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cnee
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Reged: 09/16/06
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Loc: California, USA
I love my new FMTR-SX 10x50! new
      #1512008 - 03/28/07 08:06 PM

Just receive it a few days ago from Eagle Optics. Same sharp-to-the-edge optical performance as the FMTR-SX 7x50 but with a much larger AFOV. Although the true FOV is somewhat smaller, but the larger AFOV combined with higher magnification give a much more expensive view than the 7x50, both day and night. Love it! There are trade off though, for one, precise eye placement with the 10x50 is much more critical than with the 7x50's huge exit pupil.

The 7x50 may soon be auctioned off...

Cheng-Lee


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Jitter
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Re: I love my new FMTR-SX 10x50! new [Re: cnee]
      #1512129 - 03/28/07 09:08 PM

Now we're talking !!! I've been looking at this same bino for casual night sky observing, and have heard very little about it on the negative side. I'm looking forward to you comments and experiences with it.

Jitter


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ngc6475
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Re: I love my new FMTR-SX 10x50! new [Re: Jitter]
      #1512305 - 03/28/07 10:48 PM

Congratulations! You have a fine binocular and I am looking forward to hearing more from you about it!

--------------------
Walter

"There are nights when the wolves are silent and only the moon howls."
-George Carlin



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ronharper
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Re: I love my new FMTR-SX 10x50! new [Re: ngc6475]
      #1513081 - 03/29/07 11:10 AM

Cheng-Lee,
You are about the third or fourth owner of that model on this forum. It is catching on slowly, despite its impressive optical quality, due to its rarity, expense, and the limitations of weight and individual focusing. I have one, and want no finer for sky viewing. Like you, I also have a 7x, but wouldn't part with it for daytime use because of its ease of view and finding, steadiness, and depth of field. But at night the 10x kills it. I think you're going to love it, but let us know your complaints as well as delights!
Ron


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cnee
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Re: I love my new FMTR-SX 10x50! new [Re: ronharper]
      #1514330 - 03/30/07 12:02 AM

Got chance today to do some observations with the 10x50 and 7x50 side by side.

Since Holger Merlitz has done very detailed and nicely written reviews on both the FMTR-SX 10x50 and 7x50 already I don't think I can do nearly as nice a job any way, so I am just going to say that, basically, I concur with Holger's findings regarding sharpness, stray light, ghost images, etc.

What I'd like to point out is the differences between the 7x50 and the 10x50 Polaris. In addition to the obvious differences mentioned in my first post of this thread, the 2 Polaris are actually fairly close in optical performances. So what follows are really nitpicking. I am pretty sure you won't notice most of these if you were concentrating on your subjects as you are supposed to. Besides, there's that thing called the individual sampling variance...

Day time off axis CA seems to be very slightly more pronounced on the 10x50, especially beyond 80% toward the edge. This could be observed as well when viewing the 3/4 moon toward the edges at night.

During day time, I did notice a bit stronger (very slight) stray light reflected around the edge of the field with the 10x50, and this is only under very specific conditions and I was intentionally looking for it. There's almost none on the 7x50. Neither showed any reflection during normal viewing circumstances.

Ghost images with 3/4 moon were simply not detected on either. However, when the 3/4 moon is just off the FOV, the 10x50 exhibits noticeably stronger stray light reflections which look like irregular light patches.

The slight pincushion distortion that were present on both versions, in my opinion, is slightly stronger on the 7x50.

My personal preference overall is toward the 10x50 both for day and night, mainly because I really prefer the wider angle view. I normally have no problem to hold 10x steady enough, even at this weight...

Hope this would help those trying to decide between these 2 really fine binoculars.

Cheng-Lee


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ronharper
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Re: I love my new FMTR-SX 10x50! new [Re: cnee]
      #1514830 - 03/30/07 10:32 AM

Cheng-Lee
That's a nice summary, and I hope EdZ puts it in the mini-review section. It is interesting to compare with my piece there comparing these binos. Your observations and mine differ on a few points, probably because the effects are small and the exact way we tested for, CA for example, may have been different. Otherwise, our differences are probably due to matters of opinion determined by the manner of use.

The wide AFOV in the 10x is really a pleasure, and it seems sharper at the edge than the 7x to me. But it is harder to see, because the eye must be rolled further, and as you have noted, if the eye pupil is near 5mm, the edge of the eye will cut off some of the light, resulting in darkening or kidney-beaning, unless you move the eyes a bit left to look right, etc., not worth the trouble unless the bino is mounted. So, in the end, despite the good edge correction, the wider field provides more of an emotional impact, and extra periferal target-finding room, than easily-gathered critical information.

While I didn't compare the two for leak-in of strong off-axis light in my review, I agree with you and Holger that in the 7x this is absent, but quite noticeable in the 10x if the full moon is used as the test, which is a hard test for sure. This probably hampers dawn/dusk terrestrial observing with the 10x more than anything else, when the sky is fairly bright and you're looking into the shadows. I don't think it affects normal skywatching.

I think all 10x50s are the newer "SX-2" model, and would be curious to know if you 7x is the original or the new. From Holger's photos, you can see that the 7x and 10x he reviewed were the old and new, respectively. I have not seen a mention of the new-style 7x, unless yours is one.

Let's be sure our neck straps are in good order and always deployed. You wouldn't want one of these things to land on your foot!
Ron


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edwincjones
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Re: I love my new FMTR-SX 10x50! [Re: ronharper]
      #1514854 - 03/30/07 10:40 AM

thank your for the interesting report

edj

--------------------






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cnee
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Re: I love my new FMTR-SX 10x50! new [Re: edwincjones]
      #1515926 - 03/30/07 08:35 PM

Ron, as you said, individual testing methods would definitely make a impact when the differences are so minor.

My 7x50 is a SX-2, has exactly the same appearance as the 10x50. What I read elsewhere is the new and old are optically the same. At least, in my case, Holger's review of the old 7x50 matches quite well with what I observed with the new 7x50.

Cheng-Lee


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ngc6475
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Re: I love my new FMTR-SX 10x50! new [Re: cnee]
      #1515953 - 03/30/07 08:52 PM

Thanks for expanding on your original post, Cheng-Lee. It is a very well written report! Have you tried splitting any close doubles with your Fujinons yet?

--------------------
Walter

"There are nights when the wolves are silent and only the moon howls."
-George Carlin



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ronharper
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Re: I love my new FMTR-SX 10x50! new [Re: ngc6475]
      #1516343 - 03/31/07 12:52 AM

Cheng-Lee,
There is one significant difference between the old and new, the coating. The SX in the model name refers to Fujinon's older best coating, and the -2 signifies an improvement. The old and new coatings look different, and the SX-2 is indeed better, showing the moon against a cleaner blacker background than the old. The old was advertised as 95% system transmission, and I don't think the new is advertised any differently, but Fujinon is extremely weak in the hype department.

Nitpicking the differences between the 7x and the 10x is great fun, but obscures an important fact. Both are arguably, optically, the best made.
Ron


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cnee
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Re: I love my new FMTR-SX 10x50! new [Re: ronharper]
      #1516430 - 03/31/07 03:20 AM

Walter, no I haven't turned to the doubles. I don't usually do that anyway.

I didn't know the coatings are different. Fujinon surely don't mention that. Anyway, for night sky viewing, I think the 10x50's only weakness is the stray light reflections on the moon. In comparison my Swaro 10x42 SLC doesn't show any at all. However, the Swaro is not sharp to the edge like the Fujinons, the stars start to show coma out to about 70% of the FOV.

Cheng-Lee


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hallelujah
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Re: I love my new FMTR-SX 10x50! new [Re: cnee]
      #1517297 - 03/31/07 05:20 PM

Ron,

In the Fujinon catalog that I have they are advertising electron beam coatings as permitting 99.9% light transmission.

--------------------
Nikon7x35GoldSentinel 9.3*(2)+Pentax8x40PCFWPII+MinoxBD10x44BP+FujinonFMTRSX7x50
Nikon10x50GoldSentinel+Pentax12x50 5.5*Japan+Pentax12x50PCFWPII+Vixen8x56Geoma
Fujinon12x60HB+Pentax16x60PCFWP+Pentax20x60PCFWP+Pentax20x60PCFWPII
Tento20x60USSR+Orion12x63MiniGiant+Spectrum I 20x65+Orion15x70LittleGiant II
Orion20x70LittleGiant II+Orion16x80Giant+Orion30x80MEGAView+Barska30x80X-Trail
BurgessOptical20x90SeriesII

Edited by hallelujah (04/01/07 05:02 PM)


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Mark9473
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Re: I love my new FMTR-SX 10x50! new [Re: hallelujah]
      #1517310 - 03/31/07 05:25 PM

but that would be on a single surface, right?

--------------------
Mark
Leica 8x20; Nikon 7x35; Vixen 8x42; Orion 15x63; Docter 15x60
WO Megrez II 80 FD / APM 107mm f/6.5 / Mewlon 210 on DM-6 + Berlebach Planet


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EdZ
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Re: I love my new FMTR-SX 10x50! new [Re: Mark9473]
      #1517324 - 03/31/07 05:35 PM

That would probably be all fully multicoated surfaces.

Electron beam coating is simply another form of applying the coatings. Electron beam deposition. You might be able to read about it on Edmunds technical site. Follow links thru web links.

edz

--------------------
Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21


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hallelujah
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Re: I love my new FMTR-SX 10x50! new [Re: EdZ]
      #1517446 - 03/31/07 06:49 PM

Mark9473,

99.9% per surface and better than 93% peak of light transmission. That information is from a catalog I received last year, however, the date on it is December 1998.

--------------------
Nikon7x35GoldSentinel 9.3*(2)+Pentax8x40PCFWPII+MinoxBD10x44BP+FujinonFMTRSX7x50
Nikon10x50GoldSentinel+Pentax12x50 5.5*Japan+Pentax12x50PCFWPII+Vixen8x56Geoma
Fujinon12x60HB+Pentax16x60PCFWP+Pentax20x60PCFWP+Pentax20x60PCFWPII
Tento20x60USSR+Orion12x63MiniGiant+Spectrum I 20x65+Orion15x70LittleGiant II
Orion20x70LittleGiant II+Orion16x80Giant+Orion30x80MEGAView+Barska30x80X-Trail
BurgessOptical20x90SeriesII

Edited by hallelujah (04/01/07 05:04 PM)


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