zdechlypes

Lives in Czech Republic Czech Republic
Has a website at petrkoval.cz
Joined on Aug 28, 2009

Comments

Total: 10, showing: 1 – 10
On article The Canon that can: Canon EOS 80D Review (712 comments in total)

IMHO there is no difference in ISO invariance between 7DM2 and D80 up to 3 stops. The older 7DM2 is even a bit better. Yes, D80 is slightly better above 3 steps. At 4 steps is the difference about 0,5step and at 5 steps maybe about 0,75 step.
If I compare Nikon 5500D to D80, the difference is at least 2,5 steps (maybe 3)... Yes, Canon improved the ISO invariance performance but Nikon is still a mile ahead.

Link | Posted on Apr 29, 2016 at 05:19 UTC as 64th comment
On article Canon EOS 5DS R added to studio test scene comparison (518 comments in total)
In reply to:

zdechlypes: Downloaded some RAW files @ISO100 from different bodies, compared them in LR, did few tests (exposure increasing +5EV, …) and have to say, it´s better than I expected (from my point of view). Good job Canon. Would like to see soon some similar tests with D5MIV. :-)

I´ve got Canon gear and compared 5DM2/5DM3 and 5Ds R and there is definitely a progress. Especially, when you zoom out to get 21MPx view. In this case the 5Ds R is closer to D810/D750 in exposure test then to the legacy 5DM2/5DM3 bodies. The gap between D810/D750 and new 5Ds R is not anymore soooo huge (from my point of view).

Link | Posted on May 7, 2015 at 22:41 UTC
On article Canon EOS 5DS R added to studio test scene comparison (518 comments in total)

Downloaded some RAW files @ISO100 from different bodies, compared them in LR, did few tests (exposure increasing +5EV, …) and have to say, it´s better than I expected (from my point of view). Good job Canon. Would like to see soon some similar tests with D5MIV. :-)

Link | Posted on May 7, 2015 at 14:26 UTC as 22nd comment | 3 replies

My personal experience is as follows:
- the SW was horribly unstable
- source and intensity of the light must be always the same,
- distance to target should be also the same or given distance to compare identical or different lenses,
- make sure, no one is walking around to reduce even the smallest vibrations.

Nevertheless, I found the SW useful:
- to find „sweet spots“ of my lenses (center part of the picture only)
- to compare quality of MINE LENSES
- to check MFA (it really works)

I am personally a bit sceptic if someone can compare results for the same lenses as there is a huge difference in results in case you shoot from difference distance and under different light sources.

… but going outside, perform real world samples at different F stops and compare everything on screen is in the end better method. :- )

Link | Posted on Mar 26, 2015 at 11:12 UTC as 10th comment

There is definitely a market for both 50Mpx versions. Especially, with 11-24 lens this might be a dream combo not only for pro landscape photographers. Honestly, who shoot constantly over ISO6400?

I will personally looking forward to see some samples at 11mm and 14mm, where distortion might less pronounced and if the corners will be as sharp as at N14-24mm…. well then there is no reason to buy N14-24 for Canon bodies finally.

Nevertheless, I am giving to Canon most probably the last chance to come up with a ISO invariant body (5DMIV ?), otherwise, there is no reason (for me) to stay on the same board. Canon, please wake-up!!!

Link | Posted on Feb 6, 2015 at 08:38 UTC as 39th comment
On article Nikon D750 Review (2006 comments in total)
In reply to:

zdechlypes: I am Canon 5DM2 owner and have just recently found about the term "ISO variant/invariant". Canon is ISO variant and I know it very, very well ... unfortunately.
I did not know that Nikon is soooo much better. I am about to buy 5DM3 as the prices are getting better but not able to switch as I had heavily invested in L lenses, flashes and other Canon stuff. It would be bloody expensive swap. :-(

Good job Nikon!

The issue is that I shoot a lot in dark places with high contrast (handheld) and I have already somehow accepted that I am not able to pull up the dark part of the pictures to keep the quality on a reasonable level.
Canon 5DM3 is definitely great camera and there is a probability I will buy it in the future. I am shooting 50k+ images annually and I know what mine priorities are and what exactly I need from my gear. If next, hopefully soon announced Canon body won´t switch from ISO-variant to ISO-invariant version, well… then I have a feeling, Canon have a problem. Especially, when you download both images from page 13 (RAW and NEF) to LR and see what everything you can get from NEF…. As written in the review: “The Sony-designed sensors capture an incredible amount of detail in the shadows and, when 'pulled up', make my Canon EOS 5D III look like a dinosaur.“

Link | Posted on Dec 20, 2014 at 20:20 UTC
On article Nikon D750 Review (2006 comments in total)

I am Canon 5DM2 owner and have just recently found about the term "ISO variant/invariant". Canon is ISO variant and I know it very, very well ... unfortunately.
I did not know that Nikon is soooo much better. I am about to buy 5DM3 as the prices are getting better but not able to switch as I had heavily invested in L lenses, flashes and other Canon stuff. It would be bloody expensive swap. :-(

Good job Nikon!

Link | Posted on Dec 20, 2014 at 15:30 UTC as 409th comment | 5 replies
On article Zeiss announces 'no compromise' Otus 55mm F1.4 (488 comments in total)

I cannot imagine how some can manually focus below f2 on a distance up to 2 meters on my 5dm2.... Still have one old (a bit radioactive) 50mm @1.4 manual lens, where the rate of sharp pictures was below 10%.

Link | Posted on Oct 7, 2013 at 12:51 UTC as 104th comment | 3 replies
In reply to:

Walter Brewster: Well, bearing in mind you just have to take Adobe's word that the whole range of products will continue to improve what incentive do they have to do that if the money automatically flows in? Would you trust that to a company whose CEO answers questions in this manner? http://www.youtube.com/watch?v=juM46ny1WhM

Walter Brewster - thank you for the link above. This is MUST HAVE seen video to anderstand what person controls the Adobe. Very, very sad (and a bit funny too).

Link | Posted on May 10, 2013 at 11:28 UTC
In reply to:

Torkn Photo: In what universe is a 1" sensor even remotely close to 1 inch?

In my day, 1" was 25.4mm, and the so called 1" sensor is only around half that size. Even the diagonal is much smaller than 1".

Very good point :)

Link | Posted on Oct 17, 2012 at 11:24 UTC
Total: 10, showing: 1 – 10