Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-29-2021, 06:46 AM   #31
Pentaxian




Join Date: Mar 2021
Photos: Gallery
Posts: 999
Original Poster
QuoteOriginally posted by JPT Quote
I don't think 150 euros difference is enough to be rushed into making a decision before seeing a more detailed comparison.
Agree - I dont tend to buy/sell lenses that often, and 150 Euros is a function of time that the lens is going to be used. I fear that whenever I see a bad flare or a not-so-pleasant bokeh, I'll prolly be cursing myself for not going to the HD instead.


QuoteOriginally posted by JPT Quote
The 43mm is the one that stands to gain the most from the upgrade because it was the oldest and didn't have the rounded aperture blades.
This is a bit of a double edged sword - I do like the sun-stars that the smc has and AFAIK, this is likely to be culled in the HD, well one cant have both - Good Bokeh + Sun star + Ltd .


The smc is going back. Thanks everyone for helping me decide

04-29-2021, 09:44 AM   #32
Veteran Member
jct us101's Avatar

Join Date: Jun 2008
Location: Rohnert Park, CA
Posts: 3,793
The original limiteds have a really terrible purple fringing problem since they were made for film cameras - my 77ltd was more purple than you could imagine when shooting with the bright sky was involved. Sure it's easy to remove, but it's annoying to need to. Not sure how bad the 43mm is in this regard though.
04-29-2021, 10:26 AM   #33
Pentaxian
Kozlok's Avatar

Join Date: Jun 2012
Location: Albuquerque
Photos: Gallery
Posts: 3,148
Don't get me wrong, I have stitched with the 43 a few times. I've just not always found it successful. Here's one I shot at f2 and managed to pull off. I had no tripod, so had to do it hand-held. There is a wider version on my hard drive, but I didn't like it as well. This is about 3 shots wide.

04-29-2021, 03:26 PM   #34
Site Supporter
Site Supporter




Join Date: Dec 2016
Location: Southeastern Michigan
Posts: 4,547
QuoteOriginally posted by RICHARD L. Quote
Tests comparing HD vs non-HD Limited lenses appear somewhere on this Forum (done by M. Bernard Déry, an optical engineer from here in Canada, if I'm right). Most lenses had very similar rendering, not sufficiently different to trash the older SMC coated optics, in my view. Personally, I used the original version of the DA 55-300 mm f/4-5.8 on a K5 with good results but it proved not up to snuff on a K3. Eventually I purchased a used HD DA 55-300 mm f/4-5.8 ED WR on eBay from Japan to replace my defunct FA 80-320 mm zoom and I was astounded at the difference of rendering between the two 55-300 mm DA zooms. The new HD version has strong contrast, enhanced resolution and produces excellent pictures on the K3, one would say it is a totally different design, so much so the performance is superior.

Regards
I had the exact same experience. I replaced my original DA 55-300mm due to the filter threads having been damaged by an accidental bump, and also wanted WR. I was very surprised how much better the WR version was with the HD coatings.

I did see a thread a while back showing comparisons between scenes taken with certain DA Limiteds in the original and HD versions, which showed better contrast in some scenes. Kind of reminded me of using a good haze filter. The protective coating for easier cleaning is also a practical consideration, but these differences are not usually meaningful enough to spend the money giving up a perfectly good lens to get the HD version. The DA 55-300mm might be an exception. I gave away my original version along with my K-r to friends who are unlikely to ever put a filter on it anyway, and I am glad I went for the HD version regarding this lens only.

---------- Post added 04-29-21 at 03:39 PM ----------

QuoteOriginally posted by Kozlok Quote
The edge performance just isn't up to it. If you want a landscape lens, send the 43 back and get the DA40, assuming you are shooting APS-C.
Yep, I have both, but non-HD. Edge-to-edge is definitely better with the DA 40. Great on my KP. But I like my FA 43 for convenient general purpose on my K-1 II, and good in low light situations.


Last edited by mikesbike; 04-29-2021 at 03:40 PM.
04-30-2021, 01:56 AM   #35
Pentaxian




Join Date: Mar 2021
Photos: Gallery
Posts: 999
Original Poster
QuoteOriginally posted by jct us101 Quote
The original limiteds have a really terrible purple fringing problem since they were made for film cameras - my 77ltd was more purple than you could imagine when shooting with the bright sky was involved. Sure it's easy to remove, but it's annoying to need to. Not sure how bad the 43mm is in this regard though.

I found it did have purple fringing esp when shooting into the sun; and you are right that although it is easy to remove, I'd rather have not to. Now that the lens is going back, I'm looking forward to what I see on the HD (I'm yet to place an oder).
04-30-2021, 09:34 AM   #36
Veteran Member
jct us101's Avatar

Join Date: Jun 2008
Location: Rohnert Park, CA
Posts: 3,793
QuoteOriginally posted by vijaykishan Quote
I found it did have purple fringing esp when shooting into the sun; and you are right that although it is easy to remove, I'd rather have not to. Now that the lens is going back, I'm looking forward to what I see on the HD (I'm yet to place an oder).
Post some samples! I'm torn on the DA 40 or this as well.
04-30-2021, 03:43 PM - 1 Like   #37
Veteran Member
robjmitchell's Avatar

Join Date: Oct 2007
Location: Melbourne Aus
Posts: 1,776
QuoteOriginally posted by DWS1 Quote
I may be wrong, but I seem to recall reading somewhere that the HD coating uses a somewhat different application process involving some sort of chemical bonding resulting in a more durable coating.
SMC is quite durable, the problem is that it’s costly, and the vapour deposition process is not as precise causing nano-distortion in the optical surface the results in loss of contrast.

HD is similar to other nano particle processes (essential silica particles) but uniquely it is bonded to produce a firm and consistent surface. It can also be used as the top layer on SMC for the Aerobright II coating. Because it is painted on it is also much cheaper than multiple rounds of vapour deposition used in SMC.

05-01-2021, 04:41 AM   #38
Pentaxian




Join Date: Mar 2021
Photos: Gallery
Posts: 999
Original Poster
QuoteOriginally posted by robjmitchell Quote
SMC is quite durable, the problem is that it’s costly, and the vapour deposition process is not as precise causing nano-distortion in the optical surface the results in loss of contrast.

HD is similar to other nano particle processes (essential silica particles) but uniquely it is bonded to produce a firm and consistent surface. It can also be used as the top layer on SMC for the Aerobright II coating. Because it is painted on it is also much cheaper than multiple rounds of vapour deposition used in SMC.
Thank you and very interesting indeed. Would appreciate a link or document reference to learn more.

---------- Post added 1st May 2021 at 13:44 ----------

QuoteOriginally posted by jct us101 Quote
Post some samples! I'm torn on the DA 40 or this as well.

I already have the DA40, and using it on the K5, The DA40 is an OK-ish lens what does its job without fuss and just a little bit thicker than the 43mm Lens cap. It produces a decent Bokeh and sharp enough for anything >F4 so for most landscapes this would be good fit on the APSc, on the K1 it induces heavy vignetting and is unusable at open apertures.

---------- Post added 1st May 2021 at 13:47 ----------

QuoteOriginally posted by Kozlok Quote
Don't get me wrong, I have stitched with the 43 a few times. I've just not always found it successful. Here's one I shot at f2 and managed to pull off. I had no tripod, so had to do it hand-held. There is a wider version on my hard drive, but I didn't like it as well. This is about 3 shots wide.
Would you be able to enlighten me why ? Since I'm looking at this lens as a part landscape lens for pano, your experience would be valuable for to avoid pitfalls. - thanks in advance
05-01-2021, 10:03 AM   #39
Pentaxian
Kozlok's Avatar

Join Date: Jun 2012
Location: Albuquerque
Photos: Gallery
Posts: 3,148
The 43 is generally poor in the corners. If you have enough frames, the software seems to be able to work around it and choose only bits and pieces from the centers of the frames. If I don't have enough overlap, then the edges have to get used, and that's when the stitching software seems to have problems and you get tears and blurry bits here and there. Sometimes it's easy to fix, sometimes not.

The pano I shared is only 3 frames wide, but I probably have 6 shots with 50% overlap to do it.
05-01-2021, 10:54 AM   #40
Pentaxian




Join Date: Mar 2021
Photos: Gallery
Posts: 999
Original Poster
QuoteOriginally posted by Kozlok Quote
but I probably have 6 shots with 50% overlap to do it.
Thanks so much for sharing this. 50% overlap sounds a lot, I can usually get away with a bit less than 25% on the smc 50mm Macro when turned over the NPP. What F-stop are you using ? if I may ask. AFAIK the 43mm is notorious for soft corners for anything bigger than F5.6 aperture. Now if you say that you are finding that you need 50% overlap at anything smaller than F8 aperture, then this lens is a no-go for me HD or No-HD. Thanks once again.
05-02-2021, 02:30 PM - 1 Like   #41
Pentaxian
Kozlok's Avatar

Join Date: Jun 2012
Location: Albuquerque
Photos: Gallery
Posts: 3,148
I think it depends on the scene. The one I posted from San Francisco at night was at f2.0.

I found another one I did in South Dakota which is at f8. I am uploading the pieces to my secondary Flickr account. You can find them at Flickr/kozlok2. You can examine the corners, download them, do whatever you want. I think it will help you make a decision.

It looks like I did around 50% overlap again with this one, but you can experiment with stitching smaller segments.


Last edited by Kozlok; 05-02-2021 at 02:37 PM.
05-02-2021, 05:23 PM   #42
Pentaxian
bdery's Avatar

Join Date: Mar 2008
Location: Quebec city, Canada
Photos: Gallery
Posts: 9,357
QuoteOriginally posted by jct us101 Quote
The original limiteds have a really terrible purple fringing problem since they were made for film cameras - my 77ltd was more purple than you could imagine when shooting with the bright sky was involved. Sure it's easy to remove, but it's annoying to need to. Not sure how bad the 43mm is in this regard though.
Not that bad, actually!

Not perfect, of course.

I would say that the circular apertures are a drawback for the 43mm, it's such a fantastic lens for starbursts! And bokeh is already superb.
05-03-2021, 01:26 AM   #43
Pentaxian




Join Date: Mar 2021
Photos: Gallery
Posts: 999
Original Poster
Just a short update -I did a small experiment at home and tried to do a panorama with 8 frames(single row) stitched with various % overlap with the 43mm smc. The minimumI could achieve a pano without manually placing control points is 10% overlap (at apertures F8 and smaller ie., F8 to F22).Do note, given that there are many straight lines with bookshelves and all athome, the stitching might be relatively easy for the S/W, in the field esp. innature, this might prove to be a tad more difficult. What I did find is that atapertures larger F5.6 the lens-field-curvature affects sharpness significantly(for flat targets at least). For apertures smaller than F8, the sharpness isgood enough for a stitch with just 15% overlap. In essence, this seems to be theexact lens I was hoping it to be, sharp only centre (5%-10%) at wider apertures and pin sharp corner to coner at F8-F16 for pano stiching. Now I'll repack the smc and wait for a nice deal on the HD. Thanks everyone for chiming in, was a great help.

---------- Post added 3rd May 2021 at 10:29 ----------

QuoteOriginally posted by bdery Quote
Not that bad, actually!

Not perfect, of course.

I would say that the circular apertures are a drawback for the 43mm, it's such a fantastic lens for starbursts! And bokeh is already superb.
Do you already have the new HD 43mm in your possession ? If yes, would you mind sharing one Bokeh frame... please ? I like the 43mm starbursts, but the Bokeh was not to my taste. In the end I favour bokeh and flare control more than Starbursts (for my work at least) hence moving to HD (hoping that these are addressed) . Thanks in advance.
05-03-2021, 01:53 AM   #44
Site Supporter
Site Supporter
pres589's Avatar

Join Date: Jan 2014
Location: Wichita, KS
Photos: Albums
Posts: 4,529
Are there any good discussions with examples of HD lenses actually producing less CA than the former SMC version? The brief amount of reading I've done on the subject makes me believe it's a lens design & construction issue which doesn't change with the switch from SMC to HD.

It would be interesting to see which is easier to deal with; fixing CA in post with the FA 43, or fixing vignetting of the DA 40's.
05-03-2021, 02:34 AM   #45
Loyal Site Supporter
Loyal Site Supporter




Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 27,650
I will say that for my K-1 I chose to go with the DA *55. I thought the spacing between it and the 31 mm/77mm (I now have the DFA *85 in place of the 77mm) was better than the 43 and I like its rendering better. I think edge sharpness is pretty decent from f4 on on full frame. It does produce nice star bursts too and has less fringing. Just something to think about.



Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
43mm, 50mm, bokeh, da, da40, filter, flare, hd, hds, k-mount, landscape, lens, ltd, mm, pano, pentax lens, portraits, slr lens, smc, stars, stitching, sun, surface, vapour, version, wr
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
HD Pentax 31mm F1.8, 43mm F1.9 and 77mm F1.8 Limited lenses dilemma............. i_trax Pentax SLR Lens Discussion 52 05-04-2022 09:13 PM
HD DA 21mm Limited vs. HD DA 20-40mm Limited seachongo Pentax SLR Lens Discussion 10 05-09-2015 11:18 PM
For Sale - Sold: Pentax 43mm limited(Silver) and 77mm limited(Silver) and more pighead Sold Items 17 03-14-2009 11:35 AM



All times are GMT -7. The time now is 12:20 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top