Search found 16 matches

by VinodkumarSelvaraj
Tue Mar 05, 2019 11:57 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

Microscope objective

Thank you guys for all your knowledgeable input. I have made my mind for the purchase of the camera, lenses and other accessories, except for the objective. One last request to help me. I need more magnification for fungi that are relatively smaller than insects. So decided to stick to 50X objective...
by VinodkumarSelvaraj
Tue Mar 05, 2019 7:51 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

... I shall go with the canon EF 200mm f/2.8L II USM. I also read that the prime lenses are sharper than zoom lenses. Thanks or your advice. Before making any expensive buy, best think in the whole setup you need and the budget at your disposal. A modern water sealed IS L Canon zoom or tele es good...
by VinodkumarSelvaraj
Tue Mar 05, 2019 7:11 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Use of telephoto lens and adapter for microscope objectives
Replies: 2
Views: 2464

1- At the microscope the through-the-eyepieces visual image magnification is computed by comparison of the same object viewed with the naked eye placed at 250mm. It is the result of the product of objective magnification x eyepiece magnification (and x whatever intermediate magnification device ins...
by VinodkumarSelvaraj
Mon Mar 04, 2019 7:55 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fungi
Replies: 4
Views: 2596

Re: Fungi

I am assuming this is some sort of fungi. It is growing on a willow leaf and most of the other leaves were covered in similar colonies. At first I thought is was a waxy secretion from some weird scale type insects, but as soon as I looked under magnification I knew I was wrong. There are crown shap...
by VinodkumarSelvaraj
Mon Mar 04, 2019 7:40 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Use of telephoto lens and adapter for microscope objectives
Replies: 2
Views: 2464

Use of telephoto lens and adapter for microscope objectives

Hi Guys!! I am happy to be in the forum. I am reading a lot and gaining knowledge in extreme macro. I should first thank the family of photomacrography.net. I have a question regarding magnification and I am confused with that. The things which we see through a microscope eye piece may have a magnif...
by VinodkumarSelvaraj
Mon Mar 04, 2019 7:18 pm
Forum: Beginners Macro
Topic: Microfungi setup - which tube lens?
Replies: 38
Views: 19563

Hi, After some delay, I've managed to get my system working to a stage where it's looking promising. My setup is: Canon 6D Nikon 200mm Nikkor Ai f/4 tube lens Adaptor 20x Mitutoyo objective (thanks Mike :-) ) Canon 600EXII-RT Speedlight (with tissue paper as diffuser) Canon Speedlight transmitter S...
by VinodkumarSelvaraj
Mon Mar 04, 2019 12:42 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

Others seem to know better what the disadvantages of zoom lenses might be, but I guess it depends on the specific lens. The advantage that was mentioned is you can get lower magnification with the same objective, but how much also depends on the specific objective and lens. It's been a while since ...
by VinodkumarSelvaraj
Mon Mar 04, 2019 11:38 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

ChrisR wrote:I think for photographing fungi in the field, a tilting screen is a major advantage, as is wifi control for stacking.
If you're using flash I can't think of a reason why one camera would be significantly better than another. The vibration issue is moot.
Thank you Chris.
by VinodkumarSelvaraj
Mon Mar 04, 2019 7:03 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

Re: Beginner in extreme macro

3. Nikon CF Plan 50X 0.55 inf/- EPI ELWD This is an excellent objective. It covers well on APS-C even when used with a 100 mm tube lens, so as to give effectively 25X NA 0.55 . See for example the blowfly proboscis at http://www.photomacrography.net/forum/viewtopic.php?p=103825#103825 . One drawbac...
by VinodkumarSelvaraj
Mon Mar 04, 2019 6:49 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

If it's only for high magnification work and you might use continuous light, go for the 7D2 (or something cheaper). 20/24Mp is immaterial really, it's only about 10% on a side. For bells and whistles, and a somewhat more modern sensor (Quality is very close), the 80D. The folding/touch screen is de...
by VinodkumarSelvaraj
Sun Mar 03, 2019 7:15 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

Re: Beginner in extreme macro

3. Nikon CF Plan 50X 0.55 inf/- EPI ELWD This is an excellent objective. It covers well on APS-C even when used with a 100 mm tube lens, so as to give effectively 25X NA 0.55 . See for example the blowfly proboscis at http://www.photomacrography.net/forum/viewtopic.php?p=103825#103825 . One drawbac...
by VinodkumarSelvaraj
Sun Mar 03, 2019 7:12 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

Re: Beginner in extreme macro

I will go with a Canon 80D I'm checking you understood what I wrote about vibrations? If you use the Electronic Front Shutter Curtain to avoid vibration, note that it is NOT vibration-free on some Canons. I don't know about all the models especially current ones. Try it in a shop Select Live View a...
by VinodkumarSelvaraj
Sat Mar 02, 2019 7:55 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

Re: Beginner in extreme macro

C. I have two more doubts from your advice. 1.May I know the reason why 70-200 is better and 70-300 will be worse. I was thinking that if vignetting is an issue then 300mm should perform better than a 200mm and may give more magnification. Will the sharpness will be worse in 300mm? Please make me u...
by VinodkumarSelvaraj
Fri Mar 01, 2019 11:43 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

Re: Beginner in extreme macro

1. Which is better for extreme macro APS-C or Full frame? As we all know APS-C gives more magnification due to the smaller sensor. However, some people say FF gives better image quality so we can crop our desired portion without loss of image quality. Some say if it is cropped it will loose pixels ...
by VinodkumarSelvaraj
Fri Mar 01, 2019 11:15 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Beginner in extreme macro
Replies: 29
Views: 8915

The decision of FF vs. APSC is a lot more specific and depends on the exact models of cameras, your intended magnification, your lenses and how adjustable they are. In general I would suggest an APSC camera for almost any macro unless you definitely need an FF camera. Sorry if this is long and I ho...