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Messages - heptagon

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Lenses / Re: Quality control issues with the 24-70 L II?
« on: September 21, 2012, 02:54:51 AM »
For the price of L-Lenses, Canon should do 100% testing. Especially early in the production.

TDP usually does a pretty good job in testing lenses so i guess that the second lens really shouldn't have been sold.

Lenses / Re: Quality control issues with the 24-70 L II?
« on: September 19, 2012, 03:52:21 PM »
Something seems off.

True, there was some image misordering or something really strange about lens 2...

Lenses / Quality control issues with the 24-70 L II?
« on: September 19, 2012, 02:16:16 PM »
These two lenses should look exactly the same:

At the short end one is better, at the long end the other. But why? They should both look best for all focal lengths and never have passed the quality control.

Maybe the optical design has such low tolerances that Canon can't make it work properly and this was the reason for the long delays.

EOS Bodies - For Stills / Re: raw processed in camera ...better noise?
« on: September 05, 2012, 06:30:14 PM »
The RAW file should contain all information available about the picture, so an external program could produce identical results.

If you look at recent high ISO JPEGs you will see a loss of detail which can be attributed to algorithms which "blur" the image in order to reduce noise. Since blurring confuses noise measurements it is hard to get an objective measurement on the noise level in JPEGs.

Use your own eye to decide if it works good for you.

EOS Bodies - For Stills / Re: Should I stay with Canon or moving to Nikon
« on: September 05, 2012, 01:52:08 AM »
Think about what you will shoot and then look if there are good lenses you can afford.

EOS Bodies / Re: Nikon user Swapping to Canon with a 5D3
« on: September 02, 2012, 06:14:13 PM »
With a 21/22 megapixel camera you can make prints in the range DIN A2 and you can crop in. The pixels on the D800E sensor are very small. If you have small pixel, then you have normally more noise, less light sensivity  and a poorer image quality. Same you get if you put 24 megapixels on an APS-C sensor.
But the pixels of the D800 are better than the Canon pixels. Especially at low ISO they have lower noise.

Sure, but the Canon 1.4x will also AF just fine with an f/4 supertele. My question is will the Kenko 2x allow AF with a MkII f/4 supertele on a 1D X...

Bonus questions:
Will it work at low light? and with the outer focus points?

Bob from lensrentals wrote that the F/5.6 focus points around the center are more accurate than the F/2.8 focus points for some lenses. (Odd, but that's how it is.)

Lenses / Re: Canon EF 24-70 f/2.8L II Has Made its Way To Retailers
« on: September 02, 2012, 03:49:52 PM »
I guess that we need to start rumors about the Mark III now. 
It will have 5th generation IS for sure :D

Pff..the 5th gen IS is going to be a total fail.  I'm going to wait for the 6th gen.

In that case I'm rooting for the 7th gen ;D

Sorry, to break it to you but 7th gen has FX mount.

They have focus stacking, but not bracketing.
... should be trivial to implement, did you do a feature request on the new forum's section?
I didn't but someone else did it for me :)

If they only would provide focus bracketing, i'd use it often.
They've had it for over 2 years.  Great feature for focus stacking.
They have focus stacking, but not bracketing.

Stacking is when you choose a start and end point.

Bracketing is when you autofocus and take additional pictures ad +-1, 2, 3 focus steps from that point on. As far as i know they don't have this feature.

If they only would provide focus bracketing, i'd use it often.

Lenses / Re: 100mm f/2.8L IS vs 70-200mm f/2.8L IS II for Macro
« on: August 19, 2012, 01:14:15 PM »
Well, you could also go with the Tamron 90mm macro. It's much cheaper and does take 1:1 images at f/4 pretty well if you need that. Otherwise often you don't really need an 1:1 macro and the 70-200 with or without extension tubes will do the job.


Which has better IQ the 7D+70-200+1.4 TC III or the 5D3+70-200+2 TC III?
How much faster would be the auto focus for the 7D setup?
The 7D has a higher pixel density and the 1.4 TC has better contrast and higher F-stop, so that would mean sharper pictures. I don't know about noise though but i guess after all it will be better than the 5D setup.

Focusing with the 1.4x should take two times as long as without TC and with the 2x it should take four times as long. (from heresay) I have never seen actual measurements on that though. Both setups still might be fast enough for you. If you can pre-focus it's no big issue but if you need focusing shot for shot in a series it might be just too slow.

EOS Bodies / Re: Canon Rebel T4i/650 Recall (Again)
« on: August 14, 2012, 04:53:26 PM »
Should I cancel my 24-70 mrk II that I pre-ordered?????
It surely won't fit on a D800.

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