FAQ: Canon EOS 450D / Digital Rebel XSi Volume III


12.10.2009 22:33:00
What you need to disable the squelch only when shooting at Rawa, at last squelch squelch exposure or at high ISO? Which one is subtracting from the black square?
 

12.10.2009 22:43:00
quote:
:
What squelch should be turned off when shooting only in Rawa,
You can not disable any.
quote:
denoising at last exposure
This obviously does not hurt.
quote:
squelch or at high ISO?
And this RAW-e works only on the creation of prevyuschki.
quote:
Which one with subtracting the black square?
first.

13.10.2009 3:11:00

tried at one point, I tried to focus on the same area of ​​the object. Today to continue the experiment.

13.10.2009 9:39:00

tried at one point,
This 18 mm smaller objects that are obtained
would probably be a noticeable difference if, say, the object of 55 mm covers an area 3000h3000 pixels (9Mp), and 18 mm, it takes only 1000x1000 pixels (1Mp).
Especially for fans to look at 100% magnification.
If it really wants the truth to shoot a flat world (or your favorite all brick wall) at different focus from a tripod without the stub and the same scale, t. E. That at any focal frame to fit the same number of cells worlds (or bricks, scaled feet ).

13.10.2009 11:07:00
Excerpt about a second.
shooting handheld.
It really do this, you need only the other hand, breathing and gently pull the trigger
http: // fotkidepo. ru /? id = album: 24096

13.10.2009 20:29:00

HDR handheld with a second shutter speed? Well this is what we must have iron hands, and dyhalku like a pearl divers.
How many frames used in the overlay?

13.10.2009 21:58:00
no, a second, smaller.
used 1 frame


now looked 0. 4 seconds.

14.10.2009 14:16:00

quote ():

Advanced User
shot on the kit lens 18-55, all eerie landscapes soap,

This dark lens. Accordingly, the autofocus is not as good,
What and when you move to infinity too?


Apparently, I need to take lessons in political correctness.
When a whale does not work improved focus central point.


and f / 50 1 4 bought TC. 1. 8 was not available

And rightly so. 50/1. 4 USM much nicer induced. Many photographers are not gazing through 50/1. 8 EOS Utility, do not even understand what it put fifty dollars cheaper.

14.10.2009 18:25:00

When a whale does not work improved focus central point.
And why improved focus for the central point of the landscape, where the zone is usually a huge field?

14.10.2009 19:26:00
quote:
:

quote ():

Advanced User
shot on the kit lens 18-55, all eerie landscapes soap,

This dark lens. Accordingly, the autofocus is not as good,
What and when you move to infinity too?


Apparently, I need to take lessons in political correctness.
When a whale does not work improved focus central point.
We're talking about a particular landscape photos for him it does not matter.

15.10.2009 14:15:00
So I clicked clicked on whale 18-55 at f8 with vspyhoy, basically normal. Sometimes the focus is smeared in a seemingly not so small details, but it's bearable. You're in public practice.

15.10.2009 14:32:00
and can be a silly question? why he does not want to focus on the white image such as a monitor or in the sky?
thanks

15.10.2009 14:44:00

hooked not for that, there is no contrast

15.10.2009 14:52:00

so important that makes sfotat single output - transfer to manual mode. zadalbyvaet so when he Whack-Whack - could not focus, you once again - Whack-Whack again and can not focus. and not only on a white or on a sky is

15.10.2009 15:04:00

on a white sheet, do not focus - the machine has no built-in sonar. But I do not catch the problem, you no longer have to be hooked in the frame?

15.10.2009 15:14:00

well, there are times when it just can not grasp something and we have to refocus on something else just wondered why there because eye focuses on what he wants. and wrote here somewhere that the eye to the camera away

15.10.2009 15:21:00


eye to focus, because the brain can determine the distance to the sheet by circumstantial evidence, that is, the field of view, there is something else. AF sensor can also help by giving him grab the edge of the sheet, or highlight it with something with a clear boundary spots. Sensor needs at least some transition, so that he could hang on for him.

15.10.2009 16:28:00
A ragged me that if AF can not focus.
then by plohovo view, I hand on the far objects into focus, too, because I see bad.
a "twist" vidosikatel have nowhere

15.10.2009 16:48:00

lenses. I do glasses photograph.

15.10.2009 16:49:00

"twist" vidosikatel have nowhere
sold diopters tips on the viewfinder

15.10.2009 17:17:00
Yes, I too think diopters nozzle, but sometimes she takes fotik pofotkat)

"vidosikatel" - ochepyatka

15.10.2009 17:40:00

but sometimes she takes fotik pofotkat
removed - it five seconds

15.10.2009 19:22:00
quote:
:

but sometimes she takes fotik pofotkat
removed - it five seconds
. . . if "slowly and sadly."

15.10.2009 20:40:00

. . . if "slowly and sadly."
it.
during this time and the old can be put back

16.10.2009 11:44:00
Yes floor clear.

just me, in principle, this fact is not particularly upsetting.

and even during the day, even so is easier than at night)

16.10.2009 13:03:00

eye focuses on what he wants. and wrote here somewhere that the eye to the camera away

not write here this


so important that makes sfotat

yes, should the ban if AF is not navёlsya. . . read the instructions to start. . .
 

16.10.2009 13:11:00


yes, should the ban if AF is not navёlsya. . . read the instructions to start. . .

read and know Just wanted povozmuschatsya

not write here this
can not just in this thread. but precisely in the digital image

16.10.2009 13:19:00
Wrote on the contrary, that the camera to the eye away.

otherwise why all these dances with HDR?

16.10.2009 13:34:00

Oh, no. I remember very well what else wrote, the camera perfectly sees in the dark, and the eye does not see nifiga about cones, sticks. . well, too lazy to look it all I still surprised

16.10.2009 13:43:00

otherwise why all these dances with HDR?
so same monitor can not display the whole range. I'm talking about RAW "e.

16.10.2009 13:48:00
quote:
:

otherwise why all these dances with HDR?
so same monitor can not display the whole range.
monitor can not display and the camera - to remove.

16.10.2009 15:13:00

monitor can not display and the camera - to remove.
And eyes to see.

human device works on the same principles as the camera - he also has nedosvety and overexposure. The eye does not see "the image HDR" in all conditions.

16.10.2009 15:47:00

otherwise why all these dances with HDR?

not the smallest accordion self-citation offtoplyu:
quote:
quote:
Here then made tonmaning, Allows you to "draw the" all important details for nasdetali composition. As I have already said - that this stage - the creative and depends on the taste of the performer. Creative

it because satisfactory matmodeli no visual apparatus.

If you absolutely on the fingers, you get something like this. The human eye - an interesting device, each cone contains a lot (a lot of) special molecules (opsins). When a photon is absorbed the cone opsin molecule decomposes with generation of electric current. And then miracles begin - in every cone built (chemical) preamp. The gain depends on the illumination (decay rate opsins) of the cones as well as its environment (the next cone). Thus, even the eye adapts to vyskokontrastnym scenes, producing a level of cone preamps what is called tone mapping "th (though the actual tone-it just does not map" GSI, which is the subject of a separate large conversation). This is the primary adaptation. Further flasks are combined into domains, each of which is processed again adaptive circuit (suppressing blooming and there, and the detection boundaries and corners, and so detection of motions. D.). First-level domains are combined into second-level domains, and so on. D.

Make sure that the mechanism works simply. Zadёrni curtains on a sunny day, leaving a gap of half a meter wide. Stand in the back of the room, looking toward the window. A few minutes later you will see and (conditionally) box under the table and the machine on the street. Contrast the order of 100 000: 1 so you can easily catch. Sam and more caught in similar conditions. Despite the fact that modern DSLR cameras and 10 000: 1 does not show. Do you want to take a picture of this scene, you need to do Bracket. Moreover, three frames are almost certainly not enough.

That's modeling of these (some, not all) of adaptive processes is the task of the so-called tone mapping "as well. Since reliable matmodeli visual apparatus not, and tone mapping make as TNB put per capita. And TNB per place is not shy!

can, of course, and in a simple way - to announce the task of dynamic range compression creative process. And, you can explain the flight divine power, scoring the aerodynamics thick red. And the mechanics of continuous media with sopromat there too - build can also be creatively , Avon, Transvaal Park in the form of a beautiful whale tail. Was.

This is the question "What is HDR and why it is necessary." It is necessary, because the principles of a pair of "camera / monitor" (or "camera / printer" ) and the human visual system are very different.


human device works on the same principles as the camera

incorrectly. See above.


16.10.2009 17:55:00
quote:
:

monitor can not display and the camera - to remove.
And eyes to see.
he did not have.

16.10.2009 18:21:00

The eyes have iris and focus adjustment is, and it works with nedosvetami and overexposure. After all, no one is watching as described by the example of the time? If you create such "unnatural" conditions for the camera, nothing prevents a program to make HDR one frame where each pixel matrix is ​​controlled separately (simpler option divided into sectors according to the level of illumination), the optimal value is calculated and output have a picture that no one eye do not dream. No paired frames, even nothing in optics and matrices do not need to change, you just need stronger data processor.

16.10.2009 19:01:00

The eyes have iris

Yes, EMNIP three stops. The influence of the diaphragm with respect to a change in eye sensitivity can be neglected. While viewing the scene contrast aperture is the same for the entire field of view.

Nobody looks as described by the example of the time?

All. Only in this way. Constantly when there is at least some perceive light.

nothing prevents HDR software to make one frame

mesh. There are no reliable physics and mathematics models. That is, give here are the results . Man sees otherwise.

when each pixel of the matrix is ​​controlled separately

prototypes of such devices already exist. Work, measured HDR scene. What to do with this next one HDR (no!) Really knows. Uselessly obtained like this .

16.10.2009 19:24:00


All. Only in this way. was meant A few minutes later you will see. . . .

prototypes of such devices already exist.
high contrast subject - it is one of the main problems when shooting and decide who is the first task will have an advantage. Prototypes of devices only confirm that the producers are some activities in this area, and sooner or later the solution is always the case.

21.10.2009 0:28:00
urgently need EOS Utility. . . disc in kamplekte Cator died. . . . .
where to get? . . . . on ofsayte only update. . .

21.10.2009 2:14:00
*** On
have
http: // ***

21.10.2009 21:39:00
Update
actually full version. We need only one key in the registry to add (google to find easily)

21.10.2009 22:31:00
thank friends, everything downloaded, installed and added. . . .

24.10.2009 22:08:00
question. . . . how to lock the white balance on the first frame when sёmke panorama? . . . .

24.10.2009 22:13:00

choose from a list of suggested yl create Custom WB

24.10.2009 23:04:00
quote:
:
question. . . . how to lock the white balance on the first frame when sёmke panorama? . . . .
Shoot in RAW.

25.10.2009 2:10:00

I always shoot in equal but not to understand how I should help

25.10.2009 2:34:00


with Rabbi film development at the first frame expose BB and all that I want - as you like,
then copy the settings from the first frame
and paste a single click in the rest of the frames marked with panorama

25.10.2009 9:18:00

I always shoot in equal
well then even easier - exhibitor at the first frame - per acre to continue providing all the necessary push and sync

25.10.2009 11:26:00
quote:
:

I always shoot in equal but not to understand how I should help

And then I do not understand what's the problem?
Who prevents exercise RAW-s with the same settings?

25.10.2009 11:35:00
problems as nebylo. . . and yesterday there. . . .
pasted spherical panorama room. . . M mode. .
green wallpaper in some frames netak green on the other. . . frame with black table vapsche out of the general picture. . . . . .
 

25.10.2009 15:31:00


whether I understand you, you are saying that in Rawaha 450D
with the same settings developer ravov - in neighboring frames
panorama - different colors of the same object?

can you get there rabbits caught in the lens?

FAQ: Canon EOS 450D / Digital Rebel XSi Volume III

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