KentG

Lives in United States Martinsburg, WV, United States
Works as a Computer guru
Joined on Aug 5, 2004

Comments

Total: 92, showing: 1 – 20
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On article Tamron files patent for 115mm F1.4 VC lens (65 comments in total)
In reply to:

ogl: Hope it will be new Pentax DFA115/1.4 DC AW

You do realize how big this lens will be. The front element will be bigger than any 70-700/2.8 lenses front element, about 82mm, based on the physics and will likely need at least an 86mm filter ring to prevent any vignetting in FF. Sounds like a studio lens to me.

Link | Posted on Aug 26, 2016 at 22:45 UTC
In reply to:

Coliban: I wondered, how Benro get away with the barefaced and obvious copy of Gitzo. I always wondered, why Gitzo didnt sued them to hell. The Benro tripods where 1:1 copies of the Gitzo tripods (and also other brands, as here, Manfrotto). It was so clear, there have been endless discussions in the forum i used to hang around. One doctor even put those Benro copies in a kernspin tomograph to examine the structure and they were pure copies of Gitzo.

I´ve never figured out, how they get away with that.

The story is Gitzo put a plant in China to make carbon fiber tripods. After several years there was a strike or some kind of dispute with officials so Gitzo closed the plant. So then the Chinese took over the plant and started making cheap copies of the Gitzo tripods using thinner CF layers (Benro or their supplier). As time went on they made better and better copies till they were as good as Gitzo. Not sure if Gitzo got anything out of this but it is a known method used by the Chinese to get the knowhow and machinery to make quality products without going thru the entire development process.

Link | Posted on Aug 18, 2016 at 20:06 UTC
In reply to:

MrTaikitso: I owned the Minolta X-700 way back! Like most of their cameras around that time (including the world's first camera with auto focus, the Dynax/Maxxum series), it was very futuristic looking and innovative for it's time. Great camera too, got me into SLR and manual photography after a period of 126 (!) and 35mm compact cameras. Knowing you were spending 40p a shot meant you were a lot more careful before pressing the shutter, although today's cameras make it easier to avoid that bad shot thanks to all the technology aboard.

Minolta was the first company to get autofocus right but not the first company to bring out an AF SLR. Leica showed an AF SLR in 1976 at Photokina and Pentax marketed the first production AF SLR the ME-F in 1981 4 years before the 7000. I switched later to Minolta, myself. Loved my pair of 700si bodies and then my Maxxum 9.

Link | Posted on Aug 16, 2016 at 23:11 UTC
On photo Road of Many Turns in the The winding road challenge (20 comments in total)
In reply to:

poppyjk: Wonderful. Can look at this one for a long time. So much to take in.

I personally think the bus adds more than it detracts from the image.

Link | Posted on Aug 4, 2016 at 17:55 UTC
On article Rare Nikon 1200mm F11 pops up on eBay (119 comments in total)

I seem to remember Canon used to make a 1200mm F8 Fluorite telephoto at one time. I used to shoot in the 90's with a Sigma 1000mm F8 APO AF lens.

Link | Posted on Jun 22, 2016 at 18:33 UTC as 44th comment
On article Video: Canon EOS 7D versus leaf-cutter ants (47 comments in total)
In reply to:

Bart7D: Weren't these ant already (in)famous for eating their way through a Leaf camera back...?

Not sure a moat would work. Doesn't work for driver (army or legionary) ants as they are known to use leaves as rafts. Pretty sure Leaf-Cutter ants can do that also as I seem to remember seeing something like that in Central America a few decades ago when shooting there.

Link | Posted on Jun 8, 2016 at 20:38 UTC
In reply to:

PeaceKeeper: Sony is SO 3 weeks ago... http://www.dailymail.co.uk/sciencetech/article-3526514/Forget-smart-glasses-Samsung-patents-contact-lenses-built-camera-projects-images-directly-eye.html

Get with the times, Sony.

The Sony is more capable than either the
Samsung or the Google.

Link | Posted on Apr 29, 2016 at 21:06 UTC
On photo C17 AT WORK in the December Flying challenge (11 comments in total)

They practice T&L right over my place most days of the week here in WV. Nice photo.

Link | Posted on Dec 25, 2015 at 21:33 UTC as 2nd comment | 1 reply
On article Nikon announces development of flagship D5 DSLR (442 comments in total)
In reply to:

marc petzold: It sounds to me like Nikon wants to say "hello, we're still here, and now developing the D4S sucessor D5 atm, please stay calm and seated!"

Jokes aside, i think Sony really hits some nerves into the Nikon Managment, and Nikon seems to be surprised about all the Sony buzz lately, especially with their A7R II.

This announcement is the so-called pre-emptive strike perfected by IBM in their mainframe days. Announce a new super model, don't give any particulars so speculation gets rife, and then fence sitters will hold back from switching until you actually get it out which could be as long as a year and with their current equipment from you they will likely not switch.

Link | Posted on Nov 18, 2015 at 21:25 UTC
On article Nikon announces development of flagship D5 DSLR (442 comments in total)
In reply to:

marc petzold: It sounds to me like Nikon wants to say "hello, we're still here, and now developing the D4S sucessor D5 atm, please stay calm and seated!"

Jokes aside, i think Sony really hits some nerves into the Nikon Managment, and Nikon seems to be surprised about all the Sony buzz lately, especially with their A7R II.

Most of the camera division profit of any company is made on the quantity sales of smaller sensor cameras. In ratios of 20:1 or more. FF cameras, especially pro ones are designed to do 2 things, give the pros what they want and get their cameras out to events where people can see the name so they will remember that when they go to buy an APS-C camera. Companies don't care what happens to those customers after they buy their camera and 2 kit lenses because hardly 1 in 10 go on to a bigger and better camera (based on studies) (read as FF or whatever you prefer). But to keep that 10% that will go farther they need a total system from top to bottom (in this case a new pro FF) even if that customer goes no farther than say a D750. They make more on lenses than cameras anyway.

Link | Posted on Nov 18, 2015 at 21:18 UTC
On photo Motorbike Mechanic in the Its Occupational-Mechanics challenge (14 comments in total)
In reply to:

papa natas: AWESOME...!!

You are correct, sir, my mistake, they were 4-strokes, but like I said the engine was a stressed frame member. The Kawasakis were 350cc two stroke singles so I assumed the Aermachis were also.

Link | Posted on Nov 10, 2015 at 23:09 UTC
On photo Motorbike Mechanic in the Its Occupational-Mechanics challenge (14 comments in total)
In reply to:

papa natas: AWESOME...!!

Technically this might not be true to the Challenge because the "mechanic" has racing leathers on so he is likely the owner and rider of the motorcycle in question and is his own mechanic. While he may be a motorcycle mechanic its more likely he is retired. Might even be somebody I ran against in the 70's but can't tell thru the facial hair.

Link | Posted on Nov 10, 2015 at 00:46 UTC
On photo Motorbike Mechanic in the Its Occupational-Mechanics challenge (14 comments in total)
In reply to:

papa natas: AWESOME...!!

No front down tube because the engine is a stressed member of the frame. Think of it as a single cylinder two stroke Ducati and you will be close. Aermachi made planes and other things during WWII and after the war got into making motorcycles for several decades.

Link | Posted on Nov 10, 2015 at 00:42 UTC
On photo Motorbike Mechanic in the Its Occupational-Mechanics challenge (14 comments in total)
In reply to:

papa natas: AWESOME...!!

Its an Aermachi 350 setup for roadracing (vintage). They had a deal with H-D so that the team roadracers like Cal Rayburn had a bike to use in the 250cc roadraces back in the late 60's to late 70's (250cc Twins and 350cc singles, two-stroke).The Kawasaki
team riders like Yvon Duhamel used to use a converted Kaw Bighorn 350cc dirt bike as their roadracing platform until the radical Kaw KR-250 rotary twin came out. One way to tell it is current vintage racer is the transponder attached to the left front fork. Those did not come out till the 90's. Note also the monster front drum brake, as those were phased out in the early 70s (when I raced). My first race bike was an ex-factory Kawasaki 500 GP bike and it had an even larger drum brake on the front than that 350, until I converted it to dual disk brakes.

Link | Posted on Nov 10, 2015 at 00:33 UTC
On photo Wasp spider in the B/W Spiders challenge (4 comments in total)

Its hardly poisonous to humans at all, not even in the top 20 world-wide. Still a nice photo.

Link | Posted on Jul 27, 2015 at 23:38 UTC as 1st comment | 1 reply
On article Nikon D810A: An astrophotographer's perspective (117 comments in total)
In reply to:

bladerunner6: These are lovely photos but they are not astrophotography. Astrophotography is about "astronomical objects" and these are really night landscapes.

And I agree with another poster, that this article is so misguided is the fault of DPReview, not the photographer featured in the article.

What would be a useful article is comparing the 810A to similarly priced (or less expensive) systems using different gear such as a telescope with some sort of tracking system or a Pentax K-3 with its built in Astrotracer.

That sort of article would be useful. And my guess is that they might well show that the Nikon system is not the best bang for the buck. This article just shows some lovely shots that are not astrophotography and have nothing to do with the feature set of this particular camera.

Having done astrophotography since I was in JHS in 1962, I agree this is not really astrophotography although he uses some of the same techniques. Mostly known as nightscapes. The same thing could have been done with the old Canon 20Da or the newer 60Da as long as you are willing to stitch exposures together or use a Sigma 8-16. I think the photos are very well shot and composed.
The word "astro" is from the Greek astron which means star. The term "nightscapes" means any combination of earth and sky shot at night were both are represented and shot at landscape perspectives. If he had shot the Milky Way without the earth in the photo then it would more clearly represent astrophotography.

Link | Posted on Jul 8, 2015 at 05:29 UTC
On article Beyond the table top: 5 mini tripods reviewed (198 comments in total)
In reply to:

Mssimo: Also a good one: TFA-01: Pocket 'Pod

Specifications
Leg Material: Aluminum
Number of Leg Sections: 1
Load Capacity: 100 lb / 45kg -------- AWESOME LOAD CAPACITY
Platform Diameter: 1.3" / 34mm
Height Fully Splayed (to top of platform): 1.7" / 44mm
Diameter Fully Splayed: 11.1" / 28.1cm
Folded Length with Stud: 6" / 14.5cm
Weight: 5.1 oz / 146g ------ Only 146 Grams

$98.00

http://www.reallyrightstuff.com/Shop/Aluminum-Tripods/TFA-01-Pocket-Pod.html

$98 does not sound so bad considering I already have a Joby Ballhead X on my Clik Elite photo backpack.

Link | Posted on Jun 30, 2015 at 20:13 UTC
On article Meta35 pulls metadata from film cameras (38 comments in total)
In reply to:

GodSpeaks: Film cameras?
Did I miss a memo, or something?

Dang! And I sold my Maxxum 9 when I went digital. I just knew I should have kept it around for another decade or two.

Link | Posted on Jun 16, 2015 at 20:12 UTC
On article Sony SLT-A77 II Review (539 comments in total)
In reply to:

Igor Adamovic: Image stabilization in this Sony is very nice thing to have. If you pair it with Tamron 70-200mm f/2.8 without VC you have very professional gear for weddings cheaply. I do not see drawback to buying this translucent mirror digital SLR, but only if you already do not have bunch of lenses with image stabilization from Nikon or Canon.

All Sony DSLRs or SLTs have IBIS because Minolta was the first company to make it work all the way back to their first DSLR the 7D. And you can use ILIS lenses on IBIS cameras as long as you turn one or the other off. Sometimes one is better than the other. Obviously if you own Canon or Nikon lenses of any type you won't be buying this camera. Unless you want to go dual system.

Link | Posted on Apr 24, 2015 at 20:57 UTC
Total: 92, showing: 1 – 20
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