Jump to content
© © 2013

...


gsaphoto

Exposure Date: 2013:08:24 15:22:22;
Make: Canon;
Model: Canon EOS 60D;
Exposure Time: 1/60.0 seconds s;
FNumber: f/14.0;
ISOSpeedRatings: ISO 800;
ExposureProgram: Other;
ExposureBiasValue: +42949672950/6
MeteringMode: Other;
Flash: Flash did not fire, compulsory flash mode;
FocalLength: 100.0 mm mm;

Copyright

© © 2013

From the category:

Macro

· 52,296 images
  • 52,296 images
  • 168,993 image comments


Recommended Comments

It would be lovely to see this one enlarged Grigoriy!! It is a beautiful butterfly, as are the surroundings. I'm always trying to learn more, and have thought of getting a teleconverter. Is it because of the Teleconverter that you have to stop down this excellent f/1.8 Lens so far??? I am not really sure of the effects of a Teleconverter on image quality. My Dad has one that I have thought of borrowing. Hoping you will be able to explain this to me if possible.

Many thanks, Gail

Link to comment

Thanks to every one for your comments.

Gail - I'm using not so expensive Canon 50mm f/1.8 lens. It's not macro lens, but fast by F number. This particular 2x teleconverter increase magnification by 2x and convert 50mm lens into 100mm lens without loosing any focal distance. For example you have optics with magnification ratio 1:1 this lens give 2:1 ratio. One drawback that teleconverter itself make image soft on f1.8-f5.6. It always need to be set  more then f/11, as result you need increase ISO. In this particular presentation ISO 1600. Canon well reduce ISO noise up to this number. Also, you can use slower shutter speed... but it not useful at all when taken insect's images.    

Link to comment

Thank you for explaining this to me Grigoriy. Could you use Extension Tubes that would not degrade the image, instead of a Teleconverter (I am getting some extension tubes, very inexpensive), and hoping I would not have to stop down the lens so far. This is all new to me. But I do appreciate your detailed explanation, you are very kind to take the time.

sincere thanks, Gail

Link to comment

Hi Gail. You can use extension tubes, but you will have problems with focal distance. It will be reduced and you need to be close to object, that does not work well with bugs. I did play around with extension tubes, but prefer teleconverter. It did not change focal distance, give nice magnification, and most important I can stay far enough from the bug. About f/numbers. Better take close up images of bugs at daylight. Where you are more flexible to set desire aperture, ISO and so on.   

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...