Stephen Barrett

Of the 4 shots previously posted, #1, #2, #3 were taken on June 5 and #4 was taken on June 12. The following 4 shots show the same hilly cornfield at different times: May 30 is when I first noticed...

As Murry said:EXIF x ( 1200 / 215 ) = Effective Focal Length (Optical) If you want the zoom factor: EXIF x ( 50 / 215 ) = Zoom Factor (Optical) If you go past 50X zoom an you want to include the...

Hello Hossam,I managed to get CHDK working on my SX30 today. I think that it is the correct build, corresponding to the firmware version on my camera. The battery-level indicator and the colour...

Thanks, Ed and Murry, for the artistic comments. I happened across another one today from Frances Crick's "The Double Helix: A personal View":    But to convey my own feelings, I cannot do better...

Thanks for all your comments and suggestions RedFox88, Vision Light, Britney Elvis, Dale Buhanan and Lucy.      I agree, RedFox88, that the sky doesn't look good. Some of the shots are towards the...

Hello Hossam,You finally got the answer to your thread, "Give me Score".The "summa cum laude" from Augustin Man is well-deserved. I was reluctant to "grade" you because you are a teacher too. Thank...

Thanks OptiGlass, Hossam, Murry and VisionLight.That's hilarious Ed, but you do have me thinking about it.

Could #2 from Canon Rumors be the replacement for G1X with an even bigger sensor? http://thenewcamera.com/category/canon-rumors/ List of Canon Products that we know coming in 20131. Canon 70D2....

Beautiful photos, gardenerassistant.Were any of them taken at night with flash? Your telemacro demonstration seems to show that 3x macro and telemacro give you greater depth-of-field than 1x macro....

I agree, Biff. #1 is very beautiful. I hope that you don't mind, but I downloaded it "original size" to get the full impact as large as possible on my monitor. You must frame that and put it on the...

I think the result looks very good, Hossam, especially if we "view original size".It looks like a total DOF of approximately 20 mm, making the step size approximately 20 mm / 66 = 0.3 mm. Doesn't...

Hossam and Florida paddler expressed a wish to see what happens to the cornfield.  Here is a different part of the same cornfield (shot taken today, one week later than the previous shots):

Hello Hossam,I told you something wrong: I said, "I don't have a very good feel for how the depth-of-field varies with aperture and with distance, but I am guessing that a few centimetres is...

Congratulations Hossam!Both images look very good to me. I don't see much difference between the 15 shots and the 66 shots, except that the upper left and upper right corners are sharper for the 66...

Well Hossam,I can tell you are having fun.  Do you ever sleep? I just looked at the CHDK User Manual and there is already a script for focus...

Great job, Hossam!The detail in #1 is very impressive because it is close and has lots of light. It's very clean too. I find that, with closeup lenses, the greater the magnification, the more...

Thanks Hossam.That's a nice comparison with the clown.About 6 months ago, Vision Light started a theme about "other-worldly creatures".  Now he has us all copying...

That is very good, Hossam.  You can see the gears meshing and lots of texture.The first picture has more light so that you can see gears and the spring through the slot.Is that with Macro...

That sounds like a good idea waterwingz.  It is certainly very awkward trying to adjust the focus manually by turning the control ring.  With maximum zoom on my SX30 and the Raynox 250, I find that...

That is amazing detail and colour, Ed, especially for telemacro.  How does this compare with what you can get with a full frame SLR and macro lens?