Search found 233 matches

by Peter De Smidt
Fri Oct 24, 2014 2:46 pm
Forum: Equipment Discussions
Topic: EL-Nikkor 50mm f.2.8 N: Bargain ... no not really (Fungus)
Replies: 10
Views: 2163

I had an Ebay seller argue with me after sending him pictures of the lens very similar to those in this thread. I can see how a lens might slip through, but with such clear evidence of fungus, a cheerful refund is the proper response.
by Peter De Smidt
Fri Aug 22, 2014 4:23 pm
Forum: Equipment Discussions
Topic: Manual or Electronic Slider for Vertical Use w/ Heavy DSLR?
Replies: 10
Views: 2069

Here's a video of an early version of my scanner in action: https://www.youtube.com/watch?v=gmRHTausFls Currently, I use a D600 and a Rodagon D 75mm F4 lens at 1:1. For vertical positioning of the camera, I use a Velmex 4000 series slide along with an Arca style clamp. You can see Daniel Moore's rig...
by Peter De Smidt
Mon Aug 18, 2014 7:21 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lenses for Close-Up and Macro Photography
Replies: 5
Views: 1799

Good work.

I noticed that there's some brochure's available on Ebay that might interest people who read this thread: http://www.ebay.com/itm/Rare-Nikkor-Bro ... 5d4ee59e19
by Peter De Smidt
Wed Jun 11, 2014 11:31 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Cheap diffuse LED light source?
Replies: 16
Views: 5552

I used RGB LED strips from Lee Valley http://www.leevalley.com/US/hardware/Page.aspx?p=70326&cat=3,43629,70322 to make a light source for a scanner. http://www.photomacrography.net/forum/userpix/2198_DSC_2206_1.jpg It is very bright, and you can control the red, blue and green channels separately. I...
by Peter De Smidt
Mon Jun 09, 2014 8:14 pm
Forum: Equipment Discussions
Topic: Tube lens tests on D800E full frame
Replies: 42
Views: 35353

Great test! Thank you for doing it.
by Peter De Smidt
Mon Jun 02, 2014 12:48 pm
Forum: Equipment Discussions
Topic: Close-up lenses as tube lenses: Raynox.....
Replies: 4
Views: 1260

Good! That saves me from wasting some time. Thanks!
by Peter De Smidt
Mon Jun 02, 2014 10:13 am
Forum: Equipment Discussions
Topic: Close-up lenses as tube lenses: Raynox.....
Replies: 4
Views: 1260

Thanks, Rik. I'll see what I can scrounge up. Currently, I use a Nikon AIS 200F4 as a tube lens on my D600. I haven't played around with extending the microscope objective farther in front of tube lens. Currently, it's very close, as it's mounted on a flat 52mm-Mitutoyo adapter plate.
by Peter De Smidt
Sun Jun 01, 2014 8:15 pm
Forum: Equipment Discussions
Topic: Close-up lenses as tube lenses: Raynox.....
Replies: 4
Views: 1260

Close-up lenses as tube lenses: Raynox.....

Rick recently posted a comparison of a Raynox DCR-150 versus dedicated tube lenses. The reversed Raynox did a better job, especially in the corners. I wouldn't mind giving something similar a try, although I'd prefer something with 52mm filters. Are the multi-element Canon or Hoya 5 diopter close-up...
by Peter De Smidt
Sun Mar 30, 2014 3:01 pm
Forum: Equipment Discussions
Topic: Mitutoyo M Plan 7.5x: finally!
Replies: 11
Views: 3136

I look forward to seeing the results!
by Peter De Smidt
Wed Mar 19, 2014 6:56 pm
Forum: Equipment Discussions
Topic: Elinchrom strobes vs Canon speedlights
Replies: 13
Views: 2806

I mainly use the Cheetah speed lights for commercial photography, mainly environmental portraits. Digital cameras need a lot less light than was needed in the film days. I've got Speedotron black line power pack/heads, and Photogenic monolights, but they are very bulky, and they have way more power ...
by Peter De Smidt
Wed Mar 19, 2014 4:39 pm
Forum: Equipment Discussions
Topic: Elinchrom strobes vs Canon speedlights
Replies: 13
Views: 2806

The monolights will have a lot more power, and it might be difficult to get them where you want them in a macro setting, since the units are much bigger, and have a larger emitting area, than speedlights. I recently bought a couple of Cheetah V850 speedlights. See: https://www.cheetahstand.com/categ...
by Peter De Smidt
Sat Mar 01, 2014 7:33 pm
Forum: Equipment Discussions
Topic: Bellows
Replies: 54
Views: 12203

I've owned quite a few Sinar cameras over the years, and I did make a mount for my D200. (I once photographed the moon using a 600mm apo lens on a Sinar P 8x10 with my D200 on the back, using two tripods.....what a fiasco. The moon is fast!) The big issue is vignetting by the camera lens mount, whic...
by Peter De Smidt
Fri Feb 07, 2014 10:25 pm
Forum: Equipment Discussions
Topic: 4x lenses and objectives shootout
Replies: 38
Views: 17873

Maybe a Rodagon D 75 f4.5? You'd have to get fairly lucky on the price. A Rodenstock (or Linos) Magnagon is a good performer. I paid less than $100 for a new one. It's optimized for 1:5 to 2:1, if I remember rightly. These lenses were supposedly used in some of the Imacon scanners. For my film scann...