Can I use this for live blood analysis? Also I would need to order along with it a 2.5 and 10X as well as 40/50X lens...what's included? Also I have a MAC computer will this be difficult to hook up to that? Can I use this for live blood analysis? Also I would need to order along with it a 2.5 and 10X as well as 40/50X lens...what's included? Also I have a MAC computer will this be difficult to... » Read More Can I use this for live blood analysis? Also I would need to order along with it a 2.5 and 10X as well as 40/50X lens...what's included? Also I have a MAC computer will this be difficult to hook up to that? « Show Less
67323
You can see the blood moving abound idk if you can annualize it. Instillation is simple and can be hooked up to almost every computer.
67324
I use mine for blood analysis, It is an amazing scope. I have hooked it up to my Daughters MAC and it works great. It comes with everything as far as lenses. You will need to order slides and dyes if you need them as well. If you have any more questions let me know
35625
We do not offer custom made lenses, we use only manufacturer supplied reading lenses in standard magnifications of +1.25, 1.50, 1.75, 2.00, 2.50, 2.75, 3.00, 3.50, and 4.00. Not all of these lens options are shown in Amazon's product catalog, but we have them. If you would like to mix and match different strengths in left and right lenses, we are happy to accommodate you. You would need to order a regular pair and then write to us through Amazon's messaging system to tell us how you want to customize them. Or you could order at our direct website (same as our seller name), select a standard lens choice, and then put your customization request in the "notes" section during checkout.
1073745
NO - they will try, after you buy this, to sell you additional software so you can use it on your Mac but no matter what you will not be able to EVER see the highest magnification on the computer --- please don't waste your money on this POS - I wish I hadn't !!!!
477811
This lens is very sharp - one of the best 43 lens you can purchase. Useful for portrait if you have room to backup. Remember it is equivalent to 120 mm in 35 mm. It can be useful for nature photography as a medium telephoto. Not typically useful for landscspe. The 12 to 40mm pro f2.8 lens meets your overall needs best. At 40mm it acts close to a macro. Unless you are working at high magnification you don't need the 60mm macro which I own and love. But the 12 to 40mm pro f2.8 zoom which I also own better meets your mentioned needs. BUY from Amazon used..like new. I did and got lens in box with warranty card. This lens is very sharp - one of the best 43 lens you can purchase. Useful for portrait if you have room to backup. Remember it is equivalent to 120 mm in 35 mm. It can be useful for nature photography as a medium telephoto. Not typically useful for landscspe. The 12 to 40mm pro f2.8 lens meets your overall needs best. At 40mm it acts close to a macro. Unless you are working at high magnification you don't need the 60mm macro which I own and love. But the 12 to 40mm pro f2.8 zoom which I also own better meets your mentioned needs. BUY from Amazon used..like new. I did and got lens in box... » Read More This lens is very sharp - one of the best 43 lens you can purchase. Useful for portrait if you have room to backup. Remember it is equivalent to 120 mm in 35 mm. It can be useful for nature photography as a medium telephoto. Not typically useful for landscspe. The 12 to 40mm pro f2.8 lens meets your overall needs best. At 40mm it acts close to a macro. Unless you are working at high magnification you don't need the 60mm macro which I own and love. But the 12 to 40mm pro f2.8 zoom which I also own better meets your mentioned needs. BUY from Amazon used..like new. I did and got lens in box with warranty card. « Show Less
2058086
I have the Pentax lens and absolutely love it. I do not have, nor have never used, the Tamron lens. However, Pentax forums has some very good reviews of it (http://www.pentaxforums.com/userreviews/tamron-70-200mm-f2-8-di-ld-macro.html). You might want to ensure that's the exact lens you are looking to buy.You lose one stop with the Pentax. Depending on the camera you have, that may be a big deal. I've found I can use the 60-250 with a TC in bright light without problems (it's a 5.6 lens when the TC is used with it) for action photography. I use mine for wildlife and sports photography (outdoor mainly) and it does everything I need. I have the Pentax lens and absolutely love it. I do not have, nor have never used, the Tamron lens. However, Pentax forums has some very good reviews of it (http://www.pentaxforums.com/userreviews/tamron-70-200mm-f2-8-di-ld-macro.html). You might want to ensure that's the exact lens you are looking to buy.You lose one stop with the Pentax. Depending on the camera you have, that may be a big deal. I've found I can use the 60-250 with a TC in bright light without problems (it's a 5.6 lens when the TC is used with it) for action photography. I use mine for wildlife and sports... » Read More I have the Pentax lens and absolutely love it. I do not have, nor have never used, the Tamron lens. However, Pentax forums has some very good reviews of it (http://www.pentaxforums.com/userreviews/tamron-70-200mm-f2-8-di-ld-macro.html). You might want to ensure that's the exact lens you are looking to buy.You lose one stop with the Pentax. Depending on the camera you have, that may be a big deal. I've found I can use the 60-250 with a TC in bright light without problems (it's a 5.6 lens when the TC is used with it) for action photography. I use mine for wildlife and sports photography (outdoor mainly) and it does everything I need. « Show Less
759249
My brother has loan his 50 1.4 to me. I like. I may get the 24-70 2.8 - we get so many positives about it. Use the 24-70 indoors and the 4f lens where there is good light??Thanks for your suggestions.
1787313
Just called and spoke with A&D; makers of the Life Source 853 and the rep said it is designed for Medium and Large cuffs only. That if I needed a Small cuff I would need a different blood pressure monitor. I was hoping it took a Small. Darn, looks like I'm purchasing a new blood pressure monitor that takes a small cuff.
403189
The smaller loupe is 10X. Don't think it would be suitable for one with Macular Degeneration if reading very much.
2156710
Hi there... I have this lens, and love it, for its total flexibility - it is a perfect traveller's lens. It is not exactly a "macro" lens, though I have used it with success to make some close-ups. If you then buy a close-up set (1+2+3), I am sure it can handle many of your macro needs - though you should bear in mind that that is not what it was designed for, nor is it a lens with low aperture readings - i.e. - it will be darker than your average macro lens.
848890
Ok, great info as usual! I'm not going to be taking many close up "macro" type shots or shots with focused forground objects w/ blurred backgrounds to start off, and I really like the 24-105 f/4 L IS lens, would that be probobly the best "walk around" lens for the XSi then? Also, can a 2.8 lens take landscape / scenic shots where the foreground and background are both in focus? I am confused about that with the f# & lenses.The night railroading shots I posted before are a main priority and I have seen some excellent night / low light posted images under the 24-105 f/4 L IS lens here on Amazon.I have a question on the 50D kit lens quality but I'll try to post that under the 50D discussions. Thanks again for all your input. Ok, great info as usual! I'm not going to be taking many close up "macro" type shots or shots with focused forground objects w/ blurred backgrounds to start off, and I really like the 24-105 f/4 L IS lens, would that be probobly the best "walk around" lens for the XSi then? Also, can a 2.8 lens take landscape / scenic shots where the foreground and background are both in focus? I am confused about that with the f# & lenses.The night railroading shots I posted before are a main priority and I have seen some excellent night / low light... » Read More Ok, great info as usual! I'm not going to be taking many close up "macro" type shots or shots with focused forground objects w/ blurred backgrounds to start off, and I really like the 24-105 f/4 L IS lens, would that be probobly the best "walk around" lens for the XSi then? Also, can a 2.8 lens take landscape / scenic shots where the foreground and background are both in focus? I am confused about that with the f# & lenses.The night railroading shots I posted before are a main priority and I have seen some excellent night / low light posted images under the 24-105 f/4 L IS lens here on Amazon.I have a question on the 50D kit lens quality but I'll try to post that under the 50D discussions. Thanks again for all your input. « Show Less
683417
I am just getting used to it. I just purchased a zoom lens because the one that comes with it does not magnify enough. This was a major upgrade for me; it is a very large unit and heavy. It has the lens size to give you great light gathering and I am hoping to get it out in the next couple of nights to do some more viewing and experimenting. Sorry I can't give you details on your specific question, as I have not been viewing when Mars is out.
892919
I love using this lens for Macro. In fact that is what I end up doing with it about most of the time as I rarely use it as the wide angle lens. After using it way more I found the the edges are always blurry with the wide angel lens. You can crop off the blurry parts. So just be sure to not center peopl/items all way to edge. As for macro pics. Love it to do so! Only downfall it has a narrow depth of field. But for the price can't beat it. I do have a set of 4 lens I like better. But this lens is not bad, and I do still use it want medium magnification. I say medium because when you extend the lens all the way out with this lens say on a kit lens to .55 you get some vignetting. Works best on mid range on lens. But for the money well worth it. Becuase if you are like me macro lens are out of the league at the time. Magnification is .45. Hope this helps. Let me know if I can help with anything else.
1495679
Hello Martha, The Lancets fit into the blood extraction tool, they are the sharp point that is replaced periodically for protection against infection. You will need a Blood Glucose meter, Test strips (disposable) and Lancets (sharp pointy end for drawing blood). I suggest looking at the cost of the test strips comparatively because some are more expensive than others and that is what you will continue to purchase. If you test 3 times a day (or more in the beginning) that can be $3 to $1.50 per day depending on the strips. I like the contour USB because is creates reports and is cheaper on test strips. GOD BLESS! Hello Martha, The Lancets fit into the blood extraction tool, they are the sharp point that is replaced periodically for protection against infection. You will need a Blood Glucose meter, Test strips (disposable) and Lancets (sharp pointy end for drawing blood). I suggest looking at the cost of the test strips comparatively because some are more expensive than others and that is what you will continue to purchase. If you test 3 times a day (or more in the beginning) that can be $3 to $1.50 per day depending on the strips. I like the contour USB because is creates reports and is cheaper on... » Read More Hello Martha, The Lancets fit into the blood extraction tool, they are the sharp point that is replaced periodically for protection against infection. You will need a Blood Glucose meter, Test strips (disposable) and Lancets (sharp pointy end for drawing blood). I suggest looking at the cost of the test strips comparatively because some are more expensive than others and that is what you will continue to purchase. If you test 3 times a day (or more in the beginning) that can be $3 to $1.50 per day depending on the strips. I like the contour USB because is creates reports and is cheaper on test strips. GOD BLESS! « Show Less
840152
Thank you guys, really appreciate you help. I was in confused state in selecting sigma 50-150mm f/2.8 or tamron 70-200mm f/2.8 macro, but after a week study i have selected this sigma 50-150mm which is exactly in my budget. Once again thank you guys.
1774788
I love the bokeh on this - however I very rarely use it - I use my 50-1.2 more and my 200mm - however it is a lovely lens that really I should pull out and use more often!!
382374
I have both lenses and they are both pretty good. I probably like the 50mm a bit more than the 35mm. The real question for you to answer is what will I be my primary use for the lens ? Remember, we're shooting with a crop-sensor camera, so the lenses convert from a 35mm to a 52mm, and the 50mm converts to a 75mm lens. My recommendation for General Purpose Shooting would be to go with the 50mm ! A great bang for the buck and terrific bokeh !
355350
Definitely used it through eyepro- take the time to fully focus for distance viewing beforehand to save time though. If you use prescription lenses/inserts it will work with you as well, again take the time to focus it both settings in a "stress free" environment.