Search found 107 matches

by cube-tube
Fri Dec 06, 2019 6:32 pm
Forum: Equipment Discussions
Topic: Flash(es) recommendation
Replies: 63
Views: 5924

Thank you, mawyatt!!

Exactly the info I was looking for.
by cube-tube
Thu Dec 05, 2019 8:06 pm
Forum: Equipment Discussions
Topic: Flash(es) recommendation
Replies: 63
Views: 5924

I'm surprised nobody has mentioned overheating... I've been using a flashpoint evolv 200 (godox ad200) and after about 100 shots at 1/4 power it overheats and falls back to a 10s recycle time. Same issue with some cheap neewer speedlights. Any advice on how to go faster? Ideally with speedlights/str...
by cube-tube
Thu Jul 04, 2019 11:46 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pollen, Stomata
Replies: 6
Views: 1554

Re: Pollen

Thank you!!
Olympusman wrote:about 50% of images submitted were from artistic microscopy.
Interesting... I may submit something for next year.
by cube-tube
Wed Jul 03, 2019 3:50 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Acrea Moth - additional photo
Replies: 2
Views: 1057

Excellent! I really enjoy seeing the same subject at multiple magnifications.
by cube-tube
Tue Jul 02, 2019 3:30 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pollen, Stomata
Replies: 6
Views: 1554

Pollen, Stomata

https://photos.smugmug.com/photos/i-8RpGnTb/0/907d682d/X2/i-8RpGnTb-X2.jpg I forget what plant this stamen came from, honesty. https://photos.smugmug.com/photos/i-44HNSMf/0/c96ecc64/X2/i-44HNSMf-X2.jpg Pollen and stomata on the stamen of a tiger lilly. Both Canon 6D, Mitutoyo 20x, DCR-150, pyramid ...
by cube-tube
Tue Jun 18, 2019 7:56 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: "dead" or "hot" pixels?
Replies: 8
Views: 1914

Thanks all. I'll try decreasing the blackout time in my exposure. I'm running a single speedlight (evolv 200) at 1/128 power, but it overheats if I make more than one exposure every 10 seconds, which is how I arrived at 10 seconds of darkness/no motion, and 2 seconds to close and open the shutter an...
by cube-tube
Mon Jun 17, 2019 3:30 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: "dead" or "hot" pixels?
Replies: 8
Views: 1914

"dead" or "hot" pixels?

To me these multicolored "dust trails" look like dead pixels. Has anyone else experienced these? Could it be some other kind of sensor noise? Can they be minimized with a shorter exposer? I'm shooting at base ISO on a Canon 6D, ~8 second exposure, with a single flash at ~7 second mark. Thanks 100% c...
by cube-tube
Mon Jun 17, 2019 3:22 pm
Forum: Beginners Macro
Topic: (live)small fish specimen holder suggestions?
Replies: 3
Views: 2115

Yes it keeps them alive! It may only work for young fish, though. I'm not sure about large fish. It melts at a low enough temperature to not hurt the fish, and it is permeable enough to allow them to breathe. I have a bit of experience using it for live imaging in zebrafish larvae. At that stage the...
by cube-tube
Mon Jun 17, 2019 7:17 am
Forum: Beginners Macro
Topic: (live)small fish specimen holder suggestions?
Replies: 3
Views: 2115

In a laboratory setting, fish are embedded in low temperature agarose (https://www.thermofisher.com/order/cata ... t/16520050) for imaging, but it's very expensive.

Maybe you can come up with a similar solution.
by cube-tube
Sun Jun 09, 2019 12:15 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cup Fungi
Replies: 5
Views: 977

Third image is spectacular!
by cube-tube
Sun Jun 09, 2019 12:07 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Telecentric optics on the edge
Replies: 5
Views: 2873

Thanks for the link.

The part about low-quality edges for 0% scaling when magnification is low and depth of field is high answers my question.
by cube-tube
Sun Jun 09, 2019 8:18 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Telecentric optics on the edge
Replies: 5
Views: 2873

What are the advantages of using true telecentric optics over just setting scale adjustments to 0 when stacking?
by cube-tube
Fri Jun 07, 2019 6:59 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Bumblebee Foot
Replies: 13
Views: 1522

rjlittlefield wrote: I'm the fellow who wrote Zerene Stacker
Nice to see that student discount 8)

I tried being much more aggressive with the sharpening/clarity/dehaze and I think it does look better.

Image
by cube-tube
Fri Jun 07, 2019 4:52 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Bumblebee Foot
Replies: 13
Views: 1522

Sure here are some annotations: https://photos.smugmug.com/photos/i-cpVfL96/0/247d56ea/X4/i-cpVfL96-X4.jpg I guess I was just using "halos" as a catch-all for a few different kinds of artifacts. To me, #1 looks kind of smudged, like the highlights are bleeding over into darker areas even though the ...
by cube-tube
Fri Jun 07, 2019 1:31 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Bumblebee Foot
Replies: 13
Views: 1522

Good to know thanks. I'll try out Zerene.