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Messages - Frage

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1
Third Party Manufacturers / Re: Sigma 24-105 f/4 DG OS Discontinued
« on: January 22, 2015, 02:24:47 PM »
Pitty... I find Sigma very customer-friendly

2
EOS Bodies / Re: Global Shutter Coming to Canon DSLRs? [CR1]
« on: January 22, 2015, 02:21:30 PM »
What's the point of having 30fps when you have video shot at 30fps?  Doesn't the 1DC cover this?  Or is this basically what the mirrorless cameras have, just faster? they have very fast frame bursts..  slightly confused?
its shutter speed will typically be roughly 1/frame rate, or at least somewhat slow...  so you get a lot of blurred shots.   taking 30fps of 1/8000th second shots is another thing entirely.

Shutter speed is a very good point, but I do not believe 1/8000th will be possible by now.

3
EOS Bodies / Re: \
« on: October 13, 2014, 03:28:12 PM »
This video is not new anymore, right?

How should the user choose where to focus in the frame while capturing video?

4
EOS Bodies / Re: Scott Kelby Does a Field Report on the EOS 7D Mark II
« on: October 08, 2014, 07:40:53 PM »
Is it even legal the way these 3 treat their audience?

Put a model in a white dress in a dark building under perfect controlled light conditions and say is great camera for wedding photography.

About WiFi: "You don´t have internet in your camera". WTFFF???

This "review" can´t be taken seriously.

5
Canon General / Re: seeimpossible.usa.canon.com?
« on: October 05, 2014, 06:18:36 PM »
a 15 Stops DR Camera strap (?)

6
Lenses / Re: Canon APS-C<Speedbooster<EF Lens. Possible?
« on: September 23, 2014, 10:56:03 PM »
Hi people!

I am sorry if this a stupid question but I have to ask in order to learn.

Is possible such a combination?: A Canon crop camera with a (I think not existing)speedbooster and any EF lens in order to gather the "extra" light the lens is providing and the sensor, due to its smaller surface, is not able to use. Would it improve APS-C sensor ISO performance?

Thanks in advance and sorry if it is a completly dumb question.
Hi,
    Speedbooster is basically a focal reducer. IMHO, it's had nothing to do with sensor size as long as the original lens produce an image circle that can cover the sensor, but focal reducer will usually reduce the distance where the image is focus on, so it's difficult (if possible) to maintain flange focal distance of any lens and mount of the same type. That's why speedbooster only appear for SLR lens to mirrorless mount, so speedbooster for EF lens to EF mount might not be possible, but speedbooster for EF lens to EF-M mount is possible.

    Have a nice day.

So if Speedbooster (SB) is a focal reducer then

(Wikipedia)
Quote
where f is the focal length, and D is the diameter of the entrance pupil (effective aperture). It is customary to write f-numbers preceded by f/, which forms a mathematical expression of the entrance pupil diameter in terms of f and N.[2] For example, if a lens's focal length is 10 mm and its entrance pupil diameter is 5 mm, the f-number is 2 and the aperture diameter is f/2

Does really work like that?

7
Lenses / Canon APS-C<Speedbooster<EF Lens. Possible?
« on: September 23, 2014, 09:32:25 PM »
Hi people!

I am sorry if this a stupid question but I have to ask in order to learn.

Is possible such a combination?: A Canon crop camera with a (I think not existing)speedbooster and any EF lens in order to gather the "extra" light the lens is providing and the sensor, due to its smaller surface, is not able to use. Would it improve APS-C sensor ISO performance?

Thanks in advance and sorry if it is a completly dumb question.

8
Portrait / Re: Can we identify this man?
« on: September 21, 2014, 03:14:45 PM »
If someone needs a law to tell them that this is wrong, they shouldn't be out in public unsupervised.

Jim

Well said! For some people only laws and punishment are the limits for their morale.

9
PowerShot / Re: The New Canon PowerShot G7 X
« on: September 15, 2014, 06:16:16 AM »
Quote
Lens conversion 24-100mm F1.8-2.8

This might be not completely accurate. Shouldn't we multiply the aperture as we do with the focal length?

Correct me if I'm wrong please.

10
LOL!!!

Just like my extern HDD.

11
Lenses / Re: The New Canon EF-S 24mm f/2.8 STM Pancake
« on: September 11, 2014, 08:55:10 AM »
Nice lens, but "shame" it is s EF-S

12
Holly mother!

Quote
South America, Mexico, etc.


I am from etc. I guess, whatever that means. #AllTheSame

13
Pricewatch Deals / Re: 7D European Deal...
« on: July 30, 2014, 08:44:09 AM »
I wouldn´t buy here. Grey import, no warranty, and custom payments. A real head ache.

14
How is supoused to be good for video a zoom lens (EF-S 10-18 f/4.5-5.6 IS STM) with no constant max. aperture?
Am I missing something? Please do not tell me "you shouldn´t zoom while making videos". ;)

15
How relevant could be the fact that Canon is the main sponsor of the World Press Photo 2014?

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