Macro
Apr 12, 2012 20:58:31 #
I have a Tamron 75-300 1:4-5.6 LD lens with the designation
TELE-MACRO(1:3.9).
What is the significance of TELE-MACRO(1:3.9).
TELE-MACRO(1:3.9).
What is the significance of TELE-MACRO(1:3.9).
Apr 12, 2012 21:11:02 #
TELE-MACRO(1:3.9) means that the lens will focus to about 1:4 magnification (1/4 life-size).
Apr 12, 2012 21:28:45 #
Apr 12, 2012 23:14:44 #
In telephoto mode your minimum focal length is maybe five or six feet, in Micro you get down to about 1 1/2 feet. My Tamron in Micro of a Danilion.
Hand held at about 18 inches.
Apr 13, 2012 15:36:50 #
John Brown
Loc: New Mexico
Use close-up lenses, a +1, +2 or a +3 and this lens will work better as macro.
Apr 13, 2012 19:36:43 #
It's the image ratio. At your 1.3.9 it's basically telling you that the image will be 1/4 lifesize (1:4). I have an old Rokkor myself for my Minolta with the same spec's.
Apr 14, 2012 00:25:55 #
John Brown
Loc: New Mexico
All this about image size has little meaning these days since digital cameras have different size sensors. What was life size for film is greater than life size for most digital cameras.
This was also true, in the film days, when using different film sizes.
Life size for 35mm film was very different than for 120 size film or for 4 by 5 film when it comes to the print.
This was also true, in the film days, when using different film sizes.
Life size for 35mm film was very different than for 120 size film or for 4 by 5 film when it comes to the print.
Apr 14, 2012 02:06:18 #
True macrophotography is at least 1:1. A 1:4 lens is not a true macro, although the use such terminology is a commonly accepted practice. A 2:1 lens (for example) is a true macro. In practice, a lens such as yours can only attain macro status by addition of extension tubes or a bellows assembly.
Apr 14, 2012 02:19:40 #
John Brown wrote:
WRONG!All this about image size has little meaning these days since digital cameras have different size sensors. What was life size for film is greater than life size for most digital cameras.
This was also true, in the film days, when using different film sizes.
Life size for 35mm film was very different than for 120 size film or for 4 by 5 film when it comes to the print.
This was also true, in the film days, when using different film sizes.
Life size for 35mm film was very different than for 120 size film or for 4 by 5 film when it comes to the print.
A 1:1 (life-size) image of a dime, taken with a 35-mm film camera, a 4x5 film camera, a APS-C sensor camera, or ANY camera, means that the captured image of the dime is exactly the same size as the dime. The film or sensors are different sizes, but the dime, and the captured images of the dime, are exactly the same size.
Apr 14, 2012 11:55:37 #
John Brown
Loc: New Mexico
Yes that is true, but is not the dime larger than some digital sensors? So to fit the dime on the sensor is not life size.
Again all this is mute. What about life sizes of a rose?
Again all this is mute. What about life sizes of a rose?
Apr 14, 2012 12:18:52 #
I'm confused, new to the micro/macro pictures taking. So if I put a dime down, do I get as close to it as my focus will allow, and then when printed without any changes should be the same a the dime I have? (hopefully the same size as everyone else's dime! I have a Nikkor 40mm Micro lens on a D5100 how do I get a true Micro shot? Is micro when after the picture is taken it is not cropped? HELP
Nikonian72 wrote:
quote=John Brown All this about image size has li... (show quote)
Apr 15, 2012 01:39:48 #
John Brown wrote:
Yes that is true, but is not the dime larger than some digital sensors? So to fit the dime on the sensor is not life size.
Again all this is mute. What about life sizes of a rose?
Again all this is mute. What about life sizes of a rose?
It is scientifically impossible to take a 1:1 image of a subject that is larger than the sensor (whether digital or film) on which the image is recorded. Yhat is why you will never see a whole 1:1 image of a silver dollar on 35mm film; the dollar will fit across the 36mm width of the negative, but not within the 24mm dimension. You CAN take a true macrophotograph of a silver dollar on 120 film.
If you take a 1:4 image and enlarge the image 4X, that is NOT macrophotography. If you take a full width shot of a 3/4" penny with a 1/2" digital sensor, that is a 2/3 image and will have to be enlarged 1.5X to yield a full width photo of a penny.
Someone please check my math. I'm exhausted!
Apr 15, 2012 02:46:54 #
John Brown wrote:
A U.S. dime is 17-mm diameter. A U.S. quarter is 24-mm diameter. A Nikon APS-C sensor is 23.6-mm x 15.8-mm. A true 1:1 (life-size) macro photo of a dime laid atop a quarter, taken with an APS-C sensor will clip about 1.2-mm from dime, top-to-bottom, and just capture the quarter side-to-side.Yes that is true, but is not the dime larger than some digital sensors? So to fit the dime on the sensor is not life size.
True macro photos taken with smaller sensors will see LESS of dime and/or quarter, and larger sensors will see more, but macro captured images of quarter and dime are exactly the same size, no matter the size of sensor (or film).
1:1 (life-size) macro photo of Dime & Quarter on a Sony APS-C Sensor
Apr 15, 2012 03:08:56 #
John Brown wrote:
A true 1:1 (life-size) photo of a rose will show only part of the rose. A full image of a rose (with very little background) is a close-up photo; and a full image of a rose with lots of background is just a snapshot.What about life sizes of a rose?
Dew on a Rose at 1:1 (life-size)
Apr 15, 2012 03:19:24 #
ferrinmike wrote:
Manually setting your focus closest to lens is called Minimal Working Distance (MWD). Any true macro lens should be able to capture 1:1 at MWD. A Nikkor 40-mm macro lens on a Nikon D5100 (APS-C sensor) obtains a MWD of about 60-mm (2.36-inches).So if I put a dime down, do I get as close to it as my focus will allow, and then when printed without any changes should be the same a the dime I have? I have a Nikkor 40mm Micro lens on a D5100 how do I get a true Micro shot? Is micro when after the picture is taken it is not cropped?
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