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 Replies: 43 / Views: 5,672 |
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Pillar of the Community
 Canada
2784 Posts |
ben doing some picture taking with a few different lens el nikkor 75mm el-omegar 75mm vivitar 75mm componar 80mm. all exceptional wonderful lenses. my problem is that. I find my coins appear better than they are with these lens. so I read a other forums and finally found a lense. that when I take and image the image and the coin match. still use my canon camera the lens I brought of ebay came already attached to a bellows. the lens is Minolta auto bellows rokkor 1:4 100 mm. here is and image from that lense. I am going to sell my collection and need the images to match my coins. I find this my best match any suggestion greatly appreciated. I also tried a super takumar 50mm same out come. they are easy to work with and easy to light the coins.  |
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Pillar of the Community
 United States
4038 Posts |
What about the image from the 100mm is more realistic than the other lenses you mentioned? Are you lighting them the same, or is the 100mm giving you different lighting choices?
Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Pillar of the Community
Canada
2784 Posts |
yes I am ray. but I read some more of your threads. I think I know what I am doing wrong with the enlargers lens dave got me to read and study that Cambridge site on photography. what you have said and what dave has explained. see ray I thought I was suppose to fill. the image block in liveview. after doing more reading then it came to me what you guys are saying. if you extend the bellow. I increase the magnification giving me a shallow depth of field. that will change the appearance of the coin. ray am I correct in saying that. so would that not make the coin appear possibly better than it is. ray In November this year I am selling every thing in my collection. so any help I appreciate very much.
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Pillar of the Community
United States
4038 Posts |
rocky...I suppose the shallow DOF would cause a bit of fuzziness so that may make it a little "softer" looking and possibly look "better". Ultimately you need to decide what will give the best "look" for selling the coin, and run with it. It may be that maximum sharpness is not the answer for ebay. A suggestion...if this is the case, you can head a slightly different direction with the enlarger lenses...stop them down more than usual. Try shooting at f/11, f/16, and f/22 and see if that helps get the look you're trying for. It will definitely change the look, and give both more depth of field AND if you stop down enough, a bit of softness. It also changes the way the colors come out. Contact me for photographic equipment or visit my home page at: http://macrocoins.com |
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Pillar of the Community
Canada
2784 Posts |
thanks ray I will do that. I like the enlarger lens. I have a couple of macros lens. I really like the enlarger lens I am going to try to learn this stacking as well ray. I hope you don't mind may seek some help from you an austrokiwi plus dave. I will let you know. when I will give it a shot is there any threads that explain this stacking. thank you all so much
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Pillar of the Community
Canada
2784 Posts |
thank you ray tried what you said. I am happy with the canon and the look of the coin. this is with the el nikkor 75mm again thank you. I have purchased adoble photoshop element 13. don't have a clue how to use it. but I will before long. want to learn how to stack and stitching.   |
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Pillar of the Community
Canada
2784 Posts |
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Pillar of the Community
Canada
2784 Posts |
the 24 mm Minolta reverse mounted is very hard to light for because. the lens is almost on the coin. the 50mm give you a lot more room. the 50mm works good also forward mounted. to check coins. the enlarger lens thou work best. I like that Minolta lens images are very close. to exactly what ones coin look like in your hands. ray helped me to understand thou how to get the same out of my enlarger lens. just have to keep trying different setups.
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Pillar of the Community
Canada
2784 Posts |
here 2 more photos canon attached to bellows with microscope objective plan 4   |
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Pillar of the Community
Canada
2784 Posts |
this is where the janjso lamps really come in handy for lighting.
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Pillar of the Community
United States
4038 Posts |
Very nice and sharp.
You can get a little more working distance from a Plan4, M5, or similar objectives by unmessing with the chrome end piece. It is just for looks. But don't lose it!
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Pillar of the Community
Canada
2784 Posts |
ray is there any larger microscope objectives. that would cover more of the coin surface when viewing. the objective gives a very sharp images. it would just be nice if it covered a larger area. do you know of any.
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Pillar of the Community
United States
4038 Posts |
rocky...I think you mean lower magnification objectives, which would cover more area. Indeed there are, but interestingly the range from 1:1 to 2:1 is very bleak in objective land. In the 3x range there are a few nice objectives to be had, for a range of prices. My favorite is the Nikon MM3X. It is about as sharp as you can get at 3x from any optic, and is telecentric as well so lends itself to excellent stacking performance. You can't push it up or down in magnification much without problems, so you must be resigned to 3x. This will give you about 60% bigger field of view vs the 5x objective, but they are around $400 on ebay. Another option is the Unitron 3x Measuring objective, which is not fully telecentric but is closer than most other 3x objectives. These will only run you around $50-60, if you can find them. The other option is to push a 1x objective up to 2-3X to get the FOV you want. A Rodenstock 75mm Apo Rodagon D M1:1 (75ARD1) fixed aperture version will cost you around $125, and can be easily pushed to 2x and even to 3x with enough extension. The quality won't be as good as an optimized 3X microscope objective, but is still pretty good. The last option is the best one, the Canon 35mm Macrophoto. It is the very highest quality lens available in the 2x-3x range, and has the interesting advantage of having RMS thread mount, so integrates well into a microscope objective based setup. They will run you $300-400 on ebay. They are not telecentric, so don't stack as well as the MM3X, but are very high resolution and perfectly flat field. Great for coin detail shots in the 2X-3X range. |
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Pillar of the Community
Canada
2784 Posts |
ray thank you so much. I want to go farther thank you. I appreciate all your help. ray I did it just got it all together telescentic focus. I used a Nikon 135mm mounted on the bellows. the camera on the end. I mounted a 105 enlarger lens. for this test on a second bellows. my mount was not solid enough. but I got it focused. but I did not dare click the mouse to take a picture. I have purchased a 300 mm enlarger lens its coming. when I got the nickel focused all I could see was the beaver head. the contours and shape was as it should be. ray love this stuff. I will build some thing stronger and get pictures have a great one
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Pillar of the Community
Canada
2784 Posts |
I purchased a lot of 6 lens. there is this little 50mm lens in there. this is and image of the d in Canada on a ten cent piece. see the doubling the dime is a 2003  |
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Posted 07/07/2015 7:40 pm
