December 22, 2014, 10:51:31 PM

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Messages - tron

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16
Third Party Manufacturers / Re: iOptron SkyGuider
« on: December 11, 2014, 11:35:00 AM »
Up to now I have used 14mm, 21mm  and 16-35mm (and once in the past 300mm f/4). The nice thing with this mount is that I can trust it with a heavy setup since the attachment is at its center and it has no need of counterweights.

I would not trust a 500mm lens even on the new device you mentioned mainly because I would fear the excess size would make it prone to accidents...

Anyway a 500mm lens means 1sec exposure tops without any help.

Is the increase of about 10 times enough for you? (this may increase with the help of a good polar scope and precise alignment I guess).

May I suggest the use of a lesser focal length? Say a 300mm f/4 or even a 70-200 2.8?

That way exposure times will increase.

17
EOS Bodies / Re: Canon 5D mkIV
« on: December 11, 2014, 11:21:44 AM »
If they can't deliver better AF than the A7II, there is a whole lot of need for the 5DIV...

What exactly is left to get better anyway with ff phase af? The only obvious difference is the size of the af array, i.e. the spread of the af points to the edges. But looking at all ff cameras, Canon or not, this seems to be either very hard or very expensive to do.

Thus I imagine the 5d4 advances will be different:
* minor fps advancement
* minor advancement in res
* but dpaf and 120fps@hd for video
* 7d2+ fw features (anti filicker, intervalometer, ...)
* 7d2 hw features (gps, sealing)
* 5d3 bugs fixed (slow sd writing, no af indicator while tracking).

The real question for the 5d3's success is if there will be any visible advance in sensor iq, at least to 6d/1dx/7d2 lack of banding and maybe 0,5-1ev better snr. Combine that, and it's solid upgrade like Canon likes it.
+1 I do hope they will leave MPixels the same though and they will concentrate on sensor improvement...

18
Third Party Manufacturers / Re: Leica: Trouble in paradise?
« on: December 11, 2014, 11:18:22 AM »
Not that I could afford a Leica system (I am not even interested in) but this is another reason to stick to my "lowly" DSLRs...


19
First impressions: http://www.dpreview.com/forums/post/54904011

No pictures though, the light was so bad I can't post anything worthy. Maybe tomorrow, if someone else hasn't posted by then.
Thank you very much for your post. When you say that ver II is sharper have you compared your 2 lenses fully open at 400mm?

20
Third Party Manufacturers / Re: iOptron SkyGuider
« on: December 11, 2014, 09:29:53 AM »
The link does not work now. But it does not matter.

A similar one can be easily found: 

https://www.ioptron.com/index.cfm?select=productdetails&phid=cffad01a-797c-4cf4-beb8-a64bc8e09b06

I have something similar the astrotrac. It has the advantage of being able to handle more weight. I am not very fond of its polar scope though.

For these devices keep in mind that with the best polar alighment you will be able to increase the time of exposure by a factor of 10.

No more.  But this is still very usefull (it is a difference for example between ISO 10000 and ISO 1000!)

Another thing they are no good for landscape astrophotography.

A small exception is the ones that can track with 1/2 sidereal speed so as to give you the chance to increase the exposure with no startrails or foreground blur.
My astrotrac does not do this though...

21
Third Party Manufacturers / Leica: Trouble in paradise?
« on: December 11, 2014, 09:03:02 AM »
http://www.dpreview.com/articles/8752612172/leica-m9-users-report-sensor-corrosion-issue

Copied from dpreview site: Leica M9 users report sensor corrosion issue

22
Photography Technique / Re: Share 3x your own advice to yourself!
« on: December 08, 2014, 01:37:06 PM »
1. Do not misplace negatives (I still miss a 4 or 5  36-b/w negative sheets...  >:( )
2. Do not leave gear unattented even for a few seconds (and lose your 40D with lenses in the process...  :( )
3. AFMA (unless Lytro technology is implemented by Canon  :P :P :P )
 

23
EOS Bodies - For Stills / Re: buying suggestion: a 5D3 or 1Dx?
« on: December 07, 2014, 08:16:23 AM »
2015 is the year that the 5D and 1D are expected to be updated.

I expect...

Expected by who?  Lots of people expected the 100-400L to be updated in 2013...and 2010...and 2006.
By CR Guy!  ;D

Oh, like the CR2 for a new 100-400L...back in 2010?   ;)
I cannot guess the future but if I were to give a guess I would say I would bet on an announcement by the END of 2015 and I would expect it by 2016 Spring.

This guess is as good as any other...

But judging from 3.5 years between 5D2 and 5D3 vs. 3 years between 5D and 5D2 I would be more willing to bet on a 4-year span rather than a 3-year one. That and the fact that 5D3 is pretty good  ;)

24
Yes, I got a slim HOYA HD UV filter

25
EOS Bodies - For Stills / Re: For 1dx owners
« on: November 28, 2014, 08:29:47 AM »
For me, a MUST have improvement is 1stop better in high ISO with 18 -20MP. Additional AF cross points and other features are just bonus.

Anything higher than 30MP, I'm out. I don't care about 4k, GPS, WiFi, video etc....I do hope Canon would release a high MP body for landscape and studio shooters. They can call it 3D, 5D4 or whatever, anything except 1DX II.

I agree with most, current 1DX is so DAM good A-Z.
And anything except 5D4 too  :)
High and low ISO improvements are the only things that are necessary for 5D4 (and maybe the latest AF system). I too hope that Canon will not increase the MPixels and make a new body for this.

26
A7s is a little tempting but in my case I would use the adapter and focus manually with some of my best ultrawide lenses.

The reason is: landscape astrophotography.

For that, most of my pictures are taken with iso 10000  (with a 14mm f/2.8 lens).

However, I have invested in 2 5D3s as a general purpose backup solution that some times saves me from exchanging lenses too.

Add to that the fact that I am an amateur that mostly shoots during summer and you can see why I will not get it.

(Plus it has just occured to me that the sum of costs of one of my 5D3s, the a7s and the metabones adaptor could approximate the cost of getting a new 1Dx...)

27
No doubt my next camera will be a sony. Most likely the a9 because the a7 series is a bit slow on the fps while tracking.

I want a small, lightweight camera to accompany my 1DX with me to sporting events. My 5Diii is bulky and heavy and is hard to carry easily all day while lugging the 1DX and 300 combo. Truth be told I could live with the a7s or a7ii as a backup camera but want to see the a9 before throwing down the money.
Interesting! So I guess you will decide to either:

1. depend on the the metabones adapter
  Most likely, in which case I would like to see how the 300mm 2.8 works with the sony adaptor.
  However, in that case it is the weight of 5D3 against the sum of weights of both sony A7 and adaptor  ::) ::)

2. or get a whole new lens system.
 
   NOT likely, expensive and bulkier (the sum of canon and sony equipment).
   In that case the weight of 5D3 is irrelevant.

I would purchase a native FE 35mm prime (or something close) and that would be my secondary camera/lens. I don't want to use a metabones adapter. I would get native lenses. My current need for a second camera is for pre-game, post-game type shots. I use a 300 2.8 on the 1DX during the game. In fact, this combo is together 99% of the time during football season.
This is indeed a lighter combination. However, it is not a backup for 1Dx.  But whether backup is necessary or not is another matter.  I do understand your need for less bulk and weight though...

I don't recall stating I wanted a backup camera for the 1DX. I just a lighter, full frame second body. I have the M and two lenses but that camera just plain stinks at night.
I read: Truth be told I could live with the a7s or a7ii as a backup camera...

28
I'd not worry about compatibility, Sigma has the dock feature that allows you to upgrade lens firmware if any issues pop up.  It also lets you fine tune the AF accuracy with one body.
 
I'd get the lens over the 7D MK II.  Its going be be fine on your 5D MK III.
Correct sorry! Author said Sigma and I read Tamron!

Still, I believe it is too heavy for 600 f/6.3. Just my opinion.

29
I would get the 7DII. Tamron is heavy and may exhibit incompatibilities with future bodies.

30
No doubt my next camera will be a sony. Most likely the a9 because the a7 series is a bit slow on the fps while tracking.

I want a small, lightweight camera to accompany my 1DX with me to sporting events. My 5Diii is bulky and heavy and is hard to carry easily all day while lugging the 1DX and 300 combo. Truth be told I could live with the a7s or a7ii as a backup camera but want to see the a9 before throwing down the money.
Interesting! So I guess you will decide to either:

1. depend on the the metabones adapter
  Most likely, in which case I would like to see how the 300mm 2.8 works with the sony adaptor.
  However, in that case it is the weight of 5D3 against the sum of weights of both sony A7 and adaptor  ::) ::)

2. or get a whole new lens system.
 
   NOT likely, expensive and bulkier (the sum of canon and sony equipment).
   In that case the weight of 5D3 is irrelevant.

I would purchase a native FE 35mm prime (or something close) and that would be my secondary camera/lens. I don't want to use a metabones adapter. I would get native lenses. My current need for a second camera is for pre-game, post-game type shots. I use a 300 2.8 on the 1DX during the game. In fact, this combo is together 99% of the time during football season.
This is indeed a lighter combination. However, it is not a backup for 1Dx.  But whether backup is necessary or not is another matter.  I do understand your need for less bulk and weight though...

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