Martinka

Lives in Czech Republic Prague, Czech Republic
Has a website at www.artofsport.cz
Joined on Oct 21, 2009

Comments

Total: 245, showing: 1 – 20
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Can someone explain why? Why such a small sensor? Why the need of specific camera for specific planet? Why such a high fps? Thanks.

Link | Posted on Apr 9, 2021 at 04:54 UTC as 11th comment | 9 replies
In reply to:

PAntunes: It's amazing to see how much lenses have evolved.

This was a great lens back in the day, and the prices today still reflect that. But when you actually get to use it, it's slow to focus, doesn't focus on the eye (that should be a camera problem, not the lens), cat's-eye bokeh, awful aperture blades at 2.8, low contrast, heavy, etc.

For the $2500 people are still asking for it, you better be sure that's the right lens you need.

PS: thanks for bringing a photographer to test the lens. You should do more reviews like this.

What? Focus is little slower, but still very reliable, with R5 eye-focus is not a problem, bokeh and colors are fantastic... for me this is the best lens ever

Link | Posted on Jan 27, 2021 at 07:40 UTC
In reply to:

nitroman: Third party versions have been around for years and are much more realistic ! I'd have thought Canon could have done better for these prices!

Probably you don’t remember, but Canon invented “lens mugs” back then. Third party versions followed after that. This ceramic ones are just another idea

Link | Posted on Dec 15, 2020 at 05:54 UTC
On article Laowa 9mm F5.6 FF RL sample gallery and impressions (103 comments in total)
In reply to:

Mr Bolton: What's interesting is no Canon EF or Nikon F. Maybe they couldn't optically do it on F mount (I really don't know, feel free to educate me otherwise) but there are a lot of FF Canon cameras out there.

Maybe the design requires the closer flange back distance of mirrorless?

Ziginox: sounds logical

Link | Posted on Nov 9, 2020 at 10:45 UTC
On article Laowa 9mm F5.6 FF RL sample gallery and impressions (103 comments in total)
In reply to:

Mr Bolton: What's interesting is no Canon EF or Nikon F. Maybe they couldn't optically do it on F mount (I really don't know, feel free to educate me otherwise) but there are a lot of FF Canon cameras out there.

Maybe the design requires the closer flange back distance of mirrorless?

That is definetely not interesting, but obvious. Interesting is the lack of RF mount

Link | Posted on Nov 8, 2020 at 06:51 UTC

Is it still fisheye?

Link | Posted on Sep 17, 2020 at 09:35 UTC as 38th comment | 1 reply
In reply to:

Plotinus Disciple: $1000 dollar Fuji xt3 and a gimbal produces 4K 60 need I say more. Plus no overheating at all.

APS-C, LOL

Link | Posted on Aug 2, 2020 at 20:01 UTC
In reply to:

Niko Vita: 3 minutes of video seems fascinating.

After 20 continuous minutes of previous recording. In 8K.

Link | Posted on Jul 15, 2020 at 09:47 UTC
In reply to:

Halftrack: I'd be hesitant about modifying a lens like this, but on the other hand I'm surprised that more lenses don't already come with a provision to add a filter other than by screwing it onto the end. UWAs especially should always have a place for a drop-in filter, since their front elements frequently bulge out from the end of the lens.

There already are plenty of UWA lenses with slot in the rear for gel filters.

Link | Posted on May 16, 2020 at 19:29 UTC
In reply to:

JackM: Surprised they still use that clumsy landing gear. They should use a 3 point system so the drone could stably land on uneven solid surfaces.

Seems like the landing gear is solid...

Link | Posted on May 9, 2020 at 17:01 UTC
In reply to:

MinAZ: Closing the shutter - I had actually suggested this featured before and I am so glad that Sony finally implemented it in their top-end cameara. However, this is one feature I would want for my A7RIV and A7III, not to mention all future Sony mirrorless cameras.

Well, in DSLRs shutter is much much deeper in the mirror box than in mirrorless cameras...

Link | Posted on Apr 10, 2020 at 18:08 UTC
In reply to:

robert614: “Adds a function to close the shutter when you turn off the camera to prevent dust or debris from adhering to the image sensor when you change lenses”

Cool! I haven’t really checked this forum much lately with all that’s going on in the world. But this is a welcome surprise!

While I have been generally happy I upgraded from the A9 to the A9II (mostly for ergonomic reasons). This definitely makes the cost of upgrading a little easier to swallow.

Downloading now...

Canon did it first.
Despite the good idea, there is another drawback - you have to turn the camera off. And I have never turned camera off in order to change lens...

Link | Posted on Apr 10, 2020 at 18:06 UTC
On article Canon EOS-1D X Mark III review (1351 comments in total)
In reply to:

armandino: The A9II was pretty heavily criticized for not being much of an upgrade from the original A9. The general comment was that upgrading to the A9II made sense really only for photographers geared for the Olympics.
Now my question is, for a sport photographer that is not going to participate to high profile events such has again the Olympics and has a good 1DXII would be really into upgrading to the 1DXIII? I do not see much value in that honestly. Sure, as expected the 1DXIII has been improved in every regard, but for a pragmatic sport shooter the benefits seem pretty marginal to me. Anyone with actual real experience care to comment? I am genuinely curious.

But A9II was really not much of an upgrade. On the other hand, Canon upgraded everything - better image sensor, more FPS, much improved AF, better LCD screen, better AF, better battery life, controls, better durability, awesome video capabilities etc. The only dissapointment for someone might be the same megapixel count.

You can say 1D X II was on the level "good enough for pretty much everyone" and from that point of view 1DX III might not make much sense, but Canon this time did everything right and 1D X III is step forward in every directions.

Link | Posted on Jan 7, 2020 at 09:41 UTC
In reply to:

Kevin DiOssi: I really like the idea of this product. Unfortunately, the the fact I need to remove the bulb each time I put my lights away because the cap won't fit makes this a no-go for me. Bulbs are over $100 for these....so I'll just put up with a slightly obscured bulb element.

Even cheap chinese printers can print 220x220x250 mm, you could print cover for whole flash

Link | Posted on Jun 29, 2019 at 15:10 UTC
In reply to:

Kevin DiOssi: I really like the idea of this product. Unfortunately, the the fact I need to remove the bulb each time I put my lights away because the cap won't fit makes this a no-go for me. Bulbs are over $100 for these....so I'll just put up with a slightly obscured bulb element.

You could 3D print one...

Link | Posted on Jun 29, 2019 at 11:09 UTC
In reply to:

Duncan M: You love them you hate them - I like these pen tablets.

There is only one thing to dislike and that is the fact that the driversoftware is far outdated and contains many bugs.

Agreed, drivers are the biggest weakness od Wacom for many many years. Plus I could live without the side buttons.

Link | Posted on May 11, 2019 at 17:38 UTC
On article GimbalGun aims to spread the load for videographers (71 comments in total)

Especially the second configuration with the thing on the shoulder looks sooo front-heavy

Link | Posted on Mar 10, 2019 at 07:11 UTC as 5th comment | 1 reply
In reply to:

Binone: I'm a m4/3 user and have no interest in the M1X-too big. The main argument for m4/3 is how easy it is to have the right camera/lens combination at the ready at all times.

On a recent photo-oriented trip to the Galapagos, I was only 1 of 2 photographers using m4/3 (the other a Nat Geo pro). On hikes, which were about the wildlife, I carried 3 bodies with different lenses-all conveniently hanging off my shoulders. I had the equivalent of 14mm to 600mm by just reaching for the right camera & lens already mounted. I NEVER had to change glass while hiking & carried no backpack. One FF user had a backpack that weighed 45lbs. I can't do that. One FF user dropped a lens while changing-it broke. I was able to hike for several hours without ever encountering a situation where I did not have the right lens at the ready and it weighed very little. At 1 moment there was a lizard right in front of me, then a bird would take flight - the right lens was always mounted. That's what m4/3 is about.

Nikon 300/4 is smaller and lighter than Olympus 300.

Link | Posted on Feb 25, 2019 at 06:41 UTC
In reply to:

Binone: I'm a m4/3 user and have no interest in the M1X-too big. The main argument for m4/3 is how easy it is to have the right camera/lens combination at the ready at all times.

On a recent photo-oriented trip to the Galapagos, I was only 1 of 2 photographers using m4/3 (the other a Nat Geo pro). On hikes, which were about the wildlife, I carried 3 bodies with different lenses-all conveniently hanging off my shoulders. I had the equivalent of 14mm to 600mm by just reaching for the right camera & lens already mounted. I NEVER had to change glass while hiking & carried no backpack. One FF user had a backpack that weighed 45lbs. I can't do that. One FF user dropped a lens while changing-it broke. I was able to hike for several hours without ever encountering a situation where I did not have the right lens at the ready and it weighed very little. At 1 moment there was a lizard right in front of me, then a bird would take flight - the right lens was always mounted. That's what m4/3 is about.

So do high-megapixel fullframes like 5DR or D810 and crop

Link | Posted on Feb 24, 2019 at 18:57 UTC
On article Olympus E-M1X shooting experience (326 comments in total)
In reply to:

J A C S: The "motorsports" shot: how hard is to AF at f/16 and 14mm (28/32 eq.)? The DOF at, say 10m, is from 0.76m to infinity and one can shoot with manual focus?

Big DoF in the very first picture also helps autofocus to do the job. Not mentioning the side shot of Nascar isn't AF challenging at all.

You need to go to samples gallery to see better examples of AF capabilities

Link | Posted on Jan 24, 2019 at 07:20 UTC
Total: 245, showing: 1 – 20
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