panorama software,virtual tour software
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Joined: 2008-06-18
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2008-06-18
#1

360 Newbe with starter questions

I shot these photos with my Nikon D50/Sigma 8mm Fisheye lens/Kaidan QuickPan rotator on a Manfroto tripod.

The house lacked some lighting and I shot them with a setting of ISO200 with f4.

The photos came out quite dark and changing the settings the photos came out with a lot of grain or digital noise.

Any suggestions?

View photos.
http://cleardesigngraphics.com/forum.html
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2008-06-18
#2

Hi CDG,  welcome to the forum

hmm  yes I can see the noise.

Noise is a function of the sensor.  The lower ISO the better.  The Canon 5d has an ISO 50.

Sigma 8mm f/3.5 recommend f/8  and Av aperature priority let the shutter speed determine the proper exposure.   OR.. use f/8 and average the metering shutter speeds at the 4 click stop locations.. then enter the average shutter speed  value in manual mode.

You can also try auto exposure value bracketing (AEB) say.. EV -2,0,+2 then use some software like Panoweaver 5 or HDRsoft Photomatix.  That might remove some of the noise presents.

IF you shoot RAW, I think Photoshop CS3  Adobe Camera Raw 4.4.1 converter has some color noise reduction functions.  AND you can also remove the Sigma 8mm chromatic abberation.  digital images are red/green blue.  The red layer sometimes is off set by 1 or 2 pixels.  Adjusting the red layer so that ALL RGB pixels line up properly makes the image sharper.

Noiseninja removes excessive noise.


/s/
Dave
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2008-06-18
#3
Hey CDG2008,

Good talking with you today. I do hope with what we spoke about along with Dave's response will get you headed in the right direction. As you noted, I had this same problem. I will go ahead and add to this with what we discussed over the phone. A severely underexposed image will create HUGE AMOUNTS of noise. I would suggest going back to the property and re-shooting with the setup that Dave has provided. Also, remember to set the focus ring on the sigma 8mm to the figure 8 (infinity) setting as we discussed on the phone. Don't hesitate to let us know if you need further help.

bp
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2008-06-18
#4
I actually talked to pixelator earlier today and yes, I agree that I need to try either bracketing or the higher shutter speed.

I tried using Itellishapen and it helped a bit but the color is still off. I found it better to use vs. noise noiseninja.

Incase your interested, look at http://www.fredmiranda.com/, they have a lot of photoshop plugins.

I am hoping to reshoot these photos and take a bit more time.

The house is not very well lit, and has high ceilings.

If you have small rooms, such as a bathroom, do you still do a tour on that?

Any other segestions? I know this is trial by error, but any advise is welcomed.

Thanks in advance.
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2008-06-19
#5

Morning CDG and Pixelator

Things to avoid

floor, ceiling and wall tile

standing in the center of rooms or staircases - shoot offset 

mirrors

bright windows

ANYthing moving

If I can think of anything else.. I will return.

 


/s/
Dave
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2008-06-19
#6
Quote: Originally posted by CDG2008 on June-18-2008

If you have small rooms, such as a bathroom, do you still do a tour on that?

Thanks in advance.


I charge for each pano, so yes do the bathrooms. MORE $ for you

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2008-06-19
#7
Quote: Originally posted by CDG2008 on June-18-2008
I agree that I need to try either bracketing or the higher shutter speed.

Thanks in advance.


You need to use a slower shutter speed to let more light in. When you bracket don't forget to take a look at photomatix for blending the images.

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2008-06-23
#8
Dave you noted above not to set up in the middle of a room.  You said stand offset. Can you explain why?
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2008-06-23
#9
Dave instructed me of this probably 3-4 years ago. Setting up in the middle of the room will cause you big time head aches as there is usually a light above. Whether it is a light or ceiling fan you are asking for stitching problems.


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2008-06-23
#10

Question was Why offset room setup?

Avoid room center
1. Typically an item of interest like chandelier or room fan is in center of room and all you would see is up view of the object.
2. Other objects are in room floor center requiring time to relocate.
3.  I have had poor stitching results in the zenith area with out taking a 5th UP view.
4.  Without a tape measure, you probably won't shoot exact room center anyway.

Off set benefits,
1. Imaging will include full height of chandelier or room fan.  Turn room fan ON  to show fan blade desireable movement blur.  Helps avoid trying to stitch static multiple fan blades together.
2.   When we shoot, we try to keep at least a 3 foot [1 meter] clear zone around the tripod feet. Creates a clear walk space during camera rotation.   For us, we usually find clear space zones in about the 1/3 - 2/3rd area of the room.   This comes from people living space.  Furniture [couches and chairs] usually is along the room walls.
3. Object stitiching issues usually occur in the bottom 20% of the image top and bottom.  Maintaining the 3 foot [1 meter] tripod clear space assures object stitching issues reduction.
4. Square room center setup the room ceiling height will be somewhat equal heights around the image horizon.  Symetrically room setup is ok for special effects. 
5. Offset room setup creates a visual variation in wall /ceilings heights and captures the occasional chandelier/ room fan as well as an opportunity to view through an open door way into the adjacent room.


/s/
Dave
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