Mike Griffin

Mike Griffin

Lives in Australia Australia
Joined on Apr 12, 2004

Comments

Total: 130, showing: 1 – 20
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In reply to:

Digitalis32: With these filters being made of such hard material that is cut so thin, it doesn't take much to imagine what would happen if one of these shattered - which can happen if they are struck hard, from the right angle. Sapphire would tear up the front element of any lens like it was made of wet tissue paper and the thin glass will cut your fingers to shreds should you carelessly attempt to remove it.

Also, 30 layers of optical coatings, that would be 15 layers per side which raises a question... Fuji EBC coatings which are the undisputed best in the industry have only 13 layers, and 99.8% overall transmittance (I can post citations on this). Since when did Korea optics manufacturers have this kind of technology?

Good points about the dangers of shattered sapphire.

Direct link | Posted on Mar 21, 2015 at 04:13 UTC
In reply to:

Mescalamba: Thats interesting actually.

Otherwise, sapphire in this case is just synthetic corundum. Rather easy to make in large quantities. Not much to do with that sparkling blue gems. :) Im not sure if it even has same oxides as natural one. But sure, sapphire glass sounds much better than corundum glass. :D

Technically, sapphire isn't glass. One has an ordered atomic structure so is a crystal, glass has a disordered atomic structure so is glass.

Direct link | Posted on Mar 21, 2015 at 04:10 UTC
In reply to:

Daryl Cheshire: carborundum conumdrum

corundum, without the arbs. One's silicon carbide, the other aluminium oxide.

Direct link | Posted on Mar 21, 2015 at 04:07 UTC

I've read that the 5DS and 5DS R have a more saturated RGB filter to achieve more accurate colour rendition. You would think that would be a major camera feature but no one is talking about it. Nor are they pointing out that a stronger RGB filter will result in a lowering of the upper ISO limit when the low ISO limit is questioned.

Direct link | Posted on Feb 7, 2015 at 23:13 UTC as 8th comment | 1 reply
In reply to:

BarnET: DPreview,
Thanks for posting this article on this Issue.
Guys let's just keep this civil. Acknowledgement is a good thing.
Nikon has been less consumer freindly with problems in the past.

I think it's the pot CALLING the kettle black. Anyway that gets you nowhere as most cameras are black to start with.

Direct link | Posted on Jan 6, 2015 at 09:08 UTC
On Nikon D750 Review preview (1914 comments in total)
In reply to:

Allen Yang: I like the addition of the dedicated AF review pages. But, where is the "compare" mode on the conclusion page? Is there something wrong with my browser?

"Compare" isn't there in Chrome but it's there in IE

Direct link | Posted on Dec 21, 2014 at 03:48 UTC
On 'See Impossible': Canon counts down to... something. article (1656 comments in total)

Canon may have a chance. The Epson 6" x 4" battery powered printer which I had was useless. It ended up getting chucked out.

Direct link | Posted on Oct 8, 2014 at 00:26 UTC as 199th comment
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

pboehi: Why do those cameras force me to use the dreadful 3:2 image ratio and don't give me more options - like 5:4? I have to wait for the next pro model...

You do have more options, it's called cropping. What your asking is for the camera to crop for you.

Direct link | Posted on Sep 14, 2014 at 23:55 UTC
On Sony unveils FE PZ 28-135mm F4 G OSS cinema lens article (119 comments in total)
In reply to:

Dazzer8888: Damn, that's a nice lens for the A7

Can't believe how some readers don't get that it's a specialty lens for video.

Direct link | Posted on Sep 14, 2014 at 09:00 UTC
On Sony unveils FE PZ 28-135mm F4 G OSS cinema lens article (119 comments in total)
In reply to:

wsalopek: ASTRONOMICAL PRICE.

For those who want some kind of decent line of FE lenses (good/great performance AND at least semi-affordable) as they consider buying into the Sony FE ecosystem...announcements like this are rather disheartening....$2500?

Honestly, to say something like this "expands the FE lineup", is like saying "Gulfstream has introduced a new business jet, so YAY, Joe Traveler has more choices of aircraft to fly".

Of course I exaggerate some but...

Look...this is probably a good lens. But for Canon and Nikon customers who are considering an A7/variant (or indeed ANYONE considering an A7/variant), the limited number of FE lenses (A-mount + LA-EA4 is far from ideal), compounded by the utter astronomical prices of said Sony lenses, is, well, like I said, sickening.

Yes, it is really cheap for what it is. I reckon Sony would do very well if they made it available in Nikon/Canon mounts. Likely not possible though without redesign due to lens mount to sensor differences.

Direct link | Posted on Sep 14, 2014 at 08:52 UTC
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

PHOTOJOE55: Not many comments about the AA Filter...

Henry, your first guess is right.

Direct link | Posted on Sep 14, 2014 at 08:19 UTC
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

rfsIII: You know why Nikon cameras are so screwed up? Because of you people and your negative comments. The engineers at Nikon are people with feelings just like you and when they read these words—even in translation—it must be devastating to their professional pride and their egos.
So instead of innovating boldly and giving us amazing cameras, they design out of hurt feelings and confusion and fear of further criticism. Hence, we get timid cameras that are confusing. Creative people thrive on positive feedback. You need to praise the good behavior, ignore the bad.
So, if you don't like what Nikon is doing, you have only yourselves to blame.

I believe the fold-out screen is helium filled Scottelly.

Direct link | Posted on Sep 14, 2014 at 07:28 UTC
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

rfsIII: You know why Nikon cameras are so screwed up? Because of you people and your negative comments. The engineers at Nikon are people with feelings just like you and when they read these words—even in translation—it must be devastating to their professional pride and their egos.
So instead of innovating boldly and giving us amazing cameras, they design out of hurt feelings and confusion and fear of further criticism. Hence, we get timid cameras that are confusing. Creative people thrive on positive feedback. You need to praise the good behavior, ignore the bad.
So, if you don't like what Nikon is doing, you have only yourselves to blame.

You're right. Canon engineers don't have that problem, their customers accept whatever they come up with. Just like Apple engineers actually.

Direct link | Posted on Sep 14, 2014 at 07:26 UTC
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

Wubslin: Articulating rear display. Now I know Nikon has totally lost it.

Goodbye structural integrity, here comes the latest me-too fashion craze.

I feel like a spare man at a wedding. Scottelly is writing all my replies for me.

Direct link | Posted on Sep 14, 2014 at 07:20 UTC
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

GPW: Nikon, Nicon, Nican, Nicano, Ncano, Ncanon, Canon!!!

Call me a drongo but I actually think it is a pretty desirable camera. I haven't been tempted to upgrade from DX until now. The fact that the max shutter speed is "only" 1/4000 sec and the flash sync isn't 1/1000 sec are non issues. In DSLR heaven the only other thing I could wish for is built in GPS.

Direct link | Posted on Sep 14, 2014 at 07:03 UTC
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

djbrom: Whilst I am not a Nikon shooter, I still have interest in cameras and their features in general (just interest and curiosity) and having a quick look through the specs of this camera one thing stood out like a sore thumb. A 1/4000th shutter limit?? What on earth is Nikon thinking? This is not a 3300 or 5300 but a full frame high end model. Having had cameras with a 1/4000th shutter limit I can safely say that it really is a shortfall when using fast lenses in brighter daylight. Will Auto ISO also be able to go to ISO 50 or is it limited to ISO 100 where you have to go into the menu to enable the extended iso 50?
The biggest saving grace of this will be that you should have quite a bit of headroom to allow high ETTR and correcting in PP.

I take it that the D750 is not for you. You could always go down to 50 ISO if needed. Can't imagine photographing the world with my lenses stuck on f1.4

Direct link | Posted on Sep 14, 2014 at 06:43 UTC
On Sigma announces two 150-600mm F/5-6.3 DG OS HSM zooms article (138 comments in total)
In reply to:

Chuck Lantz: All this negative stuff about huge zooms being "too heavy"? I'm beginning to think I've stumbled upon the seven dwarves' cottage in the woods.

We're talking about 500 and 600mm zooms, folks! They are SUPPOSED to be heavy, so that we can all look extra cool to the spectators watching us lug all that junk around as we show-off our credentials, walking and blocking their views in locations they can only dream of entering.

I never carry fewer than two, and sometimes three, of those monsters at what I laughingly call "work", and I just hit the big seven-oh (brag-brag-brag), so let's stop the moaning about heavy gear and start hitting the gym a few times a week, dudes and dudettes. This is PHOTOGRAPHY, people! No one said it's supposed to be easy! ;)

Nicely said, from another seven-oh

Direct link | Posted on Sep 14, 2014 at 02:19 UTC
On Nikon announces AF-S Nikkor 20mm f/1.8G ED article (67 comments in total)
In reply to:

tom43: $799 for a Nikon lens doesn´t sound like high-end landscape lens matching the D810 resolution...let´s wait and see the first reviews.

Nano crystal coat has so far applied only to high end lenses. Lets hope that's the case here.

Direct link | Posted on Sep 13, 2014 at 07:46 UTC
On Nikon announces AF-S Nikkor 20mm f/1.8G ED article (67 comments in total)
In reply to:

MPA1: Why is the press release for the D750 on a page about a lens?

Nikon is hoping if you buy the lens you'll also buy a D750 to go with it.

Direct link | Posted on Sep 13, 2014 at 07:45 UTC
On Nikon D750 First-impressions review preview (1418 comments in total)
In reply to:

djbrom: Whilst I am not a Nikon shooter, I still have interest in cameras and their features in general (just interest and curiosity) and having a quick look through the specs of this camera one thing stood out like a sore thumb. A 1/4000th shutter limit?? What on earth is Nikon thinking? This is not a 3300 or 5300 but a full frame high end model. Having had cameras with a 1/4000th shutter limit I can safely say that it really is a shortfall when using fast lenses in brighter daylight. Will Auto ISO also be able to go to ISO 50 or is it limited to ISO 100 where you have to go into the menu to enable the extended iso 50?
The biggest saving grace of this will be that you should have quite a bit of headroom to allow high ETTR and correcting in PP.

Today is a bright sunny day. With the sun behind me directly illuminating a Kodak Grey Card at an angle of 90 degrees to the card and my camera set on ISO 100 and a shutter speed of 1/4000th second the aperture required to get the correct exposure is f2. In my book 1/4000th sec is sufficient. There's little I can think of that I would want to shoot at f2 in bright sunlight.

Direct link | Posted on Sep 13, 2014 at 07:31 UTC
Total: 130, showing: 1 – 20
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