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Topics - eninja

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1
EOS Bodies - For Stills / [Q] When to not use ETTR?
« on: March 18, 2014, 05:43:51 AM »
I often use Av mode if possible and set my desired exposure 2/3 stop from zero.

When is the scenario, where in, it is desirable set exposure to 0 or negative?

Maybe like on a candle cake, when I want to get standard exposure (exposure 0) out of the candle?

Thanks.

2
Canon General / Accurate Color Capture
« on: March 13, 2014, 09:51:23 PM »
im an engineer working under R&D. im not a rocket scientist. im studying fluorescence of material. Fluorescence is, in my term, when you illuminate a given sample single wavelength of light, the sample absorbs this light energy and in return it glows or gives of light with color.

Now I am using a DSLR camera to capture the fluorescence of a given material, to record it. I don't know how to construct my questions. Many factors: Different Camera, different settings, will produce different color output as seen by naked eye, also depends on the screen, screen settings. white balance?? and etc.

With all of this factors, how can I narrow down, or make these variables constant as much as possible such that i can compare color output, any given time.

What are the factors that affects the color being output by the camera. Also does HSB, (Hue, Saturation, Brigthness) plays important role in this topic?

Thanks.

3
Since I am not a professional, I can not justify purchasing lightroom.

Can anyone advise similar software to lightroom in regards to photo retouching?

I've been using Sagelight, but I am afraid software development is dead.

Thanks.

4
Lighting / On Camera Flash: Direct or Bounce, candid.
« on: June 19, 2013, 11:55:36 PM »
Hi,

When shooting candidly with 85mm or 50mm or below focal length lens,

Do you tilt flash head direct to your subject or use bounce card?
or use a diffuser direct or diffuser upward?

How about for telephoto lens?




5
Lighting / Flash Newbie: Flash Photography Concept
« on: June 16, 2013, 10:03:13 PM »
Can someone enlighten me, I acquired 430ex ii for my 6D recently.

I am using 6D for six months, its my first dslr. I am used to Av mode, auto ISO, minimum shutter speed set.
The camera will meter properly and under or overexpose accordingly base from exposure compensation.

My concept of having a flash is that. The camera will meter the scene automatically as if it wasn't using flash. According to settings. Then the function of a flash is just an addon light to the scene.

But I don't understand what is actually happening when using flash in Av mode:

In Av mode with flash. My shutter speed goes less than the min shutter speed set in the camera.
ISO stuck to 400 (why is this?). I can not control my ambient light.


I know I can use manual, but what I want is the camera is able to meter on the scene automatically, basically use only exposure compensation for ambient and FEC for flash add on. How can I do this.
 

6
EOS Bodies - For Stills / View finder Help: Rule of thirds
« on: May 26, 2013, 11:39:18 AM »
I'm using 6D. Recently, I rented 24-105. Upon reviewing my pics, my composition was not good. I used to have grid lines on my Powershot g12.

Can anyone enlighten me,

How does the photographer apply rule of third when there is no grid?

How they trained themselves to compose nicely using only the diamond pattern focus point?

Or is it that Real Photographer don't use any grid guides at all, but uses their visual skills?

7
Lighting / 270ex II. Any sample pictures?
« on: May 21, 2013, 11:36:57 PM »
Hi,

Can share?

One Ceiling bounce, One Wall bounce, One direct indoor, and One direct outdoor, preferably shooting group of people.

My intention is only to make fill flash, removed shadows in face, not to light whole seen.
I believe 270ex is enough for this. what do you think?
I am using 6D + 28mm 1.8.

Thank you very much.

8
I have a 6D + 28mm 1.8. I want to improve my ISO when taking shots indoor.
I am really looking at 270ex II,. I can't find any real review with sample images.

Will this flash improved my ISO settings from 12800 to like 4000 or less?
Is ETTL performance good?

My usual settings are: Av Mode, Auto ISO, 1/60 min shutter speed.

I shoot portrait or people in groups.

Can anyone share sample group shots taken with 270ex II?

ps. please don't suggest higher model first, since I want to know if 270ex will work or not first.
If really I am convinced that 270 ex will not work, then I will find alternative.

9
EOS Bodies - For Stills / Can't they make 28mm F1.4
« on: February 27, 2013, 12:02:01 AM »
I am sorry, but I love 28mm.
not to wide, not too narrow.

If i want 35 or 50mm point of view. I can just crop it.
cropping is totally fine with me.

But I still want what F1.4 Depth of field could give.
I find 35mm still narrow for my liking and style.

I have Canon 28mm 1.8 + 6D with me.

10
I want to learn from you guys:

Added: What aperture you normally use? when you dont intend bokeh.

In low light,
Up to what ISO you willing to go?
When handheld at 28mm, how low is shutter speed you willing to go?
which camera you refer to?

Mine:
2000
10th-20th
G12

Thanks in advance.

Background:

I got 6D recently, coming from a G12 I was carried away, use Av Mode and set aperture < 2.8, ISO range up to 25600. After Christmas, I checked my pictures and a lot of the shots was in 12800 above. And my G12 old pics looks better, in the past I used manual mode on G12 and carefully not go > 1600 ISO and < 1/30 shutter speed.

11
EOS Bodies - For Stills / 6D wifi app autofocus not working
« on: January 08, 2013, 01:31:30 AM »
I manage to connect to remote shooting my 6D using android.

But when I press the smaller button of the two button.. It does nothing. I expect it to autofocus,
i tried holding it but still it does nothing. I tried using different android phones, but still the same.

Did I miss any setting? or my 6D may have fault?

I want to check forum before I send it to service center.

12
hi did continues shots (3 shots) of the same scene, but when I check the pictures, i notice that the color shade is shifting (different from each other). i use same setting manual mode, fluorescent white balance, fix iso.

Is this normal?

Please see following pictures: 
https://dl.dropbox.com/u/14105504/IMG_0717.JPG
https://dl.dropbox.com/u/14105504/IMG_0718.JPG
https://dl.dropbox.com/u/14105504/IMG_0719.JPG

13
EOS Bodies - For Stills / 6D AF point direct selection Not Working
« on: December 17, 2012, 02:54:06 AM »
Thru Custom Controls, I set such that selection of AF points can be controlled directly using 8-direction multi-controller, without having to press AF selection button.

But when I am composing my shots, I press multi-controller, but nothing happen.
In lock settings, multi-controller is uncheck. Even my unlock switch is set to unlocked.

Does everybody experience this, or is my 6D is faulty one?


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