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Messages - tassosl

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1
Lenses / Re: Any difference bw used and new 24-105mm lens?
« on: April 05, 2013, 03:32:59 AM »
As reported (by me) here: http://www.canonrumors.com/forum/index.php?topic=12463.0
as well as in this: http://www.dpreview.com/forums/thread/3365069,

there was / is  a bunch of 24-105 manufactured during 2012 that had a faulty board that played tricks to the lens IS.

Before deciding to keep one or the other, make some test to the new one as described on those threads.

2
Technical Support / Re: Weird behavior of my EF 24-105 L
« on: February 25, 2013, 05:22:48 AM »
I received a new EF 24-105 L lens some days ago from the seller and been testing it since.

Serial no is 470xxxx. The IS works as expected at all apertures on both my 5DII and 40D :).

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Technical Support / Re: Weird behavior of my EF 24-105 L
« on: January 21, 2013, 10:23:50 AM »
I agree with you, see also:

http://forums.dpreview.com/forums/thread/3365069
http://forums.dpreview.com/forums/thread/3338242
http://forums.dpreview.com/forums/thread/3226771
http://photography-on-the.net/forum/showthread.php?t=1193827

In one of the above threads someone states that a replacement of a circuit board by Canon solved the problem, It seems that his most difficult problem was to convince Canon that there was a problem ...

4
Technical Support / Re: Weird bhavior of my EF 24-105 L
« on: January 21, 2013, 07:13:28 AM »
The manual states that IS should be switched off when using a tripod, so my results and therefore your result reflect what the manual says. 

Thanks for your reply. I have read the manual and it states that IS should be switched off on a tripod in order to preserve battery power, because the IS on a tripod is not useful. But it is really weird to produce such a blur, isn't it ?

I think that either handheld or not, the IS should help achieve better results with the low speeds and not make things worse, so sth is not OK here.

5
Technical Support / Weird behavior of my EF 24-105 L
« on: January 21, 2013, 06:25:20 AM »
Hello to the Canon Rumors community.

I was shooting with my new 24-105 indoors in relatively low light, so I had IS switched ON. I could hear it hum when the shutter was pressed half way and stopping some instance after the click.

After I clicked, the image was unexpectedly blurry  (shutter speed was around 1/20). I tried it with IS off and the image was quite better!

When at home, I tried more combinations and my findings are:

When the IS system is switched on the photos come out blurry, as if they have an idol. This is manifested mainly for low shutter speeds (eg. 1/5, 1/10, … 1/50) and is more prominent with longer focal lengths (eg. 70 105mm). When I shoot the same scene with the same conditions and the same camera settings but with the IS system switched off the photos come out clearer / sharper. It should be the other way round.
However, when aperture is set to f4 (lowest setting) the IS works as it should. For all other apertures, it does not.

I tried this on two different EOS bodies (5DII and 40D) and it shows the same problem. All my other lenses with IS work as expected.

Even on a tripod, the IS gives me way worse results than when switched off. (IS on a tripod is not necessary, I tried it for experimentation).

As an example, I post two photos taken straight out of the camera (only crop - actual pixels) s1/10, f6.3:
IS on:
IS off:

Lens serial is 43xxxxx, Canon date code is: UA0427

Has anyone encountered this behavior?

6
Canon General / Re: Remote Shutter Release for Canon 5D3
« on: December 10, 2012, 01:05:23 AM »
I'm using the Pixel TW282 (http://www.amazon.com/TW-282-N3-Wireless-Remote-Control/dp/B004DR90PM/ref=sr_1_4?ie=UTF8&qid=1355119168&sr=8-4&keywords=pixel+tw282) with the 5DII and the 40D.

Works great as wired (no battery needed) as well as wireless.

It can do interval, bulb long exposures, timed etc. It has interchangeable cords so can be used with most kinds of DSLRs and compacts.

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