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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 12 Jan 2014 (Sunday) 22:46
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Soft images wity EF600/F4 IS2

 
rakesh
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Jan 12, 2014 22:46 |  #1

Recently I acquired 600/F4 IS2 version of the lens.

I'm using it on 5D Mark3 Body but getting Soft Images.

If I use the Lens on Tripod with Hood Mounted then I'm getting a shutter speed of 1/16 or 1/18 with ISO Setting as ISO400 and Aperture as 8.0 which is very slow shutter speed nd because of this images tend to get softer.

As soon as I remove the Hood, the shutter speed changes to 1/100, 1/250 like that which is good.

I tried to do some micro adjustments, and as advised by Canon Engineer, I changed the MF Adjustment to +2 to check sharpness but surprisingly the color or subject changed from Yellow to almost white.

I'm attaching some sample images. All these images are without any processing. Just converted to JPG, Resized for Display.

IMAGE: http://farm8.staticflickr.com/7296/11922115053_4ca4e120e5_o.jpg

IMAGE: http://farm4.staticflickr.com/3724/11922300104_45311b85aa_o.jpg

IMAGE: http://farm8.staticflickr.com/7343/11921845325_3ed6932812_o.jpg

IMAGE: http://farm6.staticflickr.com/5500/11921843775_40e3d818f4_o.jpg

IMAGE: http://farm6.staticflickr.com/5479/11922296984_9491b730ff_o.jpg

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jefzor
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Jan 13, 2014 00:31 |  #2

How does the hood have any influence on the shutterspeed? What exposure mode were you using?

Atmospherical conditions can have a lot of influence on the sharpness, try shooting the moon when it's high, the lower it is, the more athmosphere there is between you and the moon (and potential heat distortion from cities etc).

I don't think the moon shot looks bad, as far as I know, moon shots always need some sharpening.

I'm blaming either Auto-white balance or clouds for the change in colors.

Could you post some 100% crops from another subjects, it's hard to judge sharpness/softness with these samples.


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rakesh
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Jan 13, 2014 00:50 |  #3

jefzor

I'm going for a Bird Photography trip tomorrow and after returning I'll revive this thread if I observe similar results.


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Owl_79
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Jan 13, 2014 01:38 |  #4

Try using Av (aperture prority mode). Shoot af f/4 and ISO800 or 1600 to maximize shutter speed / avoiding motion blur caused by camera shake or subject movement.
Is this your first long super telephoto lens? If so, blurry images are most likely caused by user error - not the lens. You just need to learn how to shoot with that kind of lens - it requires special methods for best results, like using heavy tripod and/or very fast shutter speeds.
That was the case when I had my own long telephoto. It didn't impress me before I got used to it :)

Your moon shot looks good anyway! Don't except tack sharp 100% crops from the moon because there is so much air beetween the moon and camera.
Just make sure it focuses ok (by doing AF micro adjustment work) and enjoy! :)


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rakesh
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Jan 13, 2014 01:47 |  #5

Owl_79

All the shots are using Aperture Priority and shot at ISO 400 and above.

This is not my first Telelens. Earlier I've used 300/2.8, 500/F4 and 600/F4 (All IS1 versions).

Above shots are hndheld but I've fre shots which I took by mounting on Tripod.


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gasrocks
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Jan 13, 2014 13:47 |  #6

Yes, to test sharpness of a lens you need tripod, remote switch, MF, liveview 5x or 10x, some kind of reasonable distance - not too close or far away, reasonable shutter and ISO speed.


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gnome ­ chompski
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Jan 13, 2014 14:12 |  #7

did you use mirror lock up on such slow shutter speeds?


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frugivore
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Jan 13, 2014 16:18 |  #8

Which tripod and head are you using? I think that shooting the 600mm at long speeds requires a very good tripod.

As to the color, take it off auto WB if that's what you're using. It will give you strange colors if white/neutral is not the brightest part of the frame.




  
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rakesh
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Jan 13, 2014 17:45 |  #9

Tripod Used was Gitzo 5 Series and Head used was Wimberley WH200.

No Mirror Lock.


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bobbyz
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Jan 13, 2014 20:16 |  #10

To me 1/16 is too low of a SS. Why not bump ISO. You got 5dmk3.:)


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MalVeauX
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Jan 13, 2014 20:39 |  #11

Heya,

Edit: nevermind.

Very best,


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SunTsu
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Jan 14, 2014 04:12 |  #12

I haven't had my 200-400 for very long, but my little experience from testing sharpness has told me a few things:
- Images of subjects shot at infinity are often what I would call soft. I am not sure why yet, but it's something I've noticed. Try some shots at closer distances like 30 feet.
- Even on a tripod and 2 second delayed shots, I would use a shutter speed of at least 1/100 when testing sharpness.
- If you have access to lighting equipment, use that in a controlled environment.
- I don't deny I'm a pixel peeper, so people may laugh, but I find paper money to be good test subjects for sharpness


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phreeky
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Jan 15, 2014 08:41 |  #13

SunTsu wrote in post #16604068 (external link)
- Images of subjects shot at infinity are often what I would call soft. I am not sure why yet, but it's something I've noticed. Try some shots at closer distances like 30 feet.

That'll be that nasty thing that's keeping us alive - the atmosphere. I live in a tropical climate and it makes things very difficult in the summer where the clearest sky seems to typically be in the early morning, but winter can be quite clear. Don't underestimate the effect of air.




  
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Soft images wity EF600/F4 IS2
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