Search found 233 matches

by Peter De Smidt
Tue Mar 17, 2015 6:39 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Mitutoyo 50x with chips in glass, tested
Replies: 11
Views: 5332

If I needed to fill in defects these days, I'd use something like: http://www.pelikan-shop.co.uk/shop/Pulsar/en_GB_SHOP.ShopTwo.displayShop.89486./518--30-ml-17-black One could always try some black electrical tape over the roundish damaged areas to see if blackening has any effect in these circumst...
by Peter De Smidt
Mon Mar 16, 2015 8:34 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Mitutoyo 50x with chips in glass, tested
Replies: 11
Views: 5332

I expect that you know this, but you can minimize flare caused by the damaged areas by blackening them. What do you use to blacken them? I've heard of people using a black thin-line Sharpie, but what I've used is Krylon Ultra Flat Black spray paint, as suggested by Richard Knoppow. Spray into a pla...
by Peter De Smidt
Mon Mar 16, 2015 7:40 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Mitutoyo 50x with chips in glass, tested
Replies: 11
Views: 5332

I expect that you know this, but you can minimize flare caused by the damaged areas by blackening them.
by Peter De Smidt
Thu Feb 26, 2015 9:22 pm
Forum: Equipment Discussions
Topic: Butt joint strength: epoxy versus screw
Replies: 29
Views: 10588

What a great test! The results match my experience with epoxy, which is that it's not reliable for a structural load, at least not with a butt joint.
by Peter De Smidt
Sat Feb 21, 2015 9:38 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: telecentric setup attempt: advice please
Replies: 6
Views: 2965

I had in mind using only one of the lenses for the larger coins, stopping down if it helps. Generally, starting with the simplest solution to set a benchmark seems like a good idea. That way you can tell if the added complexities are worth the trouble.
by Peter De Smidt
Sat Feb 21, 2015 9:06 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: telecentric setup attempt: advice please
Replies: 6
Views: 2965

Just to fill some space until Rik has his coffee, for those larger sized coins, are you stacking? My guess is that you don't have to for them. If so, then for them telecentricity wouldn't be important. It's helpful for stacking, especially if the subject has a fair amount of height.
by Peter De Smidt
Tue Feb 17, 2015 7:49 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Flash: prevent overheating, no flash: avoid motion blur?
Replies: 18
Views: 3474

Yes. Sorry about that. Here's a link to a reseller: https://www.cheetahstand.com/A-New-Bare-Bulb-Flash-Arrives-p/cl-180pcombo.htm With regular speedlights, the flash tube is in the main plastic housing. When the tube is fired, it heats up, and if this is done enough, the housing, and the stuff in it...
by Peter De Smidt
Tue Feb 17, 2015 3:19 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Flash: prevent overheating, no flash: avoid motion blur?
Replies: 18
Views: 3474

Godox bare bulb flashes, and the re-branded versions of these, are worth checking into. They are very resistant to over heading, and the lithium batteries are terrific. In addition, they are very easy to set. Adorama, Cheetahstand, and many others relabel these flashes. I have three of them that I u...
by Peter De Smidt
Mon Feb 09, 2015 6:58 pm
Forum: Equipment Discussions
Topic: Enlarger Lens
Replies: 9
Views: 1713

Fuji EX enlarging lenses are very high quality.
by Peter De Smidt
Sat Jan 10, 2015 12:47 pm
Forum: Equipment Discussions
Topic: gigamacro
Replies: 28
Views: 5093

You might want to talk to John at http://www.microcarve.com/mcMV1.html . The gigamacro people used a version of one of John's older designs.
by Peter De Smidt
Tue Dec 30, 2014 10:11 am
Forum: Equipment Discussions
Topic: Nikon Nikkor Ai-S Micro Nikkor 200mm F4 ***EX*** AIS
Replies: 9
Views: 1627

I use the non-micro 200f/4 AIS lens. It works fine, and it's cheaper than the micro lens. Since the tube lens is focused at infinity, I'm not sure that there'd be any advantage for this application with the micro lens.
by Peter De Smidt
Mon Nov 10, 2014 11:35 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: A Nikon myth exploded!
Replies: 9
Views: 2523

Wouldn't vibration effects play a bigger role at slower shutter speed, say around 1 second to 1/15th of a second?
by Peter De Smidt
Fri Nov 07, 2014 4:25 pm
Forum: Equipment Discussions
Topic: Macro rig
Replies: 55
Views: 42723

Great looking setup!
by Peter De Smidt
Thu Nov 06, 2014 1:00 pm
Forum: Equipment Discussions
Topic: Kowa enlarger lenses
Replies: 4
Views: 1747

Kowa lenses were high quality. I've owned a couple for large format photography. They're worth giving a try.
by Peter De Smidt
Sat Nov 01, 2014 8:32 am
Forum: General Discussion Forum and Community Announcements
Topic: Nikon Small World Contest - Winners
Replies: 6
Views: 2578

Nikon Small World Contest - Winners

Winners: http://www.nikonsmallworld.com/gallerie ... ompetition

Congratulations to the members whose photos were chosen!