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Author Topic: Request for Advice: 5D3 AF issues nightphotography  (Read 3612 times)

pedro

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Request for Advice: 5D3 AF issues nightphotography
« on: January 19, 2013, 05:42:54 AM »
Hi,
My 5D3 is a great cam. Coming from the 30D I set its AF by suggestion of my brick and mortar dealer on the center AF point. In 90% of the cases it works great.
But compared to the 30Ds center AF point which was quite snappy even at very distant and dim light in moonless nights, the 5D3 AF is struggling a bit. Still being in my learning curve since August, what are the mistakes by my side while handling my gear.
AF on the moon: no problem.
AF on Jupiter: mostly no problem.
AF on some distant, dimmer light at full darkness...not always working.

Guess I've read about slight issues here, so thank you for any help
Cheers, Peter in Switzerland.
30D, EF-S 10-22/ 5DIII, 16-35 F/2.8 L USM II, 28 F/2.8, 50 F/1.4, 85 F/1.8, 70-200 F/2.8 classic,
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Request for Advice: 5D3 AF issues nightphotography
« on: January 19, 2013, 05:42:54 AM »

J.R.

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #1 on: January 19, 2013, 07:40:43 AM »
Hi,
My 5D3 is a great cam. Coming from the 30D I set its AF by suggestion of my brick and mortar dealer on the center AF point. In 90% of the cases it works great.
But compared to the 30Ds center AF point which was quite snappy even at very distant and dim light in moonless nights, the 5D3 AF is struggling a bit. Still being in my learning curve since August, what are the mistakes by my side while handling my gear.
AF on the moon: no problem.
AF on Jupiter: mostly no problem.
AF on some distant, dimmer light at full darkness...not always working.

Guess I've read about slight issues here, so thank you for any help
Cheers, Peter in Switzerland.

+1

I have similar issues with the 5DIII in very low light situations. Can't say about the 30D but my 7D is also unable to focus in similar conditions.

Maybe we are expecting too much from the AF system.
Light is language!

zim

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #2 on: January 19, 2013, 08:11:18 AM »
AF on Jupiter, seriously?  :o

pedro

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #3 on: January 19, 2013, 08:39:54 AM »
If I am correct, yes. There was a strange big light ball in the nightsky I was able to focus at beneath a Septmeber sky last year. So, I asked at flickr. Well, most of the time I focus manually...So not a big issue under the nightsky.  ;)
30D, EF-S 10-22/ 5DIII, 16-35 F/2.8 L USM II, 28 F/2.8, 50 F/1.4, 85 F/1.8, 70-200 F/2.8 classic,
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J.R.

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #4 on: January 19, 2013, 08:42:26 AM »
AF on Jupiter, seriously?  :o

It's easily visible as the brightest "star" in the sky. AF easily using live view
Light is language!

pedro

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #5 on: January 19, 2013, 09:39:21 AM »
AF on Jupiter, seriously?  :o

It's easily visible as the brightest "star" in the sky. AF easily using live view

yes, it is. Even without LV.
30D, EF-S 10-22/ 5DIII, 16-35 F/2.8 L USM II, 28 F/2.8, 50 F/1.4, 85 F/1.8, 70-200 F/2.8 classic,
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TexPhoto

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #6 on: January 19, 2013, 09:50:59 AM »
AF on Jupiter, seriously?  :o

It's easily visible as the brightest "star" in the sky. AF easily using live view

yes, it is. Even without LV.

Boys AF on Mars to get more candy bars.
Girls AF on Jupiter to get more...

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #6 on: January 19, 2013, 09:50:59 AM »

J.R.

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #7 on: January 19, 2013, 10:18:10 AM »
AF on Jupiter, seriously?  :o

It's easily visible as the brightest "star" in the sky. AF easily using live view

yes, it is. Even without LV.

I've never tried it with the phase detection basically for the reason that the camera is mounted on a tripod and its fairly easy with LV. I engage in Astrophotography only when I have ample time and BTW, Jupiter's not going anywhere in a hurry ;). One other reason I prefer LV is because I don't need to use MLU shooting in LV.
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pedro

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #8 on: January 19, 2013, 10:19:12 AM »
AF on Jupiter, seriously?  :o

It's easily visible as the brightest "star" in the sky. AF easily using live view

yes, it is. Even without LV.

Boys AF on Mars to get more candy bars.
Girls AF on Jupiter to get more...

 ;D
30D, EF-S 10-22/ 5DIII, 16-35 F/2.8 L USM II, 28 F/2.8, 50 F/1.4, 85 F/1.8, 70-200 F/2.8 classic,
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rpt

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #9 on: January 19, 2013, 10:50:11 AM »
AF on Jupiter, seriously?  :o
Oh yes, it does! I was focussing to infinity before shooting star trails and it works great!

sanj

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #10 on: January 19, 2013, 11:29:03 AM »
Pedro.
Use a little flashlight, set the focus on infinity and CHILL.

J.R.

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #11 on: January 19, 2013, 11:36:31 AM »
Pedro.
Use a little flashlight, set the focus on infinity and CHILL.

+1

I've done that a few times but prefer the LV. Probably coz I'm a control freak wanting stuff to be perfect before pressing the shutter button.
Light is language!

sanj

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #12 on: January 19, 2013, 11:56:47 AM »
Yep live view is safer.

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #12 on: January 19, 2013, 11:56:47 AM »

sanj

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #13 on: January 19, 2013, 11:57:45 AM »
I so prefer lenses with 'hard stops' like my zeiss 35 and 15 for this.

J.R.

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #14 on: January 19, 2013, 12:12:50 PM »
Would love to have zeiss glass. Does Canon have any lens with a hard stop? Also, is infrared photography possible on the current DSLRs without a permanent modification of the camera?
Light is language!

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Re: Request for Advice: 5D3 AF issues nightphotography
« Reply #14 on: January 19, 2013, 12:12:50 PM »