Jump to content


Gary Poole

Member Since 09 Dec 2006
Offline Last Active Yesterday, 07:27 PM
-----

#257930 Step Focus Experiment

Posted by Gary Poole on 27 November 2018 - 11:07 AM

There is a add on to Helicon Focus called Helicon Remote.  It's available for Windows, MAC, Android, and IOS.  Helicon Remote will step an AF lens through the exposures to make the stack, so that you can automate the process with cameras that don't have built in focus stacking like the D850.  I've used Helicon Remote with my D300, D800e, and D810.

 

Helicon Remote attaches to the camera with a USB cord.   You can control the camera and view the images with your remote device through the USB connection.  In auto stacking mode, you manually focus the lens at the min and max focus points and the program will step the lens though the range of the stack.  You can select the interval between shots.  When the sequence is done, Helicon Remote on a PC or MAC will automatically start Helicon Focus to process the images.  You can also use Helicon Remote in a manual mode with you adjusting focus or moving the camera using a focusing rail for each step.

 

Why US coins instead of Canadian ones?




#256293 Fun with older lenses on D850

Posted by Gary Poole on 04 September 2018 - 08:40 PM

I like your dog, Gary.

 

I will bet he is the most well behaved, well trained, dog you have ever had! :lol:

 

Very nice.

The food cost and vet bills are low too.  :) 




#256287 Fun with older lenses on D850

Posted by Gary Poole on 04 September 2018 - 02:05 PM

I finally took the time to play with a couple of my MF lenses on my D810.  This is my dog.  I expect it is a bit more patient than Eric's.  That patience allowed me to shoot from a tripod using mirror up and electronic front curtain, so camera motion as well as subject motion should be nil.

  • The first of each pair of pictures was with a Nikkor-P 105mm f:2.5, SN 432xx.  This is a pre AI lens from 1971-1973 with a factory AI conversion kit.  The optical formula is 5 elements in 4 groups.  The first version of this lens was a 5/3 formula.  This appears to be the last version of the 105/2.5 prior to multi-coating.
  • The second of each pair of lenses was with a Nikkor-H 85mm f:1.8 SN 222xxx.  This is a pre AI lens from 1969-1971 that was converted to AI by Jon White of aiconversions.com .  Based on the date Eric posted this lens is one generation newer than his, but the specs are the same and I can't see any differences in the pictures of the lens.

These images were made with both lenses wide open.  I did minimal processing in Lightroom, sharpening with my normal D800e/D810 settings and used Remove Chromatic Aberration.  I adjusted the 85mm exposure slightly to match the 105mm exposure.

 

I am amazed at the smooth bokeh that I see from both lenses. 

 

 

These first 2 images are the complete frame from the 105mm and then the 85mm

GTP_20180904_006.jpg   GTP_20180904_007.jpg

 

These are 1:1 crops from the 105mm followed by the 85mm.  To me the 105 is a bit sharper, at least a maximum aperature.  Because the 105 is almost 1 stop slower, maybe the comparison isn't fair.  I should have also made f:2.5 exposures with the 85mm, but didn't think of it at the time.

GTP_20180904_006-2.jpg   GTP_20180904_007-2.jpg




#256006 Fun with older lenses on D850

Posted by Gary Poole on 24 August 2018 - 01:54 PM

 

,,,

 

One of the interesting things about the Z6 and Z7 is they will bring VR to these old manual focus lenses though in-body stabilization. 

 

...

According to Thom Hogan there is no AI coupling mechanism on the FTZ.  This means that if MF lenses work with the adapter, we will have stop down metering instead of full aperture metering.  Or even worse, no effective metering if the FTZ leaves the aperture wide open until the time of exposure.  If a MF lens does stop down for exposure we may also be focusing at the picture taking aperture instead of wide open unless we do a lot of moving the aperture ring back and forth.




#255973 Fun with older lenses on D850

Posted by Gary Poole on 23 August 2018 - 12:33 PM

 

Thanks, Jim and Gary.

 

The photo above is of our 10 year old German Shepherd rescue.  We've had him about 8.5 years.  He's very photogenic - just like all us older guys. :)

 

One of the interesting things about the Z6 and Z7 is they will bring VR to these old manual focus lenses though in-body stabilization. 

 

The lenses I received are as follows:

Nikkor 50mm f/1.4 Ai (approx 1978)
Nikkor-H Auto 28mm f/3.5 Ai'd (approx 1970)
Nikkor-H Auto 85mm f/1.8 Ai'd (approx 1967) 
Nikkor O-C Auto 35mm f/2.0 Ai'd (Approx 1974)
Nikkor Micro 55mm f/2.8 Ai-S (approx 1985)
Nikon AF Nikkor 28-80 f/3.5-5.6 D (approx 1996)
Nikon Zoom-Nikkor 43-86mm f/3.5 (approx 1978)
Nikon AF Nikkor 35-70mm f/3.3-4.5 (approx 1993)
Nikon Series E 75-150mm f/3.5 (approx 1984)

 

I don't have a pet to try my MF lenses on.  The best I can do is a wooden dog carved with a chainsaw.  (My 75 year old wife doesn't see herself as a photogenic subject.}  I think my first experiments will be with my 105/2.5 on the wooden dog.

 

For the lenses in your list I don't think I'd bother with the zooms, but using the primes should be fun.  The smoothness and the long throw of the focus rings of the MF lenses is amazing.  I even had my 35/1.4 repaired in my D300 days because the ring was very stiff due to dried up lubricant and/or grit.

 

Interesting thought about image stabilization for MF lenses in the Z7 and Z6.  Unfortunately my retirement income will not allow even thinking about them.  Maybe if I increase my occasional paid shooting sessions.




#255683 August is Water, anything that is H2O

Posted by Gary Poole on 02 August 2018 - 08:35 AM

Upper Bond Falls, near Bruce Crossing in Michigan's Upper Pennisula

 

D810, Nikon 17-35mm f/2.8, 1/2 sec, f/8, 17mm, ISO 64

GTP_20171004_133.jpg




#255682 August is Water, anything that is H2O

Posted by Gary Poole on 02 August 2018 - 08:29 AM

Another one from Smokey Mountain National Park

 

D810, Nikon 24-120mm f/4, 8 sec, f/8, 120mm, ISO 64, tripod.GTP_20150420_006-2.jpg




#255681 August is Water, anything that is H2O

Posted by Gary Poole on 02 August 2018 - 08:22 AM

Taken along a hiking trail in Smokey Mountain Park. 

 

D810, Sigma 150mm Macro, 3/5 sec, f/11, ISO 64, tripodGTP_20150421_023.jpg




#255058 A Day at the Races - PANNING

Posted by Gary Poole on 13 July 2018 - 01:31 PM

I agree with the others, Back Button Focusing is the way to go.

 

Additional suggestions:

  • Use a slower shutter speed.  It may force you to improve your technique, but the background will have longer blur streaks which will increase the notion of speed in your images.
  • Swing your body at the hips and keep your shoulders and arms still
  • Start your panning movement and tracking the subject before releasing the shutter and continue panning until after the exposure is complete. 



#253217 Nikkor 28-70/2.8 AF-S ED IF

Posted by Gary Poole on 30 April 2018 - 09:06 AM

Dennis,

 

I also have a NIkon 28-70/2.8.  Even though I've always be happy with the images made with it, from time to time I've been tempted to upgrade to a 24-70/2.8.  Your experience and wonderful photos have convinced me that there is no reason to think about such an upgrade.




#252462 Firmware updates disables Sigma AF

Posted by Gary Poole on 28 March 2018 - 05:47 PM

Did you also install the latest lens distortion firmware?

Yes I installed the latest lens distortion firmware in both cameras at the same time that I installed the latest operating firmware.  I only rolled back the operating firmware to restore AF for my Sigma lenses.  The distortion firmware is still at the latest version.




#251681 February challenge is Macro/Closeup

Posted by Gary Poole on 28 February 2018 - 03:18 PM

This a Deptford Pink (Dianthus armeria).  The blossom is about 1/2" (12 mm) across. I took this with my D800e with a Nikkor 80-200/2.8 AF-S and Canon  closeup diopter. The lens was at 200mm and the exposure was 1/50sec and f/5.6 at ISO 400. This is a 1925x2406 pixel crop (~4.5Mp) from the full image.  I was quite surprised to see such a healthy looking flower and an otherwise dead appearing plant.

 

Keweenaw_20120927_013A.JPG

 

My wife and I stopped to visit a waterfall in Michigan's Upper Peninsula.  The only view of the waterfall was from a small fenced in overlook at the top or the falls; the view was not very interesting.  The slopes were too treacherous to descend for a better view, so we left without even taking a picture of the falls.  On the way back to the parking area my wife spotted this flower and suggested I take a picture of it.  It was the only picture from that stop, but it made the stop worthwhile.




#246731 Is there any real benefit to leasing a vehicle?

Posted by Gary Poole on 27 October 2017 - 07:09 PM

If you like to drive your car into the ground, like I do ... BUY IT.
,.

My Honda CRV was bought in 1998, got rid of it 2014 due to a repair to something with the engine. $1200. Let it go.

My Honda Pilot, was bought 2003, got ride of it 2016 ... 250k km on it, again, some engine issues, could have brought it to spec for $4-$5k, bumper to bumper. .... wasn't worth it in my books. Dealership gave me $2K on trade in, no questions asked!

By my standards ... I want 10-12 years and a minimum of 150k on the odometer! We don't do lots of miles (you have to convert kilometers to miles) but I expect a decade of minimal repairs!

I'm with Art, buy it and drive the wheels off it.

 

Also my average of 18K miles (29K km) yearly would raise the lease price to close to a 5-6 yr loan payment.

 

I replaced my 1999 Volvo V70 in May 2016 with 310K Miles (500K km) on it.  I was facing a $1600 engine repair and the Blue Book value was also $1600.  I only got $500 trade in, but because of the needed engine repair morally I couldn't sell it privately. 




#244573 Latest D850 Update

Posted by Gary Poole on 24 August 2017 - 03:41 PM

...

 

Where I might save would be to buy and have it shipped in the USA where there is no tax applied to the sale.  Then, I would have to figure how to get it here without paying the tax.

 

....

I'll be happy to have your D850 shipped to me.  Shipping from B&H is free and they don't charge sales tax on items to Michigan.  I'd even test it for you. . :lol:

 

We could meet in the Detroit/Windsor area to transfer it to you




#244356 10 Stop ND filter for Eclipse?

Posted by Gary Poole on 19 August 2017 - 01:53 PM

Normal NDs can not be used for the eclipse.

  • Solar filters are about 17 stops
  • Solar filters block UV and IR, normal NDs do not

If you use normal NDs even stacked you will probably fry the insides of your camera.  Think about burning holes in leaves or frying ants with a magnifying glass.