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FORUMS Photography Talk by Genre General Photography Talk 
Thread started 01 Jan 2011 (Saturday) 03:49
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7D and 100-400mm

 
mmackwan
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Jan 01, 2011 03:49 |  #1

Hi guys
am new to photography and loving every bit of it, recently i started photographing osprey's during 8-10am, the sun at the present is very harsh due to summer,
Before i state my problem here are my settings
manual mode, ai servo, auto white balance(also used daylight) afpoint exp, iso400, shutter 1250, f7.1 to f8, when i take a picture the camera metering says its all good right in the middle but the picture are always overexposed, so i started underexposing the pictures is this normal for the camera to do ???
i have a bit of a movement on 7d and 100-400mm and 70-200mm is this normal ???

i hope somebody can help me figure it out.... all help is appreciated..

I have learned a lot through this forum and thanks to all the pro's here.


1D MK IV,7D Grip, 24-105mm f4, 50mm f/1.8, 70-200 f/2.8 IS II, 500mm f4 IS II, canon 580 & 430 EXII

  
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SOK
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Jan 01, 2011 17:07 |  #2

mmackwan wrote in post #11551253 (external link)
when i take a picture the camera metering says its all good right in the middle but the picture are always overexposed, so i started underexposing the pictures is this normal for the camera to do ???

Short answer; it depends.

It helps to understand how your in-camera meter works.

If you point the meter at something dark (a black cat) and then centre the needle, your scene will be overexposed. Similarly, if you point it at something light (a bridal gown) and centre the needle, it will be underexposed.

This is the same if you use Av/Tv/P modes without using Exposure Compensation.

The whole point of Manual mode is that it allows you to use the meter to measure a scene, but having the latitude to work independent of it.


Steve
SOK Images - Wedding and Event Photography Gold Coast (external link)

  
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birdfromboat
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Jan 01, 2011 18:02 |  #3

You have an IS lens there, let it do its job. 1/125 should be useable even handheld with good technique. 1/400 is better, but probably not at ISO 400 in bright conditions. slow the ISO down to be useable in full sun.
try the sunny f16 rule, the old film rules still apply to your very advanced camera and IS lens.


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mmackwan
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Jan 01, 2011 18:02 as a reply to  @ SOK's post |  #4

sorry but my camera does the opposite when i meter a white object it always is overexposed outside during daylight....does this mean that my camera is not working properly ???


1D MK IV,7D Grip, 24-105mm f4, 50mm f/1.8, 70-200 f/2.8 IS II, 500mm f4 IS II, canon 580 & 430 EXII

  
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kingdaddy
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Jan 01, 2011 20:29 |  #5

Check your exposure compensation and make sure its neutral.


6D | 7D | XSI | EF-S 10-22 | EF 50 1.4 | EF 24-105L | 100-400L │ EF-100mm Macro| MT-24EX │580 EXII | Black Rapid RS-5 | lots of Think Tank.

  
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mmackwan
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Jan 01, 2011 21:32 as a reply to  @ kingdaddy's post |  #6

ok let me make things more clear in daylight if am shooting a pelican and have netural exposure in av,tv,or m its always overexposed but if i dial in a -1,-2 exp com then it comes out alright, does that mean my camera has something wrong with it ???


1D MK IV,7D Grip, 24-105mm f4, 50mm f/1.8, 70-200 f/2.8 IS II, 500mm f4 IS II, canon 580 & 430 EXII

  
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kingdaddy
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Jan 01, 2011 21:43 |  #7

mmackwan wrote in post #11555496 (external link)
ok let me make things more clear in daylight if am shooting a pelican and have netural exposure in av,tv,or m its always overexposed but if i dial in a -1,-2 exp com then it comes out alright, does that mean my camera has something wrong with it ???

I would say yes, there is a problem with the camera, only exposure compensation should change the meter in the eyepiece.


6D | 7D | XSI | EF-S 10-22 | EF 50 1.4 | EF 24-105L | 100-400L │ EF-100mm Macro| MT-24EX │580 EXII | Black Rapid RS-5 | lots of Think Tank.

  
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mmackwan
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Jan 03, 2011 21:58 |  #8

Before I take it to canon wanna make sure I am not doing anything wrong, today re-read the manual and found that the auto lighting optimizer was on to STD would that cause the problem (am shooting in raw) will try that and see how I go


1D MK IV,7D Grip, 24-105mm f4, 50mm f/1.8, 70-200 f/2.8 IS II, 500mm f4 IS II, canon 580 & 430 EXII

  
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tzalman
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Jan 04, 2011 04:58 |  #9

Auto Lighting Optimizer applies only to jpgs produced by the camera or by DPP. It does not directly affect RAW data although it may appear to do so by affecting the LCD review display and the histogram and because of this can be misleading, especially if you are developing your RAWs with a third party converter.


Elie / אלי

  
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mmackwan
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Jan 06, 2011 17:40 |  #10

Thanks tzalmsan


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nepali
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Jan 07, 2011 10:51 |  #11

mmackwan wrote in post #11551253 (external link)
Hi guys
am new to photography and loving every bit of it, recently i started photographing osprey's during 8-10am, the sun at the present is very harsh due to summer,
Before i state my problem here are my settings
manual mode, ai servo, auto white balance(also used daylight) afpoint exp, iso400, shutter 1250, f7.1 to f8, when i take a picture the camera metering says its all good right in the middle but the picture are always overexposed, so i started underexposing the pictures is this normal for the camera to do ???
i have a bit of a movement on 7d and 100-400mm and 70-200mm is this normal ???

i hope somebody can help me figure it out.... all help is appreciated..

I have learned a lot through this forum and thanks to all the pro's here.

Maybe you need to play with your metering mode. What is your metering mode set to? If your metering is set to Spot and you are using an off-center focus point, that may be your problem.



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Sparky98
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Jan 07, 2011 13:28 |  #12

I think you should post some pictures so we can see exactly what you are experiencing. I would think that if it is very bright outside and your bird is exposed properly then the sky or any bright background would be overexposed. If the sky is exposed properly the bird should be underexposed and possibly a silohoutte if the sky is the background and is very bright. Are you shooting birds in flight? You give your shutter speed as 1250 and that should be fast enough to stop any camera shake or bird movement for a bird at rest but if the bird is flying then it is possible your panning technique is the problem.

Personally my success rate of BIF is very low. I have found it takes a lot of practice to be able to pan and get a sharp picture and it is something I haven't mastered yet.


Joe
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Snydremark
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Jan 07, 2011 13:39 as a reply to  @ Sparky98's post |  #13

Honestly, it sounds like things are working fine, you just need some time working with it to get used to it.

If you have that much light, though, I'd back down your ISO to 100 and work on your shutter speed right around 1/640 on the 100-400; maybe a little higher, but it generally works fine right around that.

As for metering, the meter is really sort of "dumb"; it tries to set a neutral, mid-tone based on what you're metering. So, if you're metering a scene with a white subject, in direct daylight, and using Evaluative or Center-Weighted metering you're likely to get that white subject over-exposed. If you fill the metering area with that same subject, you're likely to get it under-exposed.

So, knowing what you're shooting, and being the brains of the outfit, you'll learn what situations you need to over/under-expose via manual settings or EC (Av/Tv modes). It's all part of working with any piece of gear, but I wouldn't worry about it, just get out and practice.


- Eric S.: My Birds/Wildlife (external link) (7D MkII/5D IV, Canon 10-22 f/3.5-4.5, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."

  
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outback
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Jan 09, 2011 08:18 |  #14

I see no one has addressed the "movement" issue. Could the mount be letting in some stray light? I don't think movement is normal if you are talking about lens to body fit.


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troutfisher
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Jan 09, 2011 09:47 |  #15

outback wrote in post #11603448 (external link)
I see no one has addressed the "movement" issue. Could the mount be letting in some stray light? I don't think movement is normal if you are talking about lens to body fit.

Interesting,my 100/400 has a very slight (<0.5mm) movement on my 40D,none of my other lenses have this and the 100/400 was new in Dec 2010.But I dont have any problems with it.


Chris
" Age and treachery will always defeat youth and enthusiasm"

  
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7D and 100-400mm
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