September 30, 2014, 04:11:16 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - tron

Pages: 1 2 [3] 4 5 ... 123
31
Post Processing / Re: Post processing, coma removal
« on: August 25, 2014, 09:11:36 AM »
Coma test of Samyang 24mm 1.4

http://www.lenstip.com/330.7-Lens_review-Samyang_24_mm_f_1.4_ED_AS_UMC_Coma__astigmatism_and_bokeh.html

It is not coma free but it has much less coma than the Canon.

Reading though:

http://www.lenstip.com/330.11-Lens_review-Samyang_24_mm_f_1.4_ED_AS_UMC_Summary.html

I have some reservations(Quoting from the aboe lenstip link):

"Coma looks practically the same, no matter whether we use f/1.4 or f/2.0."
"Defocused diode images, positioned in the corner of full frame are practically the same by f/1.4 and f/2.0"

To sum up there is some doubt whether this is truly a 1.4 lens. Some findings are explained, some not.

32
Post Processing / Re: Post processing, coma removal
« on: August 25, 2014, 09:06:57 AM »
It wouldn't!

The choices are:  Peripheral Illumination, Chromatic Aberation  (R & B), Color blur, Distortion.

The other corrections are all controlled by the DLO slider, you can't adjust them individually like the ones you listed.
Do you have an example where coma is being corrected at post via DLO?

33
But, to tell the truth a new 100-400L would be an excellent companion to 7DMkii....

34
It is the year of the lens . . .

it´s still not clear to me if canon officially said that or CR guy...
Hmmm, let me put it that way: There is a CR3 that Canon DID NOT say it.

35
Post Processing / Re: Post processing, coma removal
« on: August 25, 2014, 07:25:29 AM »
I am thinking of Samyang 24mm 1.4 but it is not as wide as I would like plus, it is reported having decentering issues...

In addition, compared to my Canon 14mm 2.8L II the advantage is not 2 stops but 1 1/3.

The reason. With 14mm I shoot at 25sec in order to avoid star trails.
With 24mm I would shoot at 15 sec hence the 2/3rd stops less. So subtract this from the 2 stop difference and you have a 1 1/3 stop advantage.

Even so it is not bad but you still have to be satisfied by 24mm view of field. I personally prefer something wider...

36
Third Party Manufacturers / Re: D810 users are seeing spots
« on: August 21, 2014, 12:53:24 PM »
The 5DII problem has been solved via a firmware update (If I recall correctly 1.07). I remember this issue because solving it was a prerequisite for me to get a 5DII...

Now, to defend Nikon, if I had a D810 and I was doing a long exposure I wouldn't even think of using it at crop mode.

If problems can be solved in firmware and companies are willing to do so all is well.

37
Post Processing / Re: Post processing, coma removal
« on: August 21, 2014, 10:41:51 AM »
It wouldn't!

The choices are:  Peripheral Illumination, Chromatic Aberation  (R & B), Color blur, Distortion.
Thanks for the info.  It looks like this is something that you need to get right during the capture unless there's some tool out there that can do this PP.
Exactly! The best solution is another lens as was suggested before.

By the way the Canon 24mm 1.4 has terrible coma.

38
Post Processing / Re: Post processing, coma removal
« on: August 21, 2014, 07:08:01 AM »
It wouldn't!

The choices are:  Peripheral Illumination, Chromatic Aberation  (R & B), Color blur, Distortion.


39
PowerShot / Re: What Else is Coming for Photokina? [CR2]
« on: August 18, 2014, 06:58:32 AM »
So there is a CR2 that we... "will see new products"  ;D ;D ;D ;D ;D ;D

EDIT: This could be a CR3   ;D ;D ;D ;D ;D ;D

40
EOS Bodies / Re: 5D3 No Longer in Production
« on: August 17, 2014, 08:09:59 AM »
I was at a major retailer today (I will leave their name out but it rhymes with 'chest guy') and I was asking them to price match the 5D3 for me. While they were looking it up they pointed out that their system indicated Canon is discontinued.

The system said they will still have the 5D3 in stock through 2017, but could the fact that they are no longer manufacuring new units be an indication that a 5D4 is coming soon than expected? Is this just an errorr on thier part or is this something that is already known to everyone but just news to me?
Honestly, I believe that your retailer rhymes with bed sheet...

41
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 16, 2014, 06:06:44 AM »
The EOS M totally missed the market in the USA.  Even the EOS M2, with its dual pixel focusing, isn't going to hit the USA Markets.
Where did you read that M2 has dual pixel focusing?

42
EOS Bodies / Re: Canon to Make a Big Splash at Photokina? [CR2]
« on: August 10, 2014, 09:48:23 PM »
Just try buying a modern bicycle with no research and see what you end up with.

A tricycle? With 3 wheels it must be an improvement over a bicycle!! ;)

Bah  Unicycle.  2 wheels is soooo 20th century.  Clearly the technology has advanced to the point where the product should be smaller.
I concur, we'll run production on unicycles until we run down stock of the old sprocket-and-chains. When unicycles become the norm we can reintroduce the "retro-cool" bicycle targeting the discerning hipster crowd
Yea, unicycles, unicorns and Canon will make a big splash this year  ;D

43
Lenses / Re: Canon EF 11-24 f/2.8L Coming [CR1]
« on: August 07, 2014, 09:05:32 PM »
I love the 16-35 focal length , but I need the f2.8. So for me I wouldn't mind it if canon released a 16-35 2.8 iii.
Do you guys think that with the release if the 16-35 f4 is means that my dream won't come true?
As I said, I'd love a 16-35 2.8 iii too.  But maybe Canon want to do something else to show innovation and at the same time compete with Nikon.

44
Lenses / Re: Canon EF 11-24 f/2.8L Coming [CR1]
« on: August 07, 2014, 06:40:34 PM »
I was too excited when I read it. This year I have done some landscape astrophotography.

Then I thought:

I have used mostly my 14mm 2.8L II. In very few cases I have used the TS-E 17 (in some cases the corrected verticals were worth the light loss).

This 11-24 will have to be close to perfect to make me even think of it.

The reason is that half of my 14mm 2.8 II shots would benefit from a (future?) 16-35mm 2.8L III (with no coma).

Its hood with combination of a flat front element would protect from flare from non-avoidable car lights.

The 11-24 wouldn't be protected just like my 14. Its only benefit would be a slight  increase in expose time (at 11mm) say from 25-30 sec to 35-40 sec (and hopefully less coma).

45
IPX Standard Code Meanings

That is exactly what we need for cameras and lenses.  I am sure that Canikon would be very resistant to submitting their products to such a standard.
So you mean that instead of producing weather resitant bodies, they are ... IPxx resistant companies ?  ;D

Pages: 1 2 [3] 4 5 ... 123