Search found 47 matches

by chuong nguyen
Mon Aug 12, 2019 1:19 pm
Forum: Equipment Discussions
Topic: Minolta Dimage Scan Elite 5400 mounting comparison CanonMPE
Replies: 18
Views: 6408

Smokedaddy wrote:... just curious, wouldn't a 1951 USAF resolution test chart be best to test the resolution of each lens?
I just tested the lens at 1X with Olympus OMD M5 inhi res mode. The lens can clearly resolve El 7, Gr 3 or 161 lp/mm or 3.1 microns. I think that is the limit of this sensor.

Chuong Nguyen
by chuong nguyen
Tue Apr 30, 2019 8:31 am
Forum: Equipment Discussions
Topic: Scanner Nik 8000ED with Nikon K tubes tested
Replies: 7
Views: 2433

Hi Lou: As I showed in http://www.photomacrography.net/forum/viewtopic.php?t=38761&highlight=telecentric My configuration was: "The diaphragm is about 40 mm from the back of the metal barrel of the lens. The diameter of the diaphragm is approximately 9 mm" I have made some measurements comparing th...
by chuong nguyen
Mon Apr 29, 2019 8:11 am
Forum: Equipment Discussions
Topic: Scanner Nik 8000ED with Nikon K tubes tested
Replies: 7
Views: 2433

Agree with John, would like to see your setup. Mike and John, Here is another picture of the lens and extension tubes when they fit together: http://www.photomacrography.net/forum/userpix/1872_P4280056_2.jpg Here are some pictures of my setup for the flower shots. I live near Silicon valley so my eq...
by chuong nguyen
Sun Apr 28, 2019 10:14 pm
Forum: Equipment Discussions
Topic: Scanner Nik 8000ED with Nikon K tubes tested
Replies: 7
Views: 2433

Scanner Nik 8000ED with Nikon K tubes tested

Follow up on: http://www.photomacrography.net/forum/viewtopic.php?t=38761&highlight=telecentric I would like to share my setup for this lens in telecentric mode using Nikon K extension tubes. http://www.photomacrography.net/forum/userpix/1872_P4280057_1.jpg The SN fits snuggly inside the K tubes. To...
by chuong nguyen
Thu Mar 28, 2019 12:07 pm
Forum: Equipment Discussions
Topic: Zeiss S Distagon relay lens
Replies: 1
Views: 2378

Zeiss S Distagon relay lens

Interesting special purpose lens. Your comment please.

https://www.ebay.com/itm/ultra-rare-CAR ... SwLDlcWLIk

Chuong Nguyen
by chuong nguyen
Thu Mar 07, 2019 10:22 am
Forum: Equipment Discussions
Topic: Water drop equipment
Replies: 12
Views: 2844

Please take a look at this: https://plutotrigger.com/products/droplet-valve . Reasonable price.
by chuong nguyen
Wed Aug 22, 2018 9:27 am
Forum: Equipment Discussions
Topic: Inspec.X 105 f4 3.5X stack&stitch on Horseman LX camera
Replies: 4
Views: 866

mjkzz wrote:wow, nice! I was trying to find the 3.5x f/4 version of the lens. Seen a lot of f/5.6 3x one, but I think effective aperture probably kill the sharpness.

one suggestion, not sure if you know this, you can try www.easyzoom.com
Thanks for the hint. Will try next time.
by chuong nguyen
Wed Aug 22, 2018 9:25 am
Forum: Equipment Discussions
Topic: Inspec.X 105 f4 3.5X stack&stitch on Horseman LX camera
Replies: 4
Views: 866

Excellent, congratulations! That's encouraging. So you had no stitching problems, right? Did you need to start each stack in the same plane? Or is the Inspec.x lens telecentric? I suppose the latter, as a machine vision lens. Lou, It worked on the first try, I just specify near-far points for stack...
by chuong nguyen
Wed Aug 22, 2018 12:02 am
Forum: Equipment Discussions
Topic: Inspec.X 105 f4 3.5X stack&stitch on Horseman LX camera
Replies: 4
Views: 866

Inspec.X 105 f4 3.5X stack&stitch on Horseman LX camera

This is my first try using rear rise/shift for a 2X3 stitch image. Technical details: Lens Inspec.X 105 f4 3.5X Sony A7R FF camera Cokin creative flash with reflectors and Gordox dome diffuser Sensor-lens 375 mm , WD 100 mm Rear shift/rise on Horseman LX 4X5 camera Image size 84mm X 48mm or 17659 x ...
by chuong nguyen
Tue Aug 21, 2018 9:39 am
Forum: Equipment Discussions
Topic: The lenses we use
Replies: 324
Views: 24534

Mike, there are cheap Fotodiox shift adapters from Nikon mounts to MFT mounts. No need for tilts. Also, the good Nikon bellows have shifts in one direction (and tilts). For scanning a large aerial image it needs to be used backwards (shifting camera rather than lens), as I discussed in the thread. ...
by chuong nguyen
Tue Aug 21, 2018 8:23 am
Forum: Equipment Discussions
Topic: Cokin Creative Flash
Replies: 1
Views: 653

Cokin Creative Flash

I have been using this flash and found it very useful in macro photography. It has three adjustable heads.

They are on sale now: https://www.ebay.com/itm/PRICE-CUT-Coki ... SwaM1bb0OY

Chuong
by chuong nguyen
Tue Aug 14, 2018 1:13 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: One-winged hoverfly
Replies: 5
Views: 1066

Nice. I like the background. Great lens.
by chuong nguyen
Tue Apr 24, 2018 12:56 am
Forum: Equipment Discussions
Topic: 2X Test Minolta Scan 5400 vs Canon 35mm f2.8 Macrophoto Lens
Replies: 6
Views: 1843

Thanks for taking the time to post these valuable info. I have both lenses but never had time to do what you did. Again, thanks.
by chuong nguyen
Sat Jan 20, 2018 5:27 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Ornate katydid
Replies: 12
Views: 1833

Very nice macros. Thanks for sharing.
by chuong nguyen
Wed Jul 19, 2017 11:11 am
Forum: Equipment Discussions
Topic: Coastal Optical lenses vs Scanner 8000ED lens at 1X
Replies: 12
Views: 1782

The CO lens pair must have cost many thousands of dollars, while the Scanner Nikon ED costs as little as $200. And the image circle of the Nikon is 60 mm in diameter! I am very impressed by my Scanner Nikon. However my copy of the Printing Nikkor 105 A version is even better. (My copy, which I got ...