Search found 288 matches

by jgknight
Thu Mar 26, 2015 6:29 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pea and Bean Weevil
Replies: 9
Views: 1489

thank you John, nice work! any idea if this weevil is native australian? or transplanted/imported? Thanks for looking Carmen. The only info I have found so far is: "Several species of Sitona are important agricultural pests of legumes, especially in its native regions and introduced populations in ...
by jgknight
Wed Mar 25, 2015 6:23 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Stink Bug Head from above
Replies: 9
Views: 1460

I love these little guys too. Nice lighting. Thanks for posting.
by jgknight
Sat Mar 21, 2015 6:41 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Meat Ant (Iridomyrmex sp) 10x magnification
Replies: 8
Views: 2237

John Super cool!! Hey, how about shooting a "jumper" ant? (JackJumper??? What is the name of it?) I hear they are really bad insects and pack a powerful bite. Your result is amazing! Mike Thank you for your comments Mike. I want to find a really big Ant and shoot the individual part if I can but it...
by jgknight
Sat Mar 21, 2015 4:04 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Meat Ant (Iridomyrmex sp) 10x magnification
Replies: 8
Views: 2237

That is a spectacular image John. I am surprised it only took 88 frames at 10x. I recently gave 10x a try and after 1,100 images for three stacks (400, 400, 300 images). And they all suck. Unfortunately it takes 7 hours to convert, align, and stack any one set before knowing how much the final imag...
by jgknight
Fri Mar 20, 2015 9:15 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pea and Bean Weevil re-shoot
Replies: 3
Views: 923

Thank you for looking.
by jgknight
Fri Mar 20, 2015 6:58 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pea and Bean Weevil re-shoot
Replies: 3
Views: 923

Pea and Bean Weevil re-shoot

I was having some confusion over the finished size of the stacked subject and Rik kindly shed some light on the subject for me. Rik suggested that next time I did a stack, I should shoot one frame stopped down to compare the size of the subject in both photos. This stack is 453 images at 0.0153mm in...
by jgknight
Wed Mar 18, 2015 11:43 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pea and Bean Weevil
Replies: 9
Views: 1489

Okay Rik, I understand what you are saying now. Looking at the Weevil with the naked eye, it does look long and skinny in the flesh but the stack has made it look deeper in the vertical axis, but I guess that is because the subject is only 10mm in front of the objective. I will try a single exposure...
by jgknight
Wed Mar 18, 2015 10:39 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pea and Bean Weevil
Replies: 9
Views: 1489

Thanks for you explanations Rik. I would imaging it is perspective foreshortening as you described and I have attached the original image after processing before I shrunk the height to give it a more "normal" appearance. I shrunk the subject in height to occupy the red area. http://jgknight.smugmug....
by jgknight
Wed Mar 18, 2015 7:04 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Pea and Bean Weevil
Replies: 9
Views: 1489

Pea and Bean Weevil

Tried another stack of 250 images, increments of 0.012mm on a Weevil. One thing I have noticed when stacking is the subject seems to get "fatter" as the stack progresses. Does anyone have a "cure" for that? I guess it might be because of the close proximity of lens to subject that distortion occurs....
by jgknight
Mon Mar 16, 2015 8:51 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Very Small Fly
Replies: 2
Views: 1096

Re: Very Small Fly

Nicely shot! Interesting thing I learned yesterday that the mouth has no chewing parts, it is only used for drinking liquids. This feature is very common among flies. For a closer view of the structure, see HERE and the follow-up HERE . Quite possibly your fly does not have the "teeth" shown in tho...
by jgknight
Tue Mar 10, 2015 7:14 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Very Small Fly
Replies: 2
Views: 1096

Very Small Fly

Tiny Female Fly 3.5mm body length I found this very tiny fly last evening. It was very slow in its movements and was probably on its last legs. (Is a fly that cannot fly, called a walk?) Interesting thing I learned yesterday that the mouth has no chewing parts, it is only used for drinking liquids. ...
by jgknight
Fri Mar 06, 2015 6:45 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Meat Ant (Iridomyrmex sp) 10x magnification
Replies: 8
Views: 2237

Fine picture, John. :) The micrometer head is pulling the stage? What's the vernier part doing? Thanks for asking Chris. I don't really need the vernier for the stack, but it does come in handy for starting and finishing the stack. It can be set to zero to get a fairly accurate depth in mm of the f...
by jgknight
Thu Mar 05, 2015 6:51 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Meat Ant (Iridomyrmex sp) 10x magnification
Replies: 8
Views: 2237

Truly excellent picture, John. This one look less 'hot/blown out' than the previous posted ant and uses good diiffusion. Any additional info on the "10:1 N.A.0,30 from Germany" ? Thank you Fred. I took note when you mentioned about the blown out part and decided to try to fix it. The lighting consi...
by jgknight
Wed Mar 04, 2015 11:25 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Meat Ant (Iridomyrmex sp) 10x magnification
Replies: 8
Views: 2237

Meat Ant (Iridomyrmex sp) 10x magnification

Further to my recent image of this ant, here it is again but this time 10x mag of the mandible region only. I have made modifications to the lighting set-yo to even out the hot spots as best I can with limited resources. Canon 5D Mk2 - 10:1/0.03 objective http://jgknight.smugmug.com/Extreme-Macros/i...
by jgknight
Wed Mar 04, 2015 6:15 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Meat Ant (Iridomyrmex sp) ?
Replies: 8
Views: 1177

Thank you for your kind comments, Thanks for looking.