dr_X

Lives in United States Bellingham, United States
Joined on Mar 27, 2011

Comments

Total: 8, showing: 1 – 8
In reply to:

Debankur Mukherjee: Drones are dangerous it can be used by terrorist ........their sale should be controlled.......

Maybe we should start putting guns on drones, because guns are completely safe and don't need to be regulated.

Link | Posted on Oct 20, 2015 at 14:17 UTC
In reply to:

DrummerCT: Can someone explain further, "the F2.8 lens may seem fast, but when you take into account that it is really the equiv. of F8 wide open"

F2.8 is not F2.8?

The full answer is that the lens is not 24-200mm. It is 24-200mm "equivalent field of view". The lens is actually 8.8-73.3mm and the depth of field depends on the aperture and the focal length. (or more accurately, the focal length and diameter of the entrance pupil. The aperture being a function of the focal length and entrance pupil.) If you talk about equivalent field of view, then the sensor size becomes an artificial factor.

Link | Posted on Sep 5, 2015 at 22:18 UTC
On article Opinion: Did Sony just do the impossible? (1071 comments in total)
In reply to:

justmeMN: This opinion piece includes an impossible amount of hyperbole. :-)

dpr opinion pieces are rare, but this one is well placed (in my opinion). The hyperbole is s well, as dpr might have to create a new higher award for this camera as it potentially blows all the "gold award" bodies out of the water. Platinum award anyone?

Link | Posted on Jun 23, 2015 at 17:30 UTC
In reply to:

rialcnis: I'll take one of each. The body, the drone, the screen, the4K recorder, the remotes, the follow focus and rail system and all the attachments. Now how much is that?

Someone needs to come out with a $500 4k recorder and this studio cam will flying off the shelves.

Link | Posted on Apr 14, 2015 at 20:59 UTC
In reply to:

Josh152: This nice and all but what I would love to see from Tamron is a wide angle f/2.8 zoom on the level of their 24-70 and 70-200 so Tamron has a full trinity to compete with the Nikon and Canon versions.

Aerial photography = sense.

Many other low light, static subject, moving camera uses.

Link | Posted on Mar 3, 2014 at 17:23 UTC
In reply to:

Josh152: This nice and all but what I would love to see from Tamron is a wide angle f/2.8 zoom on the level of their 24-70 and 70-200 so Tamron has a full trinity to compete with the Nikon and Canon versions.

Yes. with VC.

Link | Posted on Feb 6, 2014 at 15:01 UTC
On photo Perseid Meteor shower over Mt. Baker in the Starry Starry Night ! challenge (4 comments in total)

oh wow, I guess I didn't check back to see that people liked the shot. :) I focused on the mountain/sky. The meadow in the foreground is not sharp, but I liked it for color and balance drawing you into the sky.

Link | Posted on Jan 31, 2013 at 06:51 UTC as 1st comment
On article Canon announces seven EF Cinema lenses (68 comments in total)
In reply to:

Tom Caldwell: Just think of the primes as limited editions (prototypes?) for some as yet unannounced "stills" camera for the masses. Interesting that not only can they be focused manually but they have manual aperture control and will suit a FF sensor. This is a major departure from the current EF electronically controlled aperture. Is Canon about to obsolete it's current EF range of lenses? - hardly dare one might think.

Pricing? Adjust demand to cover the hand assembly of very specialist lenses which would never be expected to sell in any quantity. Too big a demand? They will put the price up.

Manual aperture control is standard and necessary for most film shoots and likely would not be carried over to still cameras.

Link | Posted on Nov 6, 2011 at 23:35 UTC
Total: 8, showing: 1 – 8