Difference Between 21mm HD and DA Non HD

Stagnant · 05-12-2015, 05:03 AM

I am not trying to overstate the effect of coatings on sharpness of the given lens. Actually we do not know the exact modifications made to the original design of SMC DA 21 Lim. So the "HD" version might have some other differences as well, other than the coatings and rounded blades.

noelpolar · 05-12-2015, 11:03 PM

Originally posted by Stagnant

I am not trying to overstate the effect of coatings on sharpness of the given lens. Actually we do not know the exact modifications made to the original design of SMC DA 21 Lim. So the "HD" version might have some other differences as well, other than the coatings and rounded blades.

Quite possible......

It's not uncommon with any manufactured goods that some changes may be incorporated into the product that the consumer will not be made aware off. These could be incorporated into the product for a myriad of reasons ......with both intended and unintended consequences.

As far as the 21 goes, there seems to be avid "Star Burst" fans...... nothing wrong with that.....plenty of 2nd hand 21 and 15's around if that rocks your boat. It will be much the same when the FA Limiteds are updated I reckon (not referring to starbursts....but other stuff people are passionate about).

I must admit I will occasionally add a starburst.... generally with the Topaz plug in.

tabl10s · 05-14-2015, 07:55 AM

Originally posted by Fat Albert

HD has 5 reviews.

SMC has 79 reviews.

The fact that the HD has better reviews doesn't really mean anything at this point.

The fact that the SMC has more reviews doesn't mean much. A 1972 VW Bug, will have more reviews than the 2016 version when it arrives, but it won't be better.

Fat Albert · 05-14-2015, 08:09 AM

Comparing n=5 to n=79 is completely inaccurate, and any statistician will say so. The actual ratings are irrelevant--the number of reviews is critical to the validity of said reviews.

Driline · 05-14-2015, 11:29 AM

Originally posted by tabl10s

A 1972 VW Bug, will have more reviews than the 2016 version when it arrives, but it won't be better.

I dunno bout that. The newer VW bugs reliability has been downright dismal. I'll take the 72'

tabl10s · 05-14-2015, 01:09 PM

Originally posted by Driline

I dunno bout that. The newer VW bugs reliability has been downright dismal. I'll take the 72'

Rode from Sacramento to Anaheim at 60hp in non-reclining bucket seats for 8+hours. Gimme new every time.

---------- Post added 05-14-15 at 13:11 ----------

[quote=Fat Albert;3253130]Comparing n=5 to n=79 is completely inaccurate, and any statistician will say so. The actual ratings are irrelevant--the number of reviews is critical to the validity of said reviews.[/qu

It'll take time as many want all their pics to have the same special effect/look.

noelpolar · 05-15-2015, 05:12 PM

Originally posted by Driline

I dunno bout that. The newer VW bugs reliability has been downright dismal. I'll take the 72'

You'll have trouble getting star bursts from the early bugs.....only 6 volts....72 you might though....

05-12-2015, 11:03 PM	#17
noelpolar Veteran Member Join Date: Oct 2013 Location: Goolwa, SA Photos: Gallery Posts: 4,310	Originally posted by Stagnant I am not trying to overstate the effect of coatings on sharpness of the given lens. Actually we do not know the exact modifications made to the original design of SMC DA 21 Lim. So the "HD" version might have some other differences as well, other than the coatings and rounded blades. Quite possible...... It's not uncommon with any manufactured goods that some changes may be incorporated into the product that the consumer will not be made aware off. These could be incorporated into the product for a myriad of reasons ......with both intended and unintended consequences. As far as the 21 goes, there seems to be avid "Star Burst" fans...... nothing wrong with that.....plenty of 2nd hand 21 and 15's around if that rocks your boat. It will be much the same when the FA Limiteds are updated I reckon (not referring to starbursts....but other stuff people are passionate about). I must admit I will occasionally add a starburst.... generally with the Topaz plug in. Last edited by noelpolar; 05-12-2015 at 11:14 PM.

05-14-2015, 01:09 PM	#21
tabl10s Veteran Member Join Date: Jun 2011 Location: Sacramento(formerly from B'Ham, England). Posts: 1,424	Originally posted by Driline I dunno bout that. The newer VW bugs reliability has been downright dismal. I'll take the 72' Rode from Sacramento to Anaheim at 60hp in non-reclining bucket seats for 8+hours. Gimme new every time. ---------- Post added 05-14-15 at 13:11 ---------- [quote=Fat Albert;3253130]Comparing n=5 to n=79 is completely inaccurate, and any statistician will say so. The actual ratings are irrelevant--the number of reviews is critical to the validity of said reviews.[/qu It'll take time as many want all their pics to have the same special effect/look. Last edited by tabl10s; 05-14-2015 at 01:14 PM.

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05-12-2015, 05:03 AM	#16
Stagnant Veteran Member Join Date: Dec 2013 Photos: Gallery Posts: 603	I am not trying to overstate the effect of coatings on sharpness of the given lens. Actually we do not know the exact modifications made to the original design of SMC DA 21 Lim. So the "HD" version might have some other differences as well, other than the coatings and rounded blades.

05-14-2015, 07:55 AM	#18
tabl10s Veteran Member Join Date: Jun 2011 Location: Sacramento(formerly from B'Ham, England). Posts: 1,424	Originally posted by Fat Albert HD has 5 reviews. SMC has 79 reviews. The fact that the HD has better reviews doesn't really mean anything at this point. The fact that the SMC has more reviews doesn't mean much. A 1972 VW Bug, will have more reviews than the 2016 version when it arrives, but it won't be better.

05-14-2015, 08:09 AM	#19
Fat Albert Veteran Member Join Date: Jul 2013 Posts: 966	Comparing n=5 to n=79 is completely inaccurate, and any statistician will say so. The actual ratings are irrelevant--the number of reviews is critical to the validity of said reviews.

05-14-2015, 11:29 AM	#20
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,695	Originally posted by tabl10s A 1972 VW Bug, will have more reviews than the 2016 version when it arrives, but it won't be better. I dunno bout that. The newer VW bugs reliability has been downright dismal. I'll take the 72'

05-15-2015, 05:12 PM	#22
noelpolar Veteran Member Join Date: Oct 2013 Location: Goolwa, SA Photos: Gallery Posts: 4,310	Originally posted by Driline I dunno bout that. The newer VW bugs reliability has been downright dismal. I'll take the 72' You'll have trouble getting star bursts from the early bugs.....only 6 volts....72 you might though....

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