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Joined on Dec 18, 2008

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Total: 221, showing: 1 – 20
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In reply to:

SomeGuyWithACamera: Why did Canon choose such huge focal lengths for macro lenses? DOF is always the limiting factor with macro and these high focal lengths are not going to help that. I'm sure it will be WONDERFULY sharp glass, and 8 stops of stabilization sounds heavenly but odd length choices to my experience.

DOF is indeed the same, as far as the sharp are a of the image is concerened. However, there's a difference regarding the blurred part: a wide-angle at 1:1 produces less relative background blur (absolute background blur being the same!). Hence wide-angles may produce more impression of depth - however not in terms of DOF.

Link | Posted on Apr 14, 2021 at 20:41 UTC
In reply to:

dave: This is a silly article, The author is a fanb0y of some brand other then Sony. Why is he on this site. Just plain dumb!

I didn't want to say Sony ML APS-C lens choice was that great, rather that the ML choice of the praised canikon competition was miserable. And that may well be from my personal point of view, where I'd mainly like to see a slightly cut-weight alternative to the 16-80/2.8-4VR or thereabouts. Of course it depends on what lenses one would like to wear ;) And this is in addition to the dumbed down canikon ML APS-C cameras (I wouldn't say if full-featured ones were available). Yes Fuji is closer but I'm not convinced...

Link | Posted on Nov 15, 2019 at 12:32 UTC
In reply to:

dave: This is a silly article, The author is a fanb0y of some brand other then Sony. Why is he on this site. Just plain dumb!

I'd agree that this is a silly article. There is little added value in the Sony UI rant, yesterday's news. The authors forgot to mention that aside for the list of specs, the lens choice is, ridiculously, another argument for Sony. The thing is that the APS-C segment of relatively compact but capable cameras is rather neglected these days. I'd like to see UI improvement here, but I'm afraid that Sony might take the author's complaints too seriously and redesign the UI in too far the opposite (novice) direction, the way we've seen with entry-level canikons. Ergonomics can be improved, but novices will probably always be intimidated by feature-rich cameras preferred by enthusiasts. I mean, I've got a Nikon DSLR and some lenses and would prefer a "smooth transition" to the Z50 to cut some weight, but I'm afraid Nikon has chosen to dumb it down a bit on purpose to push folks to FX, and the choice of suitable lens (including the current roadmap) is rather miserable compared to Sony APS-C.

Link | Posted on Nov 15, 2019 at 10:50 UTC
On article What the Z50 tells us about Nikon's APS-C strategy (677 comments in total)
In reply to:

Wahl: I am fed up with the endless "beginners" talk: I own a Z6, D750, D5600 and several lenses. All of these cameras are used professionally, i.e. to earn money. Not with landscapes or models, but on the engineering and building side of life. I am absolutely happy with the Z50: Nikon finally managed to create a APS-C-Body with all the controls I find on my Z6. I love the D5600 (with the 10-20mm attached I use it for construction site panos for technical documentation, it weights half of my D750 with Tamrons 15-30 zoom), but I hate the "amateur" layout of its controls. Even with Nikon and dpreview talking about a beginners camera, to me the Z50 finally fills the gap: a smaller version of my most used camera, with professional-level controls and perfect IQ in a very small size. Add two or three small primes plus a 10-20mm zoom, and this would be my perfect construction site set, whereas my Z6 is mostly used for people and events. Small pro, not beginner, that's what Z50 should be.

I think the Z50 actually looks very nice. But there's a bad lack of lenses, I mean suitable compact and lightweight ones (otherwise I may as well keep lugging a DSLR). I'd probably buy it if there was a compact Z-mount version of the DX 16-80mm f/2.8-4 VR with it. But there isn't one on the roadmap (Nikonrumors).

Link | Posted on Oct 21, 2019 at 09:58 UTC
On article Nikon Z50 review (2010 comments in total)
In reply to:

Robjwilli: Not sure why all the hate, looks a very nice little camera. I wish Sony would make an APSC body like this. As much as I like the A6400 output I dislike the handling.

In particular, I'd like to see something like a compact Z-mount version of the 16-80mm f/2.8-4 VR. A roadmap at Nikonrumors only shows an 18-140.

Link | Posted on Oct 21, 2019 at 09:51 UTC
On article Nikon Z50 review (2010 comments in total)
In reply to:

Robjwilli: Not sure why all the hate, looks a very nice little camera. I wish Sony would make an APSC body like this. As much as I like the A6400 output I dislike the handling.

I think basically it is a nice camera and I'm highly interested in something in this range, perhaps a little bit lighter. But the mother company seems to treat it as an underdog (just like Canon M). Funny that canikon have lens choice issues nowadays ;) In particular, this one lacks a better "base" zoom and a superzoom. For this, FF Z lenses won't be useful, so we might have to wait a long while, considering the availability of the APS-C line in the last decade.

Link | Posted on Oct 21, 2019 at 09:27 UTC
In reply to:

S Yu: Who needs a macro when you could get away with reverse mounting a kit lens :)

Reverse mounting a kit lens is too fiddly for most users. And is only good for high magnifications, while a typical macro can do portraits as well as macro with just a twist of the ring.

Another thing is that the image looks overall "sharp" despite the thin DoF due to the low relative background blur that comes at wide-angle. Wide-angle DSLR macros (e.g. Laowa 15/4) are rare because they have inconveniently short working distance, it is also tricky to light up the subject properly.

Link | Posted on Oct 21, 2019 at 08:48 UTC
In reply to:

Dazaau: These are great. Wildlife is alwats an enjoyable category. Number 4 has a lot more depth of field than I'd expect from a reversed lens.

I think DoF is not extraordinary. But the relative background blur is unusually low for DSLR macro. One does get such images with wide-angle macro lenses (e.g. Laowa 15/4 macro), but they're mostly considered not so convenient because of the short working distance.

Link | Posted on Oct 20, 2019 at 22:26 UTC
In reply to:

dan_darkroom: Pity the Clarity function didn't made it (yet) into 5.6. But then, Rawtherapee runs fine from a thumbdrive without actually installing it.

I use darktable too (better masking), but RT has nice fixed menu structure.

Anyway, great job!

What exactly is Clarity? Perhaps Edges or Microcontrast would work?

Link | Posted on Apr 24, 2019 at 08:20 UTC

I noticed a HDR (high dynamic range) option... What does it to, does it work with stills, and is it compatible with recent HDR TV / display standards (which)?

Link | Posted on Aug 23, 2018 at 12:37 UTC as 100th comment
In reply to:

makofoto: This is just a smaller cheaper version of the FRAZIER relay lens system that was used in Saving Private Ryan ... on the beach landing ... going along the rifle. We use a variety of these systems shooting commercials. Besides the Frazier, which is Panavision specific, there are the T-Rex, Revolution, various Innovision probes, Century Precision 2000, the Ultimate and the Skater Scope. These systems costs many $10,000 so our table top studio immediately ordered one of these. We spend that much on renting those systems for a week's shoot.

Though the relay construction looks more like the endoscopes made for medical purposes than like what's in inside the Frazier lens or the Koheisha device.

Link | Posted on Aug 9, 2018 at 12:55 UTC
In reply to:

Biowizard: Not one, seriously, not ONE of the close-ups in the video were anything other than yucky/fuzzy. If you want to poke a lens into a dark place (including under water), just buy one of the many cheap Chinese endoscope cameras available on the market. For about £12 (say, $15) you can get multi-megapixel shots direct onto your iOS/Android/PC/Mac device - including LED illumination - and if the IPX7 sealing fails, hey, you've only lost 15 bucks/12 quid!

OH - and the image quality is WAY better than anything I saw in this video, and that remote imaging head is at the far end of a long, flexible cable!

Brian

It is true that the IQ of such things is mostly not remarkable (no experience with this one). But the couple of cheapo endoscopes I've seen were even worse. Maybe it would be better if a small wide-angle lens were mounted on a better small sensor, perhaps the Pentax Q. A small lens diameter and the extension tube are sometimes helpful with this kind of small wildlife photography, some setups also involve prisms to change the shooting angle. http://koheisha.net/

Link | Posted on Aug 9, 2018 at 12:29 UTC
In reply to:

makofoto: This is just a smaller cheaper version of the FRAZIER relay lens system that was used in Saving Private Ryan ... on the beach landing ... going along the rifle. We use a variety of these systems shooting commercials. Besides the Frazier, which is Panavision specific, there are the T-Rex, Revolution, various Innovision probes, Century Precision 2000, the Ultimate and the Skater Scope. These systems costs many $10,000 so our table top studio immediately ordered one of these. We spend that much on renting those systems for a week's shoot.

The same principle indeed, but this thing rather competes with http://koheisha.net/

Link | Posted on Aug 9, 2018 at 12:20 UTC
On article Sony reveals faster, higher-res OLED viewfinder display (339 comments in total)
In reply to:

KLO82: Many people are saying that it is only 1600 pixels long end, and our monitors are much higher resolution now. But you are forgetting how much viewfinder magnification can be before it becomes too big to see with one eye. We view our monitors with two eyes so it can cover a much larger angle of view, so those need higher resolution. Also we use our monitors to view more than one photos and windows at the same time. But for EVF, no need for much resolution. A 0.74x EVF can be 1600 pixels on the long end without showing any resolution limitation.

> "you missed the point about one or two eyes" ... I didn't miss it, I don't agree with it. This depends on the viewfinder magnification. If the optical angle is smaller than optimal as often in small EVFs and OVFs, you are indeed losing resolution and more pixels doesn't help. Good EVFs have a decent angle with view more similar to FF DSLR than crop DSLR. But so far this only reveals pixels worse ;)

Link | Posted on May 31, 2018 at 09:34 UTC
On article Sony reveals faster, higher-res OLED viewfinder display (339 comments in total)
In reply to:

vscd: EVF? I use the unlimited resolution of my OVF ;)

> What is the range on the resolution limit of the human eye?

At normal viewing distance with 30" displays I can still notice pixelisation at FHD and QHD but not really at 4K.

Link | Posted on May 30, 2018 at 14:58 UTC
On article Sony reveals faster, higher-res OLED viewfinder display (339 comments in total)
In reply to:

ovengloves: So it refreshes faster and has a higher resolution for the same power.
Wouldn't it be better to reduce the power of what is already out there seeing as battery life is generally not so good?
Also, within reason who cares about the refresh rate, it's the delay in getting the data from the sensor to the display that's usually the thing people complain about isn't it?
This display having a higher resolution means you need more processing power to populate it and although the display may not consume more power the power consumption of the CPU driving it will increase I'd have thought and potentially increase the delay in getting data onto it.

"Refresh rate is a huge problem for EVFs. Gosh, turn down the lights and watch that promised 60fps drop to 10"

That's a problem of the sensor sensitivity, not the EVF. With smart engineering, one may avoid dropping the framerate, but use a dynamic filter instead (showing a smooth but laggy image). In very low light (high-magnification macro and such), the OVF sometimes works better.

Link | Posted on May 30, 2018 at 14:50 UTC
On article Sony reveals faster, higher-res OLED viewfinder display (339 comments in total)
In reply to:

KLO82: Many people are saying that it is only 1600 pixels long end, and our monitors are much higher resolution now. But you are forgetting how much viewfinder magnification can be before it becomes too big to see with one eye. We view our monitors with two eyes so it can cover a much larger angle of view, so those need higher resolution. Also we use our monitors to view more than one photos and windows at the same time. But for EVF, no need for much resolution. A 0.74x EVF can be 1600 pixels on the long end without showing any resolution limitation.

Well on all current EVFs I can still see pixels, which bothers me. Judging by monitors, pixels tend to disappear somewhere between FHD and 4K resolution at optimal optics. If optics are not so good, the limit may be lower. One or two eyes doesn't make a difference, assuming good eyesight.

Link | Posted on May 30, 2018 at 14:46 UTC
In reply to:

bakhtyar kurdi: Why spend $400?
https://www.ebay.ca/itm/AF-Auto-Focus-Macro-Close-Up-Reverse-Lens-Adapter-Ring-Tube-for-Canon-EOS-EF-EFS/322056783999?hash=item4afc14887f:g:I3QAAOSwkklZpipn
It is been available long time ago, most E mount users already have Canon to Sony E mount adapter.

Btw DSLR (Canon) lenses are better for reversing - because of the longer flange distance you get about 2cm more working distance when reversed.

Link | Posted on Nov 8, 2017 at 16:09 UTC
In reply to:

AlanG: Why not adapt any manual lens you want and just shoot stopped down? In good light, the EVF should stay pretty bright. There are countless enlarging lenses that one can buy cheap. You can use many lenses in the normal way for close up or reverse where appropriate if going closer than 1:1

Auto aperture comes very handy at high magnifications where light gets scarce. With the lens stopped down all the time, EVF display gets laggy and noisy - if wide-open for aiming you can see better.

Link | Posted on Nov 8, 2017 at 16:06 UTC
In reply to:

bakhtyar kurdi: Why spend $400?
https://www.ebay.ca/itm/AF-Auto-Focus-Macro-Close-Up-Reverse-Lens-Adapter-Ring-Tube-for-Canon-EOS-EF-EFS/322056783999?hash=item4afc14887f:g:I3QAAOSwkklZpipn
It is been available long time ago, most E mount users already have Canon to Sony E mount adapter.

One for Canon has been also available from Meike for a long while. Sony E mount is news. No idea why they're not available for other mounts with electronic aperture lenses though (including some recent Nikon lenses).

Novoflex was always expensive.

Link | Posted on Nov 8, 2017 at 16:00 UTC
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