John Hoare
seantoir
Reged: 04/25/04
Posts: 9115
Loc: Area 14, Kildare, Ireland
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Here's my problem: the lightweights have 13mm eye relief and the standards have 18mm. I wear eyeglasses, but the lightweights would definitely be more comfortable for occasional handheld use in addition to on a tripod.
Any thoughts on eye relief vs. using binoculars with eyeglasses?
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John
Watery Glebe
Puddlestown
Co. Kildare
Traditionally qualified Scealaí.
IFAS
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btschumy
Think Astronomy
Reged: 04/13/04
Posts: 1113
Loc: Austin, TX, USA
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I find it an immense pain to have to pull my glasses on and off when using binoculars with short eye relief. That annoyance would far outweigh the annoyance of added weight. For me it would be no contest and I would go with the standards.
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Bill Tschumy
Where is M13? Freeware -- Add a new dimension to your observing.
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jack savard
sage
Reged: 05/26/04
Posts: 478
Loc: quebec canada
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I have the same problem and also big astigmatism
somebody on the forum seges to me to use contact lens
AND IT IS great
it is 10 years I do not use my old contact lens but for bino
sorry it look like the only very good solution
extradinary good
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nobody made it I AM INTEREST
46,49 N 71,14 O Québec canada 2\L100 2\D100 0\S100
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John Hoare
seantoir
Reged: 04/25/04
Posts: 9115
Loc: Area 14, Kildare, Ireland
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Merci Jacque. Je n'ai pas l'astigmatisme sévère, mais je trouve les lentilles de contact qui irritent.
I think I will have to go with the Standard and keep my eyeglasses. First I will buy a monopod, which I have been meaning to do for my camera anyway, and use my present binoculars to determine how easy it would be to use with a set.
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John
Watery Glebe
Puddlestown
Co. Kildare
Traditionally qualified Scealaí.
IFAS
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Garfield
sage
Reged: 02/02/04
Posts: 210
Loc: South-Western ON Canada
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I don't wear glasses, but I've tried both the 20x80 Standards and 20x80LW's and prefer the longer eye relief of the standards. I have my Standards mounted on a Manfrotto 075 (forerunner to the 475) with geared head and find that the extra ER really helps when viewing objects towards the zenith. I surmise that it wouldn't be as much of an issue with a parallelogram mount though.
FWIW
Gary Irwin
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AT66ED
Pentax Papilio 6.5x21 ●
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BluewaterObserva
Post Laureate
Reged: 05/18/04
Posts: 4763
Loc: Zuni Mtns, NM
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Hand holding at 20x will quickly be found to not be an option, go for the standards.
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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12792
Loc: Cumberland, R I , USA42N71.4W
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At the weight of these binocs, neither can be considered hand holdable, (in my opinion for even brief periods).
The biggest difference I think in these two models would be the longer focal length of the Standards. Better edge correction, lower CA. And much better eye relief and a right diopter adjustment that has plenty of room for adjustment.
edz
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Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21
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jack savard
sage
Reged: 05/26/04
Posts: 478
Loc: quebec canada
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at long terme I untherstand it is irritate but it is realy better
I try to fix this problem by bying a sprare part objective and made my seft bino whit and old glass in the path of the light I keep you advise about that
BUT the last thing I try is in an other post here
I try to put my 2X barlow and a 40mm in piggy back on my tasco 20X50 and it wirk but here the sky is cloudly I cannot ai if it ork at night
try it may be it a new way to use bino
Ps  it is a bit crazy but it work
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nobody made it I AM INTEREST
46,49 N 71,14 O Québec canada 2\L100 2\D100 0\S100
Edited by jack savard (06/22/04 09:26 AM)
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KennyJ
Reged: 04/27/03
Posts: 10452
Loc: Lancashire UK
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Jack,
I too have tried these "crazy" ways of boosting magnification through binoculars.
Yes , it CAN work , but eye -placement and lens placement is VERY critical , and the end results , to me at any rate, serve only to prove the fact for HIGH magnifications , one needs LARGE objectives , not to mention VERY sturdy mounts and exceptional collimation.
I have concluded that for anything other than pure curiosity
factor , any ratio exceeding a magnification / objective diameter ( in mms ) of about 1:2 is unlikely to provide a satisfying image.
In other words , 20 x 40 , 25 x 50 , 30 x 60 or 40 x 80 binoculars are very unlikely to ever become popular options for the serious binocular user.
Clear skies , Kenny.
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If everyone is thinking the same thing , no-one is thinking - General George S.Patton
Zeiss 7 x 42 BGAT
Captain's Helmsman 7 x 50
Nikon 10 x 42 Superior E
Swift Audubon Kestrel 10 x 50
Helios 15 x 70 Observation
Strathspey 20 x 90
Televue 76 APO
Zeiss 85 Diascope
Helios 102 f5 refractor
Various eyepieces barlows tripods mounts etc.
Panasonic Lumix DMC - TZ5 digital camera
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jack savard
sage
Reged: 05/26/04
Posts: 478
Loc: quebec canada
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ok my last test was made whit a very special balow and is much easyer
the balow is in fact a gadjet for old vhs portable vcr frm radio schack it is a wide angle or telephoto adadtor;a barlow of 30mm that you can flip reverce;it is very short about 1.5 inch
normaly you just stick it in from of your zomm camera whit a screw and you can flic wide angle or telephoto
when I place it on my bino it is easy to aline it because it is larger then the rubber of yespice
and the 40mm just stic in back
my problem now is on what forum it is the best place to ask to ecerybody if some have see this and sale it
radio schack do no sale it now
theis kind of adadtor make very good barlow
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nobody made it I AM INTEREST
46,49 N 71,14 O Québec canada 2\L100 2\D100 0\S100
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