The Spectacles Thread.

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Seannie

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no it is not true. the best optical quality still belongs to the glass lenses.

hmmm if we just compare between plastic lenses, 1.67 with 1.74 is it still true that the higher the index the sharper the vision will be as well, in addition to being thinner? I noticed a subtle diff when i compare 1.67 with 1.74. Is it becos light travels faster in 1.74 & reaches our eyes faster thats why the images become sharper??
 

Seannie

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http://www.ehow.com/about_5933289_problems-high-density-eyeglass-lenses.html

higher index means lower clarity...

and that would depends on the technology or coating or the brand to increase the clarity

oh, so it means that a 1.67 lens with double-aspheric surface with good coating will be clearer than a 1.74 normal lenses, but the only disadvantage is in the thickness for people with high presciption like mine. SO 1.67 or 1.74 for me??? In the report it mentioned that 1.74 is not only thinner but also lighter, so it will feel more comfy?
 

Seannie

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hoya NULUX Aspheric 1.7 EYRY - abbe 36 density 1.41
hoya NULUX Aspheric 1.74 EYVIA - abbe 31 density 1.47
hoya NULUX Aspheric 1.67 - abbe 36 density 1.37
nikon Lite 1.67 - abbe 32 density 1.35
nikon Lite 1.74 - abbe 33 density 1.46
Essilor Crizal 1.67 - abbe 32
Essilor Crizal 1.74 - abbe 33
Zeiss Claret 1.67 - abbe 32 density 1.36
Zeiss Claret 1.74 - abbe 33 density 1.47
Seiko SuperSV 1.67 - abbe 32 density 1.36
Seiko MX 1.74 - abbe 33 density 1.47

Abbe - higher the better. affects clarity
density - lower normally means lighter

this loks good >>
hoya NULUX Aspheric 1.7 EYRY - abbe 36 density 1.41
now that u mentioned it, i remembered i used to wear hoya 1.7 lens many years ago & it sure looks v clear! I have not tried hoya 1.74 before so i cant compare, but compared to hoya 1.67 it isnt as clear as its 1.7 lens. Is it my own imagination?
 

Seannie

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doesnt help... i have sold many pairs... because couldnt get use to them... because of whatever reason for each pair... i usually take 1 week to try... if cant adapt... means too bad... those that i can wear are those i adapt within 2days...

Hey bro, me too!!! Usually if within a week its not good means i cannot wear them anymore, if its good immediately i know it!
 

Seannie

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if its you,,, which one will u choose?

http://imgur.com/a/qVcM7/

not sure whether u have bought alry or not, but advice for u if you are considering hamamoto:-
The lens portion is not very stable so if you encounter strong winds, it will "flap" in the wind & make you giddy becos the lens move with the frame. I have a previous pair before so i experienced such movement.
 

Seannie

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Eye champ is having 50% sales but I suspect that they have mark up a bit n then give a massive discount of half the retail price when norm is about 20%..

Saw quite a couple of brands I like ray ban, Tom ford, Dior and Porsche design just to name a few...

Luckily starck is not under the promo brands. Else heart pain since I recently bought a pair there! Lol

How is Starck's fitting & comfort? Is it good??
 

tildveryn

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this loks good >>
hoya NULUX Aspheric 1.7 EYRY - abbe 36 density 1.41
now that u mentioned it, i remembered i used to wear hoya 1.7 lens many years ago & it sure looks v clear! I have not tried hoya 1.74 before so i cant compare, but compared to hoya 1.67 it isnt as clear as its 1.7 lens. Is it my own imagination?

its not your imagination...
above facts state it clearly...
and higher the abbe is better in terms of clarity... especially its the same brand... different brand uses different coating so that would affect clarity also. For Hoya, just do a search... 1.7 is more recommended than 1.67 and 1.74 by those optometrist who posted online.

But according to all the shops... 20 over shops i went to... Hoya is classed below Zeiss and Nikon... but quality is still great...
funny thing is that... Now seem that Zeiss price have dropped alot... and Nikon too... cheaper than Hoya 1.74 and 1.7
 

tildveryn

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not sure whether u have bought alry or not, but advice for u if you are considering hamamoto:-
The lens portion is not very stable so if you encounter strong winds, it will "flap" in the wind & make you giddy becos the lens move with the frame. I have a previous pair before so i experienced such movement.

Thanks! great feedback...

Those are frames i short listed... havnt buy yet.

Ok... i'm going to avoid hamamoto :)
 

tildveryn

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this loks good >>
hoya NULUX Aspheric 1.7 EYRY - abbe 36 density 1.41
now that u mentioned it, i remembered i used to wear hoya 1.7 lens many years ago & it sure looks v clear! I have not tried hoya 1.74 before so i cant compare, but compared to hoya 1.67 it isnt as clear as its 1.7 lens. Is it my own imagination?

Also note that your Hoya 1.67 abbe value may not be 36. because only the asperical version is 36. others are not. 1.7 all versions are abbe 36. So that's why it's the most recommended among Hoya hi index products when comparing 1.67, 1.7 and 1.74.
 

Seannie

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yah... for those who did my specs... i have told them my problem... but still couldnt pinpoint the issue....

so for the past 8 years i have made 6 pairs of specs... most expensive one is $800 with lens. cheapest is $400+. Out of the 6 pairs, only 2 can be worn... and the 2 I managed to adapt within 2days. The other 4 pairs, wear 1 week also cannot adapt.

judging fm your records, if you need to change ur specs every 1.5yrs, why do u still nid to take exp lens like hoya? unbranded lens will do alry, since their coating lasts ard that amt of time.
 

tildveryn

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judging fm your records, if you need to change ur specs every 1.5yrs, why do u still nid to take exp lens like hoya? unbranded lens will do alry, since their coating lasts ard that amt of time.

no... 2 pairs i wore for around 6 to 7 years... other 4 pairs only less than 2 weeks... I changed because they just dont fit
 

2pm2am

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its near the screw area & i checked with another optical shop & my fren who works in this industry. Both said it is due to mishandling or careless like wad you have said. They said it doesnt look like its discoloring of the frame as it will look different. My frame is Oakley so i supposed it couldnt have been due to poor quality frame????

The paint area being scratched off is about 1mm in length, i supposed not tat bad??

if i ask them to change the frame, wouldnt it seems to be a bit too picky? Cos i dont hope to leave such impression with the shop people lest in future i return to buy fm them again it spoils our relationship.

You mean you accept frames that have paint peeled off? If there is a fine scratch on the lens, will you accept it? If the lens degree is 0.25 off actual power, will you accept it? If the spec you buy is a cheap one, maybe can accept, but oakley leh, expensive one.
they are not the only optical shop in singapore you know. unless you die die must buy from them next time.
 

Seannie

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You mean you accept frames that have paint peeled off? If there is a fine scratch on the lens, will you accept it? If the lens degree is 0.25 off actual power, will you accept it? If the spec you buy is a cheap one, maybe can accept, but oakley leh, expensive one.
they are not the only optical shop in singapore you know. unless you die die must buy from them next time.

actually i felt a thorn in my heart for those scratches on the frames, but so far, i dont experience scratches on the lenses from this optical shop & their lenses have always been very clear, although i have experienced lens scratches from other optical shops, usually i will not patronise back for lens scatches as i find it unacceptable. For paint peeled off, i seldom encounter such cases, only for this recent pair. Maybe the person doing the job is not the careful type, but this optical shop has the full range of Oakley frames which i want. Other shops usually dont carry the full range & if they do, it would usually be those big stores but charge very expensive lenses as they only carry branded lenses & not the cheap ones that i need.

My RX is very high, as such i dont find paying $1k for 1.74 branded lens is justifiable. Most likely, the frame already worn out before the lenses do! Normally i dont wear my specs for more than a year.

25 degrees off actually cant really make much diff to me & i cant really tell it as my power too high. But if the diff mre than 50 then maybe i can tell the diff. But i think the axis makes much diff to me cos my astig is very high as well. I experienced optical shops that gave me lenses that are unequal vision in the left & right lenses so i suppose they had made an error in the axis.
 

Seannie

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Actually the main problem i face with specs is that i often dont feel comfortable wearing in them, no matter how the optician adjust it will still not feel right. I suppose my head & nose structure is not symmetrical and the specs tendency to always slip down becos of my oily face as well. Even with oakley or tagheuer frames, they still slip forward & down, so it has been posing a lot of problems to me.
 

Seannie

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what's your criteria for a good/reliable optometrist?

A good reliable optician will be honest, give you the lens that they said, make sure lens is the correct prescription as stated, do a good careful job & will not hand you a sub-standard product.

Optometrists job just to test the eyes, so i dont have much criteria on them, as long as they dont make a huge error in the prescription.

Often the problems lie more in the optician/worker/lab technician.
 
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