Another lens question
Dec 9, 2016 17:54:56 #
Hi, thank you all that answered my previous lens question may I ask one more, I am looking at two right now and could use some advice please first one is the Olympus 25mm f1.8 says focus is 9.4, magnification 0.12, and element/group 9.7. The second one is Panasonic LUMIX G 25 mm F1.7 focus 9.84, magnification 0.14, and element/group 8.7. I don't really know what those numbers are for, so I would appreciate someone to help guide me what I need it for is low light can't use a tripod, thank you in advance for the help
Dec 9, 2016 18:22:05 #
You are talking about two fast lenses that are equivalent to a 50mm lens using full frame bodies. I am not familiar with any of the two but if you are into low light photography and the equivalent of a 50mm lens is what you need both will do the job.
In my particular case, when buying a prime lens my priorities are focal length and maximum lens opening. I am sure focus refers to the closest distance the lens will focus. Magnification usually makes reference to the size of the image compared to life size. The group of elements are simply an indication of how the lens is built optically like nine optical elements arranged in 7 groups. Manufacturers often include here words like aspherical, VR, special coatings, LD glass and so on.
All you need to know is which is the focal length that you need for your photography style and if the maximum aperture will be enough for the job you have in mind.
In my particular case, when buying a prime lens my priorities are focal length and maximum lens opening. I am sure focus refers to the closest distance the lens will focus. Magnification usually makes reference to the size of the image compared to life size. The group of elements are simply an indication of how the lens is built optically like nine optical elements arranged in 7 groups. Manufacturers often include here words like aspherical, VR, special coatings, LD glass and so on.
All you need to know is which is the focal length that you need for your photography style and if the maximum aperture will be enough for the job you have in mind.
Dec 9, 2016 19:57:28 #
I have Panasonic's Leica-designed Summilux Micro 25mm f/1.4 (Model H-X025) - it is fast and extremely sharp. The lens accepts 46mm filters and includes both caps, a lens hood and a soft case. I bought it new from B&H Photo in Nov. 2015 to use with an Olympus Pen E-PL5 mirrorless camera. The lens is in excellent condition and I have absolutely no complaints, but need to pare down my gear. I would be willing to sell it for $370. I'm a regular UHH member and have received 100% positive feedback from previous UHH gear sales. PM me if this lens sounds interesting. Thanks. /Ralph
Dec 9, 2016 19:57:28 #
Dec 9, 2016 21:04:10 #
Where are you getting those numbers? I've never heard a lens described that way before.
Dec 9, 2016 23:06:19 #
mcveed wrote:
Where are you getting those numbers? I've never heard a lens described that way before.
It was in the specs
Dec 9, 2016 23:07:09 #
Dec 9, 2016 23:27:04 #
catgirl wrote:
When I was trying to compare
What specs? What document or website gave you those numbers? I'd like to locate the source to find out what they are talking about.
Dec 10, 2016 07:22:44 #
Spot on reply as to what the figures correspond to. Either one would work for your needs although it seems the Panasonic is a bit less expensive.. I opted for the Oly 45 mm F 1.8 myself for a fast, low light lens as I wanted a longer focal length.
camerapapi wrote:
You are talking about two fast lenses that are equ... (show quote)
Dec 10, 2016 13:35:37 #
ballsafire
Loc: Lafayette, Louisiana
I understand all of your interpretations of the lens numbers except the one using MAGNIFICATION-which was 0.12 - interpreted as "size of image compared to life-size". I have a hard time with visualizing these numbers: I know 1:1=life size; 2:1=twice life size; 1:2=half life size, the first number being the object's size and the second number being the image size (whatever that means???). I understand that you can make fractions out of these numbers ex. 1/1, 2/1, 1/2 but now we get this 0.12 number and I don't know how to interpret this!
Could you help me understand this number more clearly? I appreciate your help, thank you in advance!
Could you help me understand this number more clearly? I appreciate your help, thank you in advance!
camerapapi wrote:
You are talking about two fast lenses that are equ... (show quote)
Dec 10, 2016 14:53:10 #
ballsafire wrote:
I understand all of your interpretations of the le... (show quote)
.12 means the image is a hair smaller than 1/8 life size on the sensor at the lens' closest focusing distance. (.125 = 1/8 exactly) A macro lens goes to at least 1:1 or life size on the sensor. A true micro lens magnifies 10X or more.
Dec 10, 2016 14:57:44 #
catgirl wrote:
Hi, thank you all that answered my previous lens q... (show quote)
If you use a Panasonic camera, I'd lean toward the Panasonic or Leica 25mm. If you have an Olympus camera, I'd lean that way. While the brands share the m4/3 mount, there are subtle reasons why the native lenses perform better on their own brands. Go here for more info:
http://hazeghi.org/mft-lenses.html
Dec 10, 2016 19:32:37 #
mcveed wrote:
What specs? What document or website gave you those numbers? I'd like to locate the source to find out what they are talking about.
Olympus when I brought up the comparison chart for the 25mm and the 45mm
Dec 10, 2016 19:34:06 #
ballsafire wrote:
I understand all of your interpretations of the le... (show quote)
sorry I don't know just saw it when I was doing the comparison for both lens, I don't know what they mean either
Dec 10, 2016 19:34:37 #
burkphoto wrote:
.12 means the image is a hair smaller than 1/8 life size on the sensor at the lens' closest focusing distance. (.125 = 1/8 exactly) A macro lens goes to at least 1:1 or life size on the sensor. A true micro lens magnifies 10X or more.
thank you for that information burkphoto
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