Lives in United States Woodside, CA, United States
Works as a Physician
Joined on Mar 16, 2004


Total: 9, showing: 1 – 9
In reply to:

RichRMA: People are STILL paying $400+ for P&S's when interchangeable lens mirror-less cameras with the same or bigger sensors are available? Why?

It will never happen at the same price point. However, even though the "speed" of f2.8 is the same, this is only part of the picture. An f2.8 lens will allow greater control of depth of field on a larger format camera. Also, if all we are concerned with is "speed" then it could be argued that larger format cameras are more forgiving at high ISO.

Direct link | Posted on May 29, 2013 at 11:30 UTC
In reply to:

J D Tranquil: Thank you, Jeff. I've been a fan of yours for years and I'm glad to see your reviews here. Your reviews influenced my purchasing decision on some very good digital cameras. I'm very happy to see this head-to-head format and hope it continues.

I couldn't agree more. I got about 4 pages into this review and said to myself, "Did Jeff Keller write this?" Upon checking, I saw that of course he did.

Direct link | Posted on May 29, 2013 at 11:15 UTC
In reply to:

horsth: What's going on here. The Canon G15 gets gold with 76%, the Fuji X20 only silver with 77% ??

"There is no direct link between the overall score and the awards: they are not given automatically to cameras reaching a certain threshold. Crucially a camera can get an award even if a camera with a higher overall score didn't."

Direct link | Posted on May 29, 2013 at 11:12 UTC
On photo Fast Food in the Tailing challenge (2 comments in total)

Amazing shot.

Direct link | Posted on Jan 25, 2013 at 12:49 UTC as 1st comment

Brining in Jeff is a great idea. I hope to see continued collaboration in the future.

Direct link | Posted on Apr 27, 2012 at 00:31 UTC as 65th comment
On Preview:canong1x (1032 comments in total)
In reply to:

Rowland Scherman: Sensor size should, in every single case from now on, be written as a size in mm--and not in an arcane, alphabet soup or inch fraction format. The chart shown in this thread is a big help, thanks; but sensor size should be written in a standard format, ie its actual size. Why isn't it?

One reason is that the horizontal on a 3:2 has to be larger to cover the same surface area as a 4:3 sensor.
For example:
- If a 4:3 sensor has a 5mm diagonal, it will cover 12 square millimeters.
- If a 3:2 sensor has a 5mm diagonal, it will cover 11.5 square millimeters.
Simply stating area would be the least confusing, IMHO.

Posted on Feb 16, 2012 at 22:00 UTC
On Preview:canong1x (1032 comments in total)
In reply to:

D1N0: Jpegs are a little too contrasty, maybe from sharpening?

I agree these photos look weird. However, I don't think they are over-sharpened. Look at the Queen of Hearts; there are no obvious sharpening halos. The tone curve is steep; look at the gray card. Also, there are way more jaggies and moire than I am used to seeing. I am guessing this look comes down to a soft lens and weak AA-filter: there is a lot of fine detail in the central, green feathers and the brown fur, but the periphery is soft.

Posted on Feb 16, 2012 at 13:00 UTC
On Preview:canong1x (1032 comments in total)

Working on OS X now.

Posted on Feb 16, 2012 at 12:31 UTC as 77th comment
On Preview:olympusEM5 (1362 comments in total)
In reply to:

Valentinian: Could anybody please advice if the lens Zuiko Digital ED 12-60mm F2.8-4.0 SWD mounted on this camera with the adapter has the same AF speed as the m4/3 lenses.

This very issue - how well Four Thirds lenses focus with the adaptor - is of keen interest to many Olympus SLR users. I hope to see it addressed in the final Review.

Posted on Feb 8, 2012 at 23:19 UTC
Total: 9, showing: 1 – 9