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Sigma 70-200 OS available from July 23
#22
[quote name='Brightcolours' date='18 July 2010 - 11:38 AM' timestamp='1279445935' post='1091']

I do not mind you saying that at all. And it does not matter if the 70-200 f4 L IS version does better or worse, they both have the same MFD and mag. factor, so if the non-IS does better, it still disproves the rubbish. Anyway, you are talking about "with extension tubes", not MFD normally. And you do have to switch off IS.[/quote]

Well, both actually. And having owned both, IMO the non-IS version did better in this regard, also after switching IS off on the IS version. In some instances I just couldn't get the image to be sharp enough, whatever I tried. Using the 135L with extender (189 F/2.8) was quite a relief in those circumstances.

Quote:I want the EF 24mm f1.4 USM II for that purpose. You can not use the TS-E 24L II with extension tubes, as even the 12mm extension tube pushes the subject past or against the front element. The TS-E 24mm must be shorter that the II version.

I was talking about the 24L Mk I, I haven't tried the Mk II yet. And yes, with teh Mk I at MFD with 12 mm extension tube at full tilt the subject almost touches the front element. Works well, but magnification is still not all that great <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='Big Grin' />.

Quote:I also want to try the voigtlander 20mm for that purpose (with 12mm ext. tube), but not sure how it will behave come wise. I know my 12-24mm Tokina shows horrid coma with 12mm ext. tube.

Adding a tube does increase magnification of the center part of the image, and the shorter the FL, the larger the relative magnification is, so any residual optical aberrations will be magnified too, to the same degree. I don't know whether you will be able to fit a 12 mm extension tube to the Voigtlander 20 mm rlens, and still be able to get an image at all, as it is a FF retrofocus lens. I'll keep my fingers crossed for you <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='Big Grin' />.

Quote:Well, you do see downsized images, and those do show lower sharpness.

I thought so. It is a reason for me to do additional processing for images to be dispalyed on the web, and only use flash at high quality for now. That may help.
Quote:Also, I use the lens wide open, and the 70-200 f4 L USM is not as sharp wide open as the 70-200 f4 L IS.

Except in the longer ranges and at MFD and closer (the latter with extension tubes IOW). At least, that is my experience.

Quote:And yes, the DOF is very very shallow. That is what I am after, shallow DOF and focus on colour and composition, if my images were about sharpness impression, I would stop down to f8 or f11.

But really, I can assure you that the sharpness does not get a big impact from MFD at all with this lens.

As I mentioned, my experience is different than yours is. It is not a big impact, as in big big, but enough that I ended up selling my F/4 IS after experiencingthe results from my 135L, with and without extender and/or extension tubes close to MFD and even more close. I found I stopped using the zoom alltogether. I do realize that that isn't a fair comparison, zoom vs prime, but that is what happened to me anyway <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='Big Grin' />. BTW, I was convinced, until that time, that I would never sell the 70-200 F/4L IS <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='Big Grin' />.

Quote:It is silly, people claiming the Nikon 70-200mm f2.8 VR II does better, as it really cannot even get close at MFD, because of the huge breathing. Especially since I have not seen even ONE comparison showing that. It is like saying, look, the Nikon does a tad better at 135mm than the Canon does at 200mm. Right.

No argument from me about this.



I've seen a comparison somewhere, where people did complain about it. The Canon F/4s don't have any breathing to speak of, AFAIK, and the F/2.8s have a little, but that is within the 5% FL tolerance anyway, so not really a problem. The Nikon goes to 165 mm or thereabouts if I am not mistaken, when fully zoomed in and at MFD, which is considerable indeed.



Kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....
  


Messages In This Thread
Sigma 70-200 OS available from July 23 - by Bare - 07-09-2010, 06:08 PM
Sigma 70-200 OS available from July 23 - by netrex - 07-09-2010, 07:48 PM
Sigma 70-200 OS available from July 23 - by popo - 07-09-2010, 07:59 PM
Sigma 70-200 OS available from July 23 - by miro - 07-09-2010, 08:26 PM
Sigma 70-200 OS available from July 23 - by netrex - 07-09-2010, 08:41 PM
Sigma 70-200 OS available from July 23 - by mst - 07-09-2010, 08:46 PM
Sigma 70-200 OS available from July 23 - by Sylvain - 07-09-2010, 08:48 PM
Sigma 70-200 OS available from July 23 - by Bare - 07-17-2010, 10:04 AM
Sigma 70-200 OS available from July 23 - by Bare - 07-17-2010, 12:19 PM
Sigma 70-200 OS available from July 23 - by mst - 07-17-2010, 03:57 PM
Sigma 70-200 OS available from July 23 - by Bare - 07-17-2010, 06:32 PM
Sigma 70-200 OS available from July 23 - by Bare - 07-17-2010, 08:57 PM
Sigma 70-200 OS available from July 23 - by wim - 07-17-2010, 10:03 PM
Sigma 70-200 OS available from July 23 - by wim - 07-18-2010, 12:17 AM
Sigma 70-200 OS available from July 23 - by wim - 07-18-2010, 12:28 AM
Sigma 70-200 OS available from July 23 - by wim - 07-18-2010, 02:13 PM
Sigma 70-200 OS available from July 23 - by wim - 07-18-2010, 03:05 PM
Sigma 70-200 OS available from July 23 - by mst - 08-01-2010, 08:12 PM
Sigma 70-200 OS available from July 23 - by Bare - 08-02-2010, 12:23 PM
Sigma 70-200 OS available from July 23 - by mst - 08-02-2010, 01:36 PM
Sigma 70-200 OS available from July 23 - by Bare - 08-02-2010, 02:28 PM
Sigma 70-200 OS available from July 23 - by Guest - 08-05-2010, 07:45 AM
Sigma 70-200 OS available from July 23 - by mehigh - 08-19-2010, 07:05 PM
Sigma 70-200 OS available from July 23 - by kennyljs - 08-30-2010, 12:23 AM
Sigma 70-200 OS available from July 23 - by Bare - 08-31-2010, 05:19 PM
Sigma 70-200 OS available from July 23 - by mehigh - 09-05-2010, 08:58 AM
Sigma 70-200 OS available from July 23 - by mst - 09-06-2010, 08:34 AM
Sigma 70-200 OS available from July 23 - by Klaus - 09-06-2010, 09:26 AM
Sigma 70-200 OS available from July 23 - by Bare - 09-06-2010, 09:41 AM
Sigma 70-200 OS available from July 23 - by mst - 09-06-2010, 10:18 AM
Sigma 70-200 OS available from July 23 - by mst - 09-06-2010, 10:23 AM
Sigma 70-200 OS available from July 23 - by Klaus - 09-06-2010, 02:27 PM
Sigma 70-200 OS available from July 23 - by Bare - 09-06-2010, 05:04 PM
Sigma 70-200 OS available from July 23 - by wim - 09-06-2010, 07:09 PM
Sigma 70-200 OS available from July 23 - by wim - 09-06-2010, 07:10 PM
Sigma 70-200 OS available from July 23 - by Sylvain - 09-06-2010, 07:45 PM
Sigma 70-200 OS available from July 23 - by Bare - 09-06-2010, 07:47 PM
Sigma 70-200 OS available from July 23 - by mst - 09-06-2010, 08:45 PM
Sigma 70-200 OS available from July 23 - by Bare - 09-06-2010, 08:57 PM
Sigma 70-200 OS available from July 23 - by miro - 09-07-2010, 08:00 AM
Sigma 70-200 OS available from July 23 - by Guest - 09-11-2010, 04:52 PM
Sigma 70-200 OS available from July 23 - by miro - 09-14-2010, 12:47 PM
Sigma 70-200 OS available from July 23 - by mst - 09-14-2010, 01:41 PM
Sigma 70-200 OS available from July 23 - by mehigh - 09-14-2010, 06:39 PM
Sigma 70-200 OS available from July 23 - by mst - 09-14-2010, 07:34 PM
Sigma 70-200 OS available from July 23 - by miro - 09-15-2010, 07:55 AM
Sigma 70-200 OS available from July 23 - by miro - 09-15-2010, 10:16 AM

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