will have only those who can build accurate. High Prices at Purchase adapters justify that (hopefully) by the precision with which they are calculated and constructed.
Reply Maze:
really well explained.
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