by barros joao

alfama lisbon portugal lisboa architecture barros joao

Gallery: Portugal - Lisboa

Tags: lisbon portugal lisboa alfama architecture

Category: Uncategorized

Exif Information:
Make : Canon
Model : Canon EOS 5D Mark II
Date Time Original : 2012-01-25 18:17:30
Focal Length : 24/1
Shutter Speed Value : 1/99
Exposure Time : 1/100
Aperture Value : 9.9
F Number : 9.9
Iso Speed Ratings : 160
Flash : 16
Metering Mode : 2
Exposure Mode : 1
X Resolution : 72.0000000
Y Resolution : 72.0000000
Copyright : Joao Barros

Published: Monday 30th of January 2012 01:32:48 PM


joao barros
Hi Mike! Thanks (again) for your advises and technical comments. When I took this photo, to get a good DOF, I've choosed F14. Of course I have to believe in your optical knowledge, but if I've took it with F5.6, I would not get such details...Am I right?... Regards

joao barros
Hi Patsy! This old part of Lisbon is very rich in small details, I'm glad you enjoy it! Regards

Patsy Dunn


  Beautiful street scene with wonderful composition, details & colors.  Thanks for sharing.  Take care, Patsy

Mike Palermiti

Hi Joao,

I do like this view point and the scene capture.

I noticed your reply to Patsy, about this place being rich in detail.

For me, when I hear "detail", I think of using a good lens at its highest definition setting possible.  Now I understand that using F/14 with the Canon 24-105 F4 L lens produces a nice scene as shown here.

However, optically speaking, the details developed in this scene would be improved much more at F4 to F/5.6. I know this because I have formally tested this lens and all the Canon, Nikon, and so on lens in my optical lab facility. I have also field tested all these lens , too.

Again, for what you recorded , it might not be necessary to record any more details.

I view images for interesting content , but I study images for their highest definition possible.

This is mandatory in the scientific fields, the optical design and testing field that I have been involved in for over 45 years now.

Best Regards,  Mike

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