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 Replies: 137 / Views: 18,628 |
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New Member
United States
28 Posts |
Focusing is kinda hard in some of my photos also, especially the pennies. It always is slightly too far away to be detailed, and when I get closer, it gets unfocused.
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Moderator
 United States
23522 Posts |
Quote:
It always is slightly too far away to be detailed, and when I get closer, it gets unfocused. That's a function of the lens - its' minimum focusing distance is all you're going to get, and that may still not be very large on the camera's sensor. |
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Pillar of the Community
 Canada
4944 Posts |
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How far are you from the subject coin? This lens has a minimum focusing distance of about 10". I'm beginning to think I never got its' best when I was playing with one. In those pictures, exactly 10". Give me 20 minutes, and I will post some pictures. I did some experimenting with distances. |
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Pillar of the Community
Canada
4944 Posts |
Edited by Canadian-Banknotes
01/13/2014 9:20 pm
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Moderator
United States
23522 Posts |
OK, this is getting ridiculous.  Keep in mind, though - minimum focusing distance and focal length are measured from the camera's sensor to the object, not the front of the lens. |
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Pillar of the Community
Canada
4944 Posts |
Quote:OK, this is getting ridiculous.  Was this the same lens you were using? Or a newer version of it? Quote:
Keep in mind, though - minimum focusing distance and focal length are measured from the camera's sensor to the object, not the front of the lens. Oh, So add a couple inches to each of those distances. Edited by Canadian-Banknotes
01/13/2014 10:03 pm
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Moderator
United States
23522 Posts |
Quote:
Was this the same lens you were using? Or a newer version of it?
This is the newer version. |
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Pillar of the Community
Canada
4944 Posts |
Which of those three sets would you say is the best?
Edited by Canadian-Banknotes
01/13/2014 10:48 pm
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Moderator
United States
23522 Posts |
The set from 10" is as good as it gets without seriously-dedicated equipment. It's upper-echelon stuff, even in a place as picky about photography as Coin Community.
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Pillar of the Community
Canada
4944 Posts |
Good to know, Thanks.
Will I be able to improve much with the set-up I am putting together, compared to what I can do with the 18-55mm lens?
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Moderator
United States
23522 Posts |
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Will I be able to improve much with the set-up I am putting together, compared to what I can do with the 18-55mm lens?
It will be night and day, but not until you start playing with 100% crops. What is needed to post pleasing images online is a very small percentage of the true capability of a bespoke rig. As nice as your images are, you're not going to do any variety studies with that lens, a capability within the envelope of even a *cheap* duplicating lens. You're coming close to putting a Morgan full-size on the sensor of the camera - a magnification of 0.5x, roughly - and 2x should be within easy reach of a duplicating lens. |
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Pillar of the Community
United States
9792 Posts |
There will be a mark on the camera showing you where the imaging chip is it should be on the side of the mirror box, it will have a circle with a line through it. That is the exact spot the chip lies inside the camera. (If you really want to try to measure).
"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013! ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector. See my want page: http://goccf.com/t/140440 |
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Moderator
United States
23522 Posts |
 On the XS, it's on the top of the camera, on the opposite side from all the top controls. |
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Pillar of the Community
United States
4038 Posts |
The newer (IS II) lens is pretty nice. I got one with an XS I bought online, but I honestly have not tried using it much. I was also impressed with the 18-55 kit lens that came with my D5000. Seems zoom lens design, at least in this range, has improved tremendously in last 5 years. I bought the newer 16-85 with my D7000, and it can go to 13" (to sensor plane...5.5" from lens) at 85mm, so is just a bit higher mag than the 55mm at 10". The 16-85 almost never comes off the D7000 unless I am doing something special with the camera.
CB, what seems odd about your shots is the difference in lighting. Why the change in light intensity as the coin moves closer to the lens? Are you using Av mode, or M? The shots should really look the same if the lights are the same.
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Pillar of the Community
Canada
4944 Posts |
Quote:
CB, what seems odd about your shots is the difference in lighting. Why the change in light intensity as the coin moves closer to the lens? Are you using Av mode, or M? The shots should really look the same if the lights are the same. When I was taking these pictures, I was trying to see how close I get to the coin, and still focus on it. I only moved the light enough to brighten the coin (You can see in the three pictures of the camera, that the lights didn't move too much),but never really adjusted them (Which I should have). I am taking all pictures is Manual (M) mode. I will retake the last set of pictures once I get home, this time with better lighting. Quote:
There will be a mark on the camera showing you where the imaging chip is it should be on the side of the mirror box, it will have a circle with a line through it. That is the exact spot the chip lies inside the camera. (If you really want to try to measure).
Thanks westcoin, I will take a look at that. Edited by Canadian-Banknotes
01/14/2014 9:47 pm
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Replies: 137 / Views: 18,628 |
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Posted 01/13/2014 8:07 pm
