dbm305

Lives in Australia Sydney, Australia
Works as a Academic Philosopher
Has a website at www.dbm305.smugmug.com
Joined on Feb 24, 2008

Comments

Total: 102, showing: 1 – 20
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I loved my LX3 and I really wish other makers would use the slight,tbovesize sensor so as to give more aspect ratios with less loss of resolution

Link | Posted on Mar 23, 2017 at 11:55 UTC as 77th comment
On article Oberwerth launches Donau line of leather lens pouches (55 comments in total)
In reply to:

dbm305: Leather! Zeiss advises never to keep lenses in leather pouches, for fungus related reasons...

There are some affordable decent chinese cabinets on eBay from about 250 for 25l to $800 for 120l. Tip: don't believe the hygrometer reading. They seem to be consistent but consistently off by up to twenty percent. Get a decent hygrometer and adjust the cabinet thermostat to whatever gives your desired humidity (in my case 45%) even if the cabinet claims that's some scary number like 15 or 70...

Link | Posted on Mar 23, 2017 at 01:35 UTC
On article Oberwerth launches Donau line of leather lens pouches (55 comments in total)
In reply to:

dbm305: Leather! Zeiss advises never to keep lenses in leather pouches, for fungus related reasons...

I'm also here in Sydney, and all my gear is in dehumidifying cabinets after I lost thousands of bucks of OM gear to lens fungus some years ago!

Link | Posted on Mar 22, 2017 at 07:28 UTC
On article Oberwerth launches Donau line of leather lens pouches (55 comments in total)
In reply to:

dbm305: Leather! Zeiss advises never to keep lenses in leather pouches, for fungus related reasons...

https://www.zeiss.com.au/camera-lenses/en_au/website/service/fungus_on_lenses.html

Link | Posted on Mar 21, 2017 at 22:17 UTC

A sensible and courageous piece.
I think that the prevailing wisdom about the amazing gradation, tonality etc of MF is a hangover from film days, when the underlying sensor film) was pretty gritty. It made an *huge* difference to expose a big chuck of film and then enlarge it much less for the same print size.
But now that's so much less true. Yes if the MF lenses were faster, the sensors at the same tech level as smaller ones, the pixel levels higher, then there could be slight advantages at the cost of size weight money and flexibility/system depth. But that's not true yet.
And even if there were that advantage, under what conditions would the advantage be visible in a final image? With FF, whose advantage in resolution and DR against APSC is big , only occasionally is that advantage visible in a print or other consumed image, though the thinner DOF available often is. I can only think hat the situations in which the advantages of 50MP MF will be visible will be rarer still.

Link | Posted on Mar 21, 2017 at 22:14 UTC as 265th comment
In reply to:

esorensen: Never trust an article with portraits shot with wide angle lenses.

Never trust art driven by stereotyped conceptions of what focal lengths are appropriate to what subject.

Link | Posted on Mar 21, 2017 at 21:28 UTC
On article Oberwerth launches Donau line of leather lens pouches (55 comments in total)

Leather! Zeiss advises never to keep lenses in leather pouches, for fungus related reasons...

Link | Posted on Mar 21, 2017 at 01:28 UTC as 7th comment | 9 replies
On article Throwback Thursday: Our first cameras (386 comments in total)

First camera was a Diana like plastic 6x6 when I was ....6. The prints were contact printed.
Then never had another camera until my grad school days, when after much research got an OM 40. I recall I liked that it had ESP metering (which was just a crude method of trying to figure out if the subject is backlit and compensating accordingly..)

Link | Posted on Mar 16, 2017 at 12:08 UTC as 270th comment
On article Sony FE 85mm F1.8 sample gallery and first impressions (137 comments in total)
In reply to:

HeyItsJoel: Ugh. Sony colors are so awful.

You should use things like colour checker ideally in the light that you are shooting in: you could have profiles for daylight at midday, your own studio lights etc.

The resulting profiles will be likely more colormetrically accurate than the camera profiles, which do two things - calibrate AND adjust to taste. And the taste of each camera co is different. I prefer to keep those things separate. Start with a fairly accurate profile, and have LR settings that vary colour to my taste for different purposes.

Link | Posted on Mar 5, 2017 at 03:55 UTC
On article Sony FE 85mm F1.8 sample gallery and first impressions (137 comments in total)
In reply to:

HeyItsJoel: Ugh. Sony colors are so awful.

Rich have you tried using colorchecker passport or an even fancier tool to make your own camera profiles?

I use there profiles and can't tell the difference between cameras when so profiled. And what's more you can make different profiles for different kind of light - really helps with LEDs.

The default output is very accurate, and I guess not many people like accurate. But you can save as presets your favourite deviations from accuracy.

Link | Posted on Mar 4, 2017 at 10:27 UTC
In reply to:

Angrymagpie: Just in case I'm misunderstanding this, the mystery is basically: how come such an expensive and market-as-innovative-and-professional lens did so poorly in the test?

Roger are you going to be able to say at some time?

Link | Posted on Mar 3, 2017 at 23:10 UTC
In reply to:

iamatrix: Unfortunately so many people who praise lenses these days are paid by the manufacturer to do so, so it's extremely hard to discern the truth.

Someone posted that there might be undue influence due to paid trips etc. but every major manufacturer does that, so it hardly favours one over another. And every manufacturer needs exposure frim the really big sitrz - and dpr is the biggest, so a threat of boycot idnt credible (even if it did happen to ll)

Link | Posted on Feb 25, 2017 at 20:46 UTC
On article CP+ 2017: Hands-on with new Voigtländer E-mount primes (116 comments in total)

Barney (If I may) are you sure the 40mm f1.2 is based on an older lens?
AFAIK there is no older 40mm f.12; there was a 40mm f1.4 and there is a 35mm f1.2. I suppose (as some have suggested) that optimising for the sony filter stack might increase the FL of the 35 a bit so they called it a 40. But unless they specifically told you the 40 was based on an earlier one, seems more likely it's a new design (unlike the 35). Hope so anyway. Any clarification appreciated!

Link | Posted on Feb 24, 2017 at 10:58 UTC as 24th comment | 3 replies
On article Leica Summilux-SL 50mm F1.4 sample gallery (368 comments in total)
In reply to:

EduardoKleinFichtner: The best lens ever made. Period.

I have hired it, and compared it with the Mitakon. Couldn't see much difference, and neither were as good as a top slower 50 stopped down.

Having said that, the comparison was on a Sony A7rII not an M body, so I expect the peripheral quality would be better on an M or a Kolari mod body.

Link | Posted on Feb 11, 2017 at 09:53 UTC
On article Leica Summilux-SL 50mm F1.4 sample gallery (368 comments in total)
In reply to:

EduardoKleinFichtner: The best lens ever made. Period.

Noctilux? It's only trick is being ultra fast. And the price you pay for that, other than dollars, is not so great performance stopped down.

Link | Posted on Feb 10, 2017 at 12:08 UTC
In reply to:

Rhawi Dantas: Sweet lenses... I will be getting the 85.

And what the hell is a 'BOCA'?

People pronounce English words differently all over the place. And this word isn't even English. Where I'm from we sort of try to say it like we hear it said in Japanese -.but I'll bet a Japanese speaker wouldn't think so. We knew what he meant....

Link | Posted on Feb 10, 2017 at 12:06 UTC
In reply to:

Rhawi Dantas: Sweet lenses... I will be getting the 85.

And what the hell is a 'BOCA'?

It's American for Bokeh

Link | Posted on Feb 10, 2017 at 10:44 UTC
In reply to:

unbelievable: This review shows exactly why - for me - the MFT system makes the most sense as a mirrorless camera system. The penalty of (slightly) reduced image quality is compensated big time by a tremendous increase in portability over APS-C and FF.
(I fully understand that other antropomorphic entities have a different set of priorities)

Right, what this shows is that M43 is great if you want relatively deep DOF. The penny 1.7/20 is decent and tiny. Of course the thinnest DOF you can get is f3.4 equivalent.

no-one makes a modern 3.4/40 FF lens, which would be the equivalent. But my guess is that it wouldn't be much bigger or heavier. But that's not the point - no-one makes slow FF primes (sadly). Where the small formats really shine is in getting lots of pixel density behind long lenses. One day the larger formats will compete - i.e. when their resolution is such that an M43 or APS crop has more pixels than the current generation APS and M43 sensors. But until then this is a really valuable use.

Link | Posted on Feb 9, 2017 at 05:48 UTC

I'm sure it's great, but so it should be at that size. I worry that the fight to have the best *testing* lens will drive lens sizes ever upwards, where the resolution and evenness advantages, while real, won't be noticeable in real world prints.

Link | Posted on Feb 9, 2017 at 00:08 UTC as 93rd comment
In reply to:

zeratulmrye: Don't know about this one but the first generation is actually a rebranded mitakon 50 0.95

The 15 blades seems to be only difference with the Mutakon, but of course the number of blades is irrelevant wide open and nine is fine stopped down a bit, and you sure aren't biuting this lens to use at f2.8!

Link | Posted on Dec 7, 2016 at 23:36 UTC
Total: 102, showing: 1 – 20
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