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Canon T1i & Bellows GSA Dollars

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 Posted 08/26/2012  5:54 pm  Show Profile   Bookmark this reply Add rmpsrpms to your friends list Get a Link to this Reply
Sorry, I think that's too big for uploading on the forum. It's a fine size for photobucket but hard to get the file size where you need it. I think you will just need to downsize more and shoot for a smaller size, maybe 600x600 max, not sure since I only use photobucket.
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Ham1947's Avatar
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 Posted 08/26/2012  8:25 pm  Show Profile   Bookmark this reply Add Ham1947 to your friends list Get a Link to this Reply
Thanks Ray. Next time I'll give it a try.
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Ham1947's Avatar
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 Posted 08/27/2012  6:20 pm  Show Profile   Bookmark this reply Add Ham1947 to your friends list Get a Link to this Reply
I've run into a problem. I have switched to my Spiratone Bellows with the Macrotel 150mm lens on a tripod. I am trying to shoot a total image of a GSA dollar. I can only get half the plastic holder to view at a distance of 36 1/2 inches from the lens to the coin. At that distance focus becomes a real challenge. Am I doing something wrong? Maybe I need a different lens? Any suggestions. I have included an example.

Canon-T1i-&-Bellows-GSA-Dollars
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 Posted 08/27/2012  10:05 pm  Show Profile   Bookmark this reply Add rmpsrpms to your friends list Get a Link to this Reply
Ham...the issue is not clear. Are you saying you can't get any closer than 36", or can't get any farther than 36"? From you pic I assume you can't get far enough away from the coin to get a full-holder shot, correct? With the 150mm MacroTel, you should be able to focus to infinity on your bellows, so focusing at distance should not be a problem. Please explain what is limiting you. Nice coin and nice picture BTW...Ray

Re-read your post and now I assume you can't get the whole holder in the shot. Likely you will just need to move farther away and shorten the bellows to focus. Once you are that far out from the subject, it's best to use bellows length to focus. You are outside of "Macro" territory and into the range of normal photography. Depth of field is not a problem at these magnifications so adjust aperture for best performance from the lens, probably one or max two stops from wide open.

Hope this helps...Ray
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Edited by rmpsrpms
08/27/2012 10:09 pm
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Ham1947's Avatar
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 Posted 08/28/2012  10:07 am  Show Profile   Bookmark this reply Add Ham1947 to your friends list Get a Link to this Reply
Ray, sorry for the confusion. I have continued to move the tripod higher, and finally was able to get a satisfactory image of the GSA holder (about 95%). The distance from the lens to the holder is 45 inches. It is a real challenge to get the image focused, as the setup is very sensitive. Could you suggest a different lens to shorten the distance from the lens to the coin, or some other work around. I can make this work, just looking for something better. Thanks. Photo example below.

Canon-T1i-&-Bellows-GSA-Dollars.
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CaptainFwiffo's Avatar
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 Posted 08/28/2012  12:05 pm  Show Profile   Bookmark this reply Add CaptainFwiffo to your friends list Get a Link to this Reply
You could also take more than one picture and merge them together like a panorama.
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 Posted 08/28/2012  3:36 pm  Show Profile   Bookmark this reply Add rmpsrpms to your friends list Get a Link to this Reply
Ham...are you shooting rotated 90-deg or in vertical orientation and cropping? The Captain makes a good suggestion as well since there are good merging programs out there. If you want to have less working distance, a 105mm EL-Nikkor might work well. Figure everything scales linearly, ie if your working distance is 45 inches for a 150mm lens, it will be 30 inches for a 100mm lens...Ray
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Ham1947's Avatar
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 Posted 08/28/2012  4:17 pm  Show Profile   Bookmark this reply Add Ham1947 to your friends list Get a Link to this Reply
Ray,
I switched bellows to my Vivitar and attached the 155mm lens. The Vivitar seems to move easier and lock into focus better. I also changed the orientation to horizontal, rotated 90 degrees, and cropped. Cannot believe I didn't think of that! Thanks again for the help Captain and Ray. Image below.


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 Posted 08/28/2012  10:04 pm  Show Profile   Bookmark this reply Add rmpsrpms to your friends list Get a Link to this Reply
Super nice Ham!
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aladinslamp's Avatar
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 Posted 08/28/2012  11:55 pm  Show Profile   Bookmark this reply Add aladinslamp to your friends list Get a Link to this Reply
Nice you got all of it this time...were you using the bellows?...I find full shots with holder are better with just the camera and lens / macro lens, not an enlarging lens, on a bellows: which is to specific in its application needs...and needs some distance between the camera and the lens, hence the greater magnification abillity when used with bellows and extention tube rings..
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Ham1947's Avatar
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 Posted 08/29/2012  09:31 am  Show Profile   Bookmark this reply Add Ham1947 to your friends list Get a Link to this Reply
Aladinslamp,
Yes, I did use the bellows. For this size holder (3 1/2" X 5 1/2" ), what macro lens would you recommend? I have a Canon T1i. Thanks for you input.
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 Posted 08/29/2012  09:57 am  Show Profile   Bookmark this reply Add Ham1947 to your friends list Get a Link to this Reply
It appears that I have reached some sort of ending here. By that I mean I have shot all the GSA dollars I have (full obverse slab shot, full obverse and full reverse shots). I need to return to a PP program and get each image to look like the coin in hand. I owe a big thanks to Captain for his explanations of things and suggestions for improvement. And finally to Ray, who provided me with his microscope setup, and technical knowledge to get to the level where we all are very satisfied with my results. As we all know, we are never completely done, so I will from time to time be asking for your advice and comments on my progress. Finally, thanks to everyone who contributed to this board. I enjoyed reading the many posts, and learned so much.
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 Posted 08/30/2012  04:55 am  Show Profile   Bookmark this reply Add aladinslamp to your friends list Get a Link to this Reply
Ham one has to realize the lens is specific to its application. Just as normal camera lenses such as the 28mm is mostly used for landscape applications and the 90 or 135MM are portrait lenses for the normal user,, coins delve into a deeper region...full shots of the slab and coin don't work well with enlarging type lenses, they can at best get most of the slab but never all of it, and they need such greater hight of a copy stand to achieve it, well over 30 inches...Most copy stands are 28-30 inches and below...many are 24 or so.. here is my cheap canon 35-80mm standard lens
pic for a full shot, though I could have used my 18-55mm and such..

Canon-T1i-&-Bellows-GSA-Dollarsnow I switched to another camera lens, non enlarging, a cheap polish AMAR/S 4.5 105mm
lens, sharp lens for such a cheap price..photo taken at 18 inches..using the bellows with this lens...

Canon-T1i-&-Bellows-GSA-Dollars now this shot is with the bellows fully colapsed, and the next photo is with the bellows extended to get me a more close up of macro with the same lens, now at about 9 inches...

Canon-T1i-&-Bellows-GSA-Dollars
Now I have switched to a "EL CHEAPO" Rodenstock Omegaron 50mm at about 2 inches....at full frame Canon T1i 15MP
the 9 is all of the 1879 I can get into the view screen.
Now all of these photos, have ONLY been resized, no lighting or sharpening has been done, although they really
need it..time I have is only to show, that the application of the type of lens and the picture your getting.. are the result of the type of lens you are using, and its peramiters..Each of these lenses has its own focal distances, which is a learning curve...but the result is, the perspective of what you are trying to capture....Full holder/slab shots, or extreme close ups...Its still fun to explore and learn how to use the lenses you happen to have G
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 Posted 08/30/2012  04:59 am  Show Profile   Bookmark this reply Add aladinslamp to your friends list Get a Link to this Reply


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 Posted 08/30/2012  09:32 am  Show Profile   Bookmark this reply Add Ham1947 to your friends list Get a Link to this Reply
Thanks aladinslamp. Your information gives me more options to consider. I am trying to photograph (3) examples of my GSA's to start with. The full slab obverse, full obverse & reverse, and a few closeups of "overdates" similar to your 50mm shot of the 9.
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