August 22, 2014, 10:05:17 PM

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Messages - Kathode-Ray

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1
Reviews / Re: DxO reviews Sony A7s: king of low light photography?
« on: August 07, 2014, 03:03:54 AM »
Well said. No need to add more.

2
FWIW, I got a Kenko 1.4x Pro 300 DGX recently, to test it with my 70-200L 4.0 IS. I was wondering if a little more reach could stop me from buying the 70-300L in the future...

Turns out the Kenko is holding up quite well. AF is quick and without trouble on my 6D. There is some loss of contrast and sharpness & detail, which is predictable, but it's very acceptable. So I did a little comparison between a 1.4x @ 200mm shot, and a 200mm shot cropped to the same FOV, and upscaled to the original resolution.

Outcome is that the cropped & upscaled shot is looking better (sharper, better detail) than the one with the 1.4x...
So this teleconverter is going to be up for sale again!

3
Reviews / Re: DxO reviews Sony A7s: king of low light photography?
« on: August 06, 2014, 01:21:23 AM »
Thanks for reminding me, I almost forgot!

A bit is a bit, right?

4
Reviews / Re: DxO reviews Sony A7s: king of low light photography?
« on: August 05, 2014, 06:44:04 AM »
This guy really doesn't get it... it's hopeless!

5
Canon General / Re: What do you Cheap Out On?
« on: July 29, 2014, 02:49:43 AM »
Bummer on the AC...

I went cheapo on:

- batteries, bought some chipped chinese clones and they work perfectly
- battery grip, I don't need the weather sealing, got the Meike grip. Works great!
- IR remote
- center-pinch lens caps
- lens hoods

Main reason for getting the cheapo stuff: I think Canon accessories are way overpriced.

6
Third Party Manufacturers / Re: DXO uh-oh?
« on: July 25, 2014, 06:54:35 AM »

Read the quote on DxO's web page:

"Here is a sample of some of our clients."

It doesn't say that those listed are DxO's only customers. It also doesn't say those listed are the top ten DSC manufacturers. It just says that they are *some* of DxO's customers. So Canon could well be a customer of DxO and if they were, then the statement on DxO's webpage is still true.

This is sooo sad...

7
EOS-M / Re: Canon EF-M 55-200 f/4.5-6.3 IS STM Gets Official
« on: June 17, 2014, 03:30:05 AM »
YESSSS, finally a tele for the M! Great news.

But... is that a plastic lens mount I see on the NZ website?? Or just black metal?

8
Lenses / Re: What was your first L lens?
« on: June 06, 2014, 09:05:52 AM »
Like many, my first L-lens was the 70-200mm f/4.0 USM. Amazing quality and sharpness for the money. I bought it not very long after I got my first DSLR, a 500D. Paired nicely with the 17-55mm f/2.8 IS USM.

Next came the IS version when I upgraded to a 60D. I still use it today with my new 6D :-)

Ray

9
... unless you're shooting faster lenses than f2.8 because for these it's got only non-cross precision, alas, "best" is a term to be better avoided when comparing tech items that perform very differently in different situations.

Where does it say that? Seems to me that the center point is cross-type from f/1.0 to f/5.6.

From the 6D manual:

Maximum lens aperture: f/3.2 - f/5.6
Cross-type focusing (vertical and horizontal lines detected simultaneously) is possible with the center AF point. The other AF points are either vertical- or horizontal-line sensitive.

Maximum lens aperture: f/1.0 - f/2.8
Besides cross-type focusing (vertical and horizontal lines detected simultaneously), the center AF point can also perform high-precision, vertical-line sensitive AF. The other AF points are either vertical- or horizontal-line sensitive.

10
It's great to hear that your 6d is working fine, but imho unless your 6d has another sensor array this simply means you're lucky (or didn't look @100% crops) - with wider apertures, the 6d af is f2.8 non-cross and falls back to f5.6.

Seems to me the center-AF point is always cross-type as long as the max. aperture is wider than f/5.6.

From the 6D manual:

Maximum lens aperture: f/3.2 - f/5.6

Cross-type focusing (vertical and horizontal lines detected simultaneously) is possible with the center AF point. The other AF points are either vertical- or horizontal-line sensitive.

Maximum lens aperture: f/1.0 - f/2.8

Besides cross-type focusing (vertical and horizontal lines detected simultaneously), the center AF point can also perform high-precision, vertical-line sensitive AF. The other AF points are either vertical- or horizontal-line sensitive.


11
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 11:57:38 AM »
Yep, that's the same one. I got it for under 10 bucks.

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Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 11:29:19 AM »
E-bay, look for 'Canon EMF AF chip' or 'AF confirm chip' if you don't need the EXIF data.

13
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 09:18:40 AM »
Ok, thanks. I think i'll check it at the store with another one to see how that one feels.

14
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 06:32:51 AM »
Just finished chipping my 14mm with a Canon EMF AF chip :)

I had to make a spacer to get the chip's contacts to the correct height, but after that installation and configuration was very easy.

Works like a charm! Very handy to have aperture and focal length data in EXIF. AF confirm and AF adjust also works, but because the DOF is so large there is quite a lot of margin. Live-view x10 works better :)

I find the focus ring a but spongy, there seems to be a bit of a dead area before it catches and changes focus, is that normal?

15
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 09, 2014, 01:46:30 PM »
The new one has the 'UMC' coating for better flare reduction.

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