bgelfand

I am not sure I would characterize Tamron's reverse engineering as "sub-standard". When the 90mm was designed, the "Z" mount had not yet been release; I believe Nikon released the first Z-mount cameras in late 2018. No prudent third party would begin a reverse engineering effort until the Z system had proved it was not another System 1 short lived system, and to allow the specification to "settle down" after it had been adopted and there was user feedback. Now that the mount has proved itself, I suspect we will see third parties making lenses for the mount. Reverse engineering takes time. Not only does the mount and firmware have to be reverse engineered, but the optical formula also has to be changed to accommodate the much shorter flange distance. This takes time, and with COVID factored in, it will take more time. As you noted the lens worked superbly on your F-mount D850 (and it is outstanding on my F-mount D750), the mount for which it was designed.

I suspect Nikon is using a variation of the "Razor and Blades" business model, although the camera can hardly be considered "low price", used successfully by Gillette and Eastman Kodak. There is probably more profit in lenses and other accessories than in the camera body itself. In any case, other than the Nikkor 28-75 f/2.8 which is made by Tamron and rebadged Nikon, no one but Nikon makes a Z-mount lens.

Taken 1 October 2011 @12:50 PM Canon PowerShot Pro 1 1/1250 sec f/4.0 in Super Macro Mode (My first digital camera with a whopping 8-megapixel sensor) Please view Full-Size. Agatha

Thanks, Mike. The bad news is, that at least in the U.S., the lens has been discontinued. Mine is being modified by Tamron (USA) as I write this. It is a nice close up lens and a good portrait lens, too.

The Tamron SP 90mm f/2.8 Di Macro VC USD F017N lens does not work on Z cameras with the FTZ adapter; it needs a firmware update. The update CANNOT be applied using the Tap-In Console. The lens must be sent to Tamron. The good news is the upgrade is covered by the 6-year warranty and is free. If you are in the warranty period, now would be a good time to get it done, even if you do not own a Z camera, yet.

If you are in the United States and need a lens AI'ed, I recommend John White at aiconversions.com. He did four of the Nikkors I used on my FTn. After conversion, they worked perfectly on my F100 and now on my D750. He does a professional job. LINK: AI Conversions for Nikon Lenses: Effective, Fast and Affordable!

In 2012 I added this card to the computer I build in 2010 to get USB 3. LINK; DP USB 3.0 4-Port PCIe i/e (siig.com) It worked like a charm with all my external disks/SSD/Thumb drives/Card readers. Because the PCIe slot cannot provide the maximum power required for the two USB 3 slots combined, there is a provision to connect a SATA power cord from the computer power supply to the card for the extra power (probably not needed for you card readers). When I connected the USB 3 connector of my Corsair K70 keyboard to this card and the USB 2 connector on the keyboard directly to the motherboard, I created a ground loop. Oops. Since the USB 2 port on the keyboard was provided to connect the mouse, I simply disconnected the USB 2 keyboard connector and connected the mouse directly. No more problem. After that everything ran trouble free for the next seven years, when I replaced the computer.

A test that would cost nothing - connect your camera to your computer and download directly from the camera. If loading from the camera is faster than the card reader, you have your answer- the problem is the card reader. If not, it is either the card or the computer. You write your computer does not have "blue USB ports" This would suggest your computer is limited to USB 2 - 480 Mb/sec. What type of computer do you have? It is relatively easy and inexpensive to add USB 3 capabilities to a Windows desktop computer.

It could be the card, or it could be the card reader. What card readers are you using for the XQD card and for the SD card? What computer are you using? Are you using the same USB port for both readers?

Check camera setting e3. Be sure it is set to TTL and NOT Manual (see page 301 in the English manual) What is the ambient lighting? Is it bright or very subdued? Could the ambient lighting be overpowering your flash?

A beautiful image. The pupils of the owl's eyes look large given the brightness of the image. Did the D850 meter enhance the exposure, was it done in post, or was the owl "on something" ;) Nonetheless, a great image with outstanding detail.

Very nice Low-Key image. You caught the catch light in the eyes perfectly. Although I am going to give most of the credit to the model. Congratulations, Gramps, you have a beautiful granddaughter.

Taken in Elk Grove, CA 17 April 2022 @ 10:10 AM Nikon D750 1/400 sec, f/13, ISO 250 (Auto) Tamron SP 90mm f/2.8 Di Macro VC USD F017N Range: 0.71 meters Please view Full-Size

Check Point Charlie Berlin January 1970

Two more images of the Kaiser Wilhelm Church, taken in January 1970 Zeiss Contaflex IV camera; film and exposure unknown. Intentionally printed with higher contrast,

Taken in Elk Grove, CA 17 April 2022 @ 10:09 AM Nikon D750 1/400 sec, f/13, ISO 200 (Auto) Tamron SP 90mm f/2.8 Di Macro VC USD F017N Range: 0.71 meters Please view Full-Size

Taken in Elk Grove, CA on 17 April 2022 @ 10:12 AM Nikon D750 1/400 sec, f/13, ISO 400 (Auto) Tamron SP 90mm f/2.8 Di Macro VC USD F017N Range:0.63 meters Please view Full-Size

The Boys (discovering there is a backyard in their new home and the door is opened) Taken in Elk Grove, CA on 17 April 2022 @ 6:03 PM Nikon D750 1/400 sec, f/8, ISO 1100 (Auto), Tamron SP 70-200mm f/2.8 Di VC USD A009N @ 135mm, Range: 2.99 meters Please view Full Size

Before you become enamored with those old prices, dig up some old Want Ads (you remember those from pre-Internet times ;) ) and look up what your job would have paid you. Now compute how many hours you would have needed to work than at the 1982 rate of pay to how many hours you need to work now at your current rate of pay and current price. Of course, to get the true cost in hours worked of any discretionary item, you would first have to allow for taxes and the cost of nondiscretionary items like food and shelter in both time periods.

Yours was one of the replies to my post on photo.net back in 2018 that made me decide to purchase the Tamron 24-70. I have never regretted that decision; it's a great lens. Once again, thank you for the good advice.

I cannot compare the D7000 to the D750. I went directly from shooting film on a F100 to the D750 and purchased a Tamron 70-200 f/2.8 at the same time to use on both the D750 and my F100. I used my F100 lenses all Nikon - AI'ed 24mm f/28, and 105 f/2.5 and 50 f/1.4D and 35-70 f/2.8D with the D750. At first, I was very satisfied with this kit. After about a year, I could see the old Nikon lenses left something to be desired; not all that much, but still something. After doing some research and posting questions here on photo.net, I purchased a Tamron 24-70 f/2.8 G2 and a Tamron 90mm f/2.8 G2 macro to take the places of the 35-70mm f/2.8D, the 105mm f/2.5 and the 50mm f/1.4D. I kept the Nikon lenses and still use them occasionally - I find the 50mm excellent when I want a lighter walk around lens. From my perspective modern lenses, even third-party modern lenses, are better than the old Nikon lenses. Would a Nikon 24-70 have been better than the Tamron I purchase? Yes, very slightly perhaps; I had a hard time differentiating. But IMHO the Tamron lenses won based on cost/performance.

A factor to be considered is camera/lens physical size. Street photographers try to be inconspicuous so the images will be candid and not influenced by the presence of the photographer. That is one of the reasons Henri Cartier-Bresson used a Leica with a 50mm lens. Another reason, of course, is that it was an outstanding camera/lens for its time.

You are correct, ASML never made any cameras or camera lenses. Nor does it make the lenses for their EUV photolithography systems. Those lenses, and many of the other lenses used by ASML, are made by Zeiss - Zeiss SMT. ASML is a minority owner of Zeiss SMT with 24.9% of the stock. Carl Zeiss AG owns the rest of the company. I suspect there are many parts of ASML's machines that are made by sub-contractors. It is the same with most large complex machines. Look at aircraft. Neither Boeing nor Airbus makes the engines, nor a large part of the electronics. They do not make the wires, or interiors. They do integrate these, and many other items, to make a finished aircraft. The other large manufacturer of photolithography lenses is Nikon, although they make DUV lenses not EUV, yet. Both Nikon and Zeiss own much of their expertise in lens making their photographic divisions. Of course both companies started making other optical equipment and them began to make photographic equipment. It's a never-ending circle. As you correctly point out, the people who specify the components that go into the finished product are concerned with Zeiss and Nikons ability to make the parts they need at the price point they need and their reputation in those areas and not another division. I suspect both Nikon divisions will continue.

Taken in Elk Grove, CA 17 April 2022 @ 10:11 AM Nikon D750 1/400 sec, f/13, ISO 400 (Auto) Tamron SP 90mm f/2.8 Di Macro VC USD F017N Range: 0.71 meters Please view full size

Taken in Elk Grove, CA 17 April 2022 @ 10:03 AM Nikon D750 1/400 sec, f/16, ISO 560 (Auto) Tamron SP 90mm f/2.8 Di Macro VC USD F017N Range: 0.63 meters Please view Full Size