November 22, 2014, 12:00:47 PM

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Messages - mb66energy

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16
After checking the post of Don, which came up while I was writing ...
True, 40D equals to 26 MPixels for FF sensor size, 600D for roughly 50 MPixels.

My FF compatible lenses perform very well on the 40D and well on the 600D / EOS M so I see headroom up to roughly 50 Megapixels for these lenses at least in the center region of the image and the borders (not the corners perhaps).

I see also the chance that transistions are reproduced better by a higher Pixel count ... not only details.

17
Lenses / Re: DO you correct lens vignetting when sot wide open??
« on: October 30, 2014, 05:11:46 AM »
I see your question as a serious one ;)

Under DPP i corrected it if necessary.
With DxO it is corrected as default.

I will deactivate DxOs default setting to correct vignetting ... because
most images look better with vignetting. It gives the sky a deeper blue,
focuses to the main subject by diminishing the visibility of the border
areas -
except if I need a technically perfect photo of some laboratory
setting or a photo showing a pattern (e.g. autumn leaves on the ground).
And sometimes I use a composition where the main subject is located near
the image borders or corners.

18
Abstract / Re: High resolution Moon image
« on: October 28, 2014, 02:27:07 PM »
Great/Big stuff!

How would it feel to be on the moon and shooting landscapes
and sunrises earthrises?

19
Abstract / Re: Beautiful bokeh! Let me see yours!
« on: October 28, 2014, 02:06:45 PM »
Just these "poor man's workhorses" do fine in the bokeh department, IMO ...

1) 100 2.8 MACRO non-IS @ f/4.0
2) 70-200 4.0 L non-IS @ 200mm, f/8.0, near MFD

That Bee shot is awesome!  Seems like a pretty hard shot to nail.
Agree. Wonderful, well done!

Thanks for your comments!

I checked the file: it was manually focused and only one shot done.
The subject is what we call in german a "Schwebewespe" or literally translated,
a "hoovering wasp". These little animals can stay at the same 3D point
like high quality quadocopters - everything in a mere 50 milligrams package that
doesn't need to recharge a battery on the grid ... wonders of nature!

If you move slowly they stay - I tried to get a nice background by varying the
angle slowly and focusing fine tuning was done by varying the distance to the
"wasp".

The 40D has a very good focusing screen and I was "socialized" with manual focus
cameras in the early 1990ies (the trusty Canon EF) which helped me a lot + I had
some luck to get that shoot too!

(I am really excited by the 7D mark ii which might help to shoot such subjects with
a lot of AF support !)

20
Abstract / Re: Beautiful bokeh! Let me see yours!
« on: October 28, 2014, 10:15:41 AM »
Just these "poor man's workhorses" do fine in the bokeh department, IMO ...

1) 100 2.8 MACRO non-IS @ f/4.0
2) 70-200 4.0 L non-IS @ 200mm, f/8.0, near MFD

21
Lenses / Re: Review: PowerShot G7 X via DXOMark
« on: October 27, 2014, 07:47:27 PM »

The 5D MkII was replaced by the 5D MkIII, and it was a massive upgrade in every respect that the MkII got criticized. Indeed it is probably the best general purpose camera made so far.

How do you think your "landscape work" will benefit from a 50MP 135 format sensor? How does the D810 not fill your needs? Why do you think a 50MP 135 format will touch the IQ in big prints of the 645z medium format 50MP sensor? How does stitching let you down currently?

I know there are a very few photographers out there that will get the best out of a 50MP 135 format sensor, but most of us are kidding ourselves if we think we need it.

When people like Jimmy McIntyre can shoot images like this on a daily basis with a D800 and 60D, and I'll bet you can't tell which is from which without big prints in front of you, I think the 'need' for 50mp is just hype for 99.999% of people.

But I'd love you to prove me wrong..........

IMO 50 MPix have the advantage to dig into an image, e.g. landscape, macro, "townscape" to explore details - one photo for everything. On the other hand I see a strong advantage for the binning of 4 sensor pixels into one RGB image pixel with full color information ...

And this is also true for smaller sensors with better light.

So your 'need' for 50MP is so you don't have to carry a long enough lens for the job (just get a current crop camera to do that, they give you an effective 45MP sensor already), and, to down sample to 12MP to get a colour bit depth no device can replicate or print and the human eye can't discern.

Forgive me if I am not impressed with your arguments.

I'm with Maximilian here, you'd have been better off not hijacking the thread.

No Need to impress someone.

I just like to view images in the above mentioned manner. You haven't understood my point.

Pixel binning for images with red LEDs to avoid artifacts.

No need to call answers of your questions hijacking ...

22
Lenses / Re: Review: PowerShot G7 X via DXOMark
« on: October 27, 2014, 04:34:25 PM »
Canon, do you hear us? We want a 50MP high DR Sony sensor in a 6DII body for 2500$. It doesn't need many focus points, it doesn't need the best low light performance, it doesn't need to be fast. We want many good pixels at ISO64 and an EF mount.

I don't.

What do you need 50mp for in a cheap camera?

So $2500 is a cheap camera???  Anyway, I know exactly what he is looking for...a 2014 version of the 5D2 but with 50Mp for landscape work.

The 5D MkII was replaced by the 5D MkIII, and it was a massive upgrade in every respect that the MkII got criticized. Indeed it is probably the best general purpose camera made so far.

How do you think your "landscape work" will benefit from a 50MP 135 format sensor? How does the D810 not fill your needs? Why do you think a 50MP 135 format will touch the IQ in big prints of the 645z medium format 50MP sensor? How does stitching let you down currently?

I know there are a very few photographers out there that will get the best out of a 50MP 135 format sensor, but most of us are kidding ourselves if we think we need it.

When people like Jimmy McIntyre can shoot images like this on a daily basis with a D800 and 60D, and I'll bet you can't tell which is from which without big prints in front of you, I think the 'need' for 50mp is just hype for 99.999% of people.

But I'd love you to prove me wrong..........

IMO 50 MPix have the advantage to dig into an image, e.g. landscape, macro, "townscape" to explore details - one photo for everything. On the other hand I see a strong advantage for the binning of 4 sensor pixels into one RGB image pixel with full color information ...

And this is also true for smaller sensors with better light.

23
Software & Accessories / Re: Ballhead for Gitzo 2542L
« on: October 27, 2014, 11:59:38 AM »
Just to throw in another option:

http://www.manfrotto.com/hydrostatic-ball-head-with-rc4-rapid-connect-system

I use this one on a SIRUI 3204X and I am very satisfied:
  - very sturdy ball head
  - no visible deviation while fixing the ball after positioning the camera
    with 70-200 + APS-C
  - very low deviation with the 4.6 400 in near horizontal positions
  - the panning is released/locked separately and works VERY smooth - might be usable for
    video but I have to produce a handle to lead the camera well ...

But:
  - choose the exchangeable plate well - I had a lot of RC4s just before I bought that head
  - and is not too compact/light at 730 grams

24
Lenses / Re: Review: PowerShot G7 X via DXOMark
« on: October 27, 2014, 05:40:00 AM »
G7 X seems to be a good move concept-wise but I too observed the not so good corner quality in ONE site, it was  d p re view  if I remember it correctly. We have to wait for more well made comparisons.

For me the G7 isn't interesting - I am very satisfied with the EOS M and the EF 40mm lens via Canon adaptor. It is compact, low weight and delivers great IQ. It's also a movie capable (+ Magic Lantern features) backup camera for my 40D + fits snugly in a lens compartment.

Canon, do you hear us? We want a 50MP high DR Sony sensor in a 6DII body for 2500$. It doesn't need many focus points, it doesn't need the best low light performance, it doesn't need to be fast. We want many good pixels at ISO64 and an EF mount.

Me too! But I would accept a Canon sensor too if it has real 13 bit DR or more ...

25
The best message is IMO: The 7D ii technical image quality isn't much behind other options in terms of crop cameras. It reproduces textures very well despite of the little bit more noise compared to other options.

I have to check only if I
  - LIKE TO WORK with that instrument (probably YES!)
  - need/want the spectrum of capabilities the 7D ii own (YES!)
  - still have lenses for EF(-S) mount (YES!)
  - want to carry the load (900g + lens) (YES! most of the time)

26
Landscape / Re: Fall colours
« on: October 20, 2014, 02:15:35 PM »
After observing that leafs turn rapidly from green to brown in the last decade I have to search for other plants showing reds in autumn. Except the second image of a "german" maple (?) leaf.

27
Lenses / Re: What telephotos do we own?
« on: September 28, 2014, 04:55:33 AM »
I rest my case for a new version of the 400 F5.6 ... it's coming in 2nd as the most popular lens.
New electronics. USM and IS ... latest glass coatings, perhaps a tweak here or there to the optics, a lick of new paint .. oh and the most important issue I think is a closer min focusing distance in line with the 300F4 or the 100-400 and it'll be a winner.
I'm stuck using a 70-200 2.8IS and at times a 2xIII, but wanting the "prime experience" with a clean, light, straight 400.
Not that keen even on the new 100-400, but may only get it for it's close focusing .. if it's the same as the old one at 1.8m. I don;t really need to lug around the extra stuff, as I really just want 400mm
Does sales have to slow down on a lens for Canon to think about a replacement ?
It still seems to sell well ... a friend of a friend only posted two days ago a pic of his new 400F5.6 sitting on the front seat of his car driving home from the shops after just purchasing it.
So for me it's a toss up of the closer focusing of the 300F4 or the reach of the 400F5.6 ... but the bigger issue is both lenses are so old they both are long overdue for a re-vamp ... and I want the new re-vamped models, not going to buy the older version no matter how good they still are, they are due for a new version of both.

Three years ago I was in the same situation: 100-400 or 5.6 400 or wait vor a mark ii version ... I bought the 5.6 400 because the price gone up (1500 Euro) but I had one dealer who sold it for about 1200 Euro. So far it was a reasonable decision because no mark ii version hit the market in the meantime.

Your points are very good: minimum focus distance and missing IS limit the 5.6 400 but on the other hand this sturdy, compact and well designed lens gives you at least a 1 or 2 stop advantage compared to a not so sturdy design.
The IQ is stellar - just atmospheric turbulence limits its sharpness/contrast/IQ moderately to severely depending on the weather conditions/local conditions. So the 100-400 will give you the same IQ in the field most times I think. And I like to have the ability to use f/11 @ 800mm with a 2x TC (mark i) which works very well with this "lens of the 1st hour".

You have the 2x TC so the 4.0 300 might be an option for you with a 7D ii which has AF on centerpoint with f/8.0 @ 600mm ... but: no easy decisions at all ...

Last point: Check IQ under field conditions between your 70-200 with 2x TC versus 5.6 400 if you have access to a 5.6 400 - perhaps the difference isn't that big and you do not need to lug around to much gear.

28
EOS Bodies / Re: Patent: Improved Cooling for DSLRs
« on: September 28, 2014, 04:06:46 AM »
I would translate "heat imaging device" into a pyrosensor equipped camera to take infrared images of heat sources ... but maybe it's a translation error and "hot imaging device" was meant.

Might be 4k but might also be the need to cool the imaging device integrated (hopefully!) electronics to decrease read noise ... or its adressing both?!

29
EOS Bodies - For Stills / Re: Why haven't you left canon?
« on: September 27, 2014, 11:07:11 AM »
1 Image quality most times absolutely sufficient for MY purposes
2 Very good lenses in terms of the "right IQ" as a combination of all parameters
3 Ergonomics and knowledge of its ergonomics
4 Magic Lantern - compatibility: Using FD* lenses on EF-M mount via adaptor (or EF mount after conversion) with ML focus assist systems is easy!



* Just exploring the FD 1.4 50 S.S.C. - not an OTUS but very good just at f/1.4 and excellent from f/2.8 with EOS M (equivalent to 50MPix on full frame!)

Are you using anything special for the  FD - M mount? I have a large collection of FD lenses that are crying out to do something useful and I have an M. I know there are a million FD - M convertors on eBay and most are pretty cheap and there is no glass or real engineering in them, so just wondered if you had a recommendation.

I have the "quenoX FD-EOS M" adaptor - nothing special - for roughly 40 Euro. It has NO optics and a ring to switch to close/open the aperture. No issues until now. Infinity focus is no longer the hard stop - so you have to use focus aids just for infinity. But: It let's you focus to infinity without introducing optics!

One thing that might be interesting for you: It has NO tripod mount on the ring. There is a 10mm long cylindrical section on the adaptor so it might be possible to get something but the adaptor is not prepared for it.

Here a link to enjoyyourcamera.com (I bought it via amazon):
http://www.enjoyyourcamera.com/Objektivadapter/Adapter-an-Canon-EOS-M/Canon-FD-Objektiv-Canon-EF-M-Adapter-z-B-fuer-Canon-EOS-M::6049.html

One hint about focusing:
EOS M isn't the best camera for manual focusing but ... Magic Lantern will help a LOT. It has a live view "high contrast visualisation" mode where coloured dots show the regions with highest contrast - the "sharp" regions. And it can insert a magnified region of the sensor's center. Tipping the shutter release can be used to switch between both modes which work very well.- after a t
EOS M seems to be supported very well - I installed a nightly build from the download section!

EDIT:
1) If you start using an adapter you have to tell the camera that the shutter release works without lens
2) I use Av mode + Exposure lock via
  • button if necessary. Full manual mode doesn't give me useful exposure preview on the display!

30
EOS Bodies - For Stills / Re: Why haven't you left canon?
« on: September 27, 2014, 09:16:22 AM »
1 Image quality most times absolutely sufficient for MY purposes
2 Very good lenses in terms of the "right IQ" as a combination of all parameters
3 Ergonomics and knowledge of its ergonomics
4 Magic Lantern - compatibility: Using FD* lenses on EF-M mount via adaptor (or EF mount after conversion) with ML focus assist systems is easy!



* Just exploring the FD 1.4 50 S.S.C. - not an OTUS but very good just at f/1.4 and excellent from f/2.8 with EOS M (equivalent to 50MPix on full frame!)

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