Register a SA Forums Account here!
JOINING THE SA FORUMS WILL REMOVE THIS BIG AD, THE ANNOYING UNDERLINED ADS, AND STUPID INTERSTITIAL ADS!!!

You can: log in, read the tech support FAQ, or request your lost password. This dumb message (and those ads) will appear on every screen until you register! Get rid of this crap by registering your own SA Forums Account and joining roughly 150,000 Goons, for the one-time price of $9.95! We charge money because it costs us money per month for bills, and since we don't believe in showing ads to our users, we try to make the money back through forum registrations.
 
  • Post
  • Reply
Clayton Bigsby
Apr 17, 2005

Wyeth posted:


I bought it because the 50mm 1.4 and 1.8 are nonfocusing crap

Gotta say that I am interested in this lens too. Pancakes are cool, and the price is quite affordable. 40mm on crop makes not so much sense to me, but on FF it is a really nice focal length. Used to be a strict 50mm guy, but in the past year I suddenly became enamoured with the 35-40mm range for some reason. It seems like most shooters eventually end up there for "general purpose" type shooting; I kept trying it over the years and never really liked it (too wide) but sometime last year it just clicked for me and started working. Now I don't shoot 50mm at all anymore (and will sell the ZE 50/1.4), and am happy with a 35/85 or so combo (20 and 45 on micro 43 right now).

Also would like to throw in a vote for thread title: Camera Gear v8 (is really v12.8 on crop)

Adbot
ADBOT LOVES YOU

Clayton Bigsby
Apr 17, 2005

FormerFatty posted:

I have a quick and possibly stupid question.

I have never used a teleconverter before and I have no idea how they're mounted.

If I have a M42 mount lens fitted with an adaptor to fit my K-Mount Pentax K-5, do I need a M42 mount teleconverter or a K-Mount teleconverter?

Either.

Your options are:

M42 lens <-> M42 to K mount adapter <-> K mount TC <-> Camera

or

M42 lens <-> M42 TC <-> M42 to K mount adapter <-> Camera

Note that if you go for the M42 TC make sure to research it first as a lot of cheap crap was offered in M42...

And don't buy a 2X one!!!

Martytoof posted:

It's v12 on brands that matter :smug:

Oh yeah, Sony.

Clayton Bigsby
Apr 17, 2005

FormerFatty posted:

Please elaborate

Well, they give up so much optically that in almost all cases (excepting super high end combos like a Canon 300/2.8 and 2X III) you get a better result using a 1.4x and cropping. "Affordable" setups with a 2X generally end in (mushy) tears.

Clayton Bigsby
Apr 17, 2005

FormerFatty posted:

Would this degradation be as pronounced on a relatively wide aperture, good quality telezoom, say a 500mm f4.5 Asahi-Pentax?

If you get a really good TC maybe you will be OK, but realistically you are better off with the 1.4.

Clayton Bigsby
Apr 17, 2005

powderific posted:

2x teleconverters really do need to have glass that's not just good but bordering on spectacular. Even a lens that's really excellent normally might wind up not so good with a 2x.

Not to mention f/4.5 with a 2X would result in f/9, and you will likely need to stop down a bit for better results, meaning you will be shooting at something like ISO 800 or 1600 in the middle of the day...

Try a 1.4x of good quality, the Pentax lens should work nicely with that. I have what is arguably spectacular glass (500L) and I am not going past 1.4x on that either.

Clayton Bigsby
Apr 17, 2005

Been very happy with Lenmar myself. Their batteries fit as well as OEM ones (unlike most others) on the 1Ds II.

Clayton Bigsby
Apr 17, 2005

Kaluza-Klein posted:

I would like to buy a polarizing filter for my GF1's lenses. From reading the first post in this thread I believe I need a circular polarizing filter.

Is this the right one? http://www.amazon.com/Marumi-67mm-Super-Filter-Japan/dp/B003QSG6SS/

Here is the 52mm, which is quite a bit cheaper.
http://www.amazon.com/Marumi-DHG-Polarizer-CPL-52mm/dp/B003LCKN24/

The two lenses I have use 46mm and 52mm threads. Doing a quick search, the largest m4/3 threading size I noticed was 67mm.

I think I may get the 52mm since it will cover my current lenses and who knows if/when I will get others.


Am I on the right track here? Can anyone recommend 'step-down" rings? I am aiming for cheap, if you haven't noticed.

Well, the OP is not entirely correct; you need a step-up ring to adapt a bigger filter to a smaller lens thread. Step-down rings are the opposite, where you want to stick a smaller filter on a lens with a bigger thread diameter--usually not a good idea because of vignetting.

Personally I chose to have a set of different size polarizers so I can use my lenses with their hoods; if you use step-up rings you want to make sure to have a hood that fits the polarizer's threads.

Clayton Bigsby
Apr 17, 2005

Kaluza-Klein posted:

Yeah, I figured out that step-down and step-up rings are different before I purchased :p.

My not so fancy lenses don't have hoods!

Every lens should have a hood. Wish all manufacturers (looking at you, Canon and Olympus) included the hood instead of charging rear end-raping prices for them separately. You would think they have an interest in ensuring the buyer gets the best possible pictures out of the thing, so why skimp on a dollar's worth of plastic that actually helps image quality? Fuckers.

On a gear note, picked up this:
http://www.ghilliesuitwarehouse.com/products/CamoSystems-Jackal-Ghillie-Suit.html

Should be a little more portable than my bag hide.

Clayton Bigsby fucked around with this message at 19:39 on Jul 5, 2012

Clayton Bigsby
Apr 17, 2005

Beastruction posted:

Lens hoods also bounce when the lens goes face first into things.

That too. It blows my mind when I see people (just went to Legoland in Denmark with my daughter, lots of examples there) shoot with the following combo: Camera, lens, REVERSED lens hood, cheap poo poo "protective" filter.

Yeah, explain that one.

Clayton Bigsby
Apr 17, 2005

spog posted:

I've got one of those cheapy knock-off battery-grips. The controls seem okay, but it's made of that horrible plastic that feels like it will shatter if you squeeze it too hard.

Is there any type of tape or self-adhesive covering that will give a rubbery/leathery effect?

I'm tempted to use duck tape, except it's too shiny and the edges will weep glue.

Try some gaffer's tape; every photographer should own a roll anyway.

Clayton Bigsby
Apr 17, 2005

DJExile posted:

Unless I'm mis-reading you, Olympus does include hoods with their lenses.

Not m4/3 that I have seen. E.g. 45/1.8, 12/2, 75/1.8 etc.

Clayton Bigsby
Apr 17, 2005

Augmented Dickey posted:

Apparently they were available for the Icarex 35 at some point, but good luck finding one. I've always wanted a WLF in 35mm too.


Some Exaktas had them as well. Or get a Yashica T4 which is a point and shoot with a WLF.

Clayton Bigsby
Apr 17, 2005

Augmented Dickey posted:

Does the Yashica really have a WLF though? After a quick google image search it just looking like a regular point and shoot brilliant viewfinder with a mirror.

Not TTL, no, but still a waist level finder of sorts. Kind of like a TLR.

Clayton Bigsby
Apr 17, 2005

Bob Socko posted:

I don't think it will work. USB ports output a very small amount of DC power (5 volts, .5 amps), whereas wall outlets put out a much larger amount of AC power (110-120 volts, 15-20 amps). Even if you converted the USB output to AC power through a voltage converter, it's not going to have anywhere near as much power as the charger is expecting. I would not expect the charger to function, or if it does, it won't work in any meaningful way. The same would be true for pretty much anything you plugged in, so that's probably why no one has built such an adapter.

Well, the charger is not going to pull any 15 amps from your 120v outlet. I just grabbed my 7d charger and it uses 0.21 amps at 120v. But yeah, even that is about 5x what USB can supply.

Clayton Bigsby
Apr 17, 2005

TheLastManStanding posted:

That's the input, the output (for the charger I grabbed) is 8.4v @ .55 amps which is 4.6W, less than twice the standard for usb (2.5W).

Well, the charger I used for an example has an output of 8.4v 1.2A so 10.1 watts which is borderline for the high power USB ports (e.g. the ipad draws 10 watts). Definitely plausible, you are right.

Clayton Bigsby
Apr 17, 2005

Martytoof posted:

Some fucker on RangefinderForums supposedly bought a dresser full of Leica Ms and Leica lenses for $50. I have to call the most immense bullshit on his story, but I guess the kernel of truth in the whole thing is that there are people out there with "old film cameras" that don't know what they're worth and will probably give you a great deal on their dead husband's old film leicas because their grandson just bought them a new panasonic something-or-other point and shoot.

Some years back I was at a used camera fair, and witnessed a quite old guy looking to sell his "old cameras" to one of the "camera dealers" there. The dealer took a look at some rather minty Leica IIIs with what appeared to be absolutely perfect lenses (some very rare ones at that), said the shutters were "probably old and worn" and offered... 200 bucks. I pulled the guy aside rather quickly and explained what he had and what it was worth and he ended up going back home to figure out a better way to resell it.

Sorry, camera dealer, you were a greedy rear end in a top hat.

Clayton Bigsby
Apr 17, 2005

Martytoof posted:

FYI after handling a real life Leica M3 I now have the Leica lust.

Don't be me, kids.

I am attempting to fill this void with cheap soviet Leica III knockoffs but somehow I doubt this will work.

Yeah, you are screwed. I have an M3 + 50/2 Summicron DR (with no haze!) and it is pure camera porn.

Look for an M4-2, they are really nice and often don't run too high on ebay. I bought mine for 400 bucks and later traded it for an M3. :)

Clayton Bigsby
Apr 17, 2005

dissss posted:

With my Canon I use it travelling because jpegs are much easier to look though on a netbook.

If you are just going to look through them why not shoot RAW+S and save some space?

Clayton Bigsby
Apr 17, 2005

spog posted:

I don't think all bodies can shoot RAW+S: my S90 and 400D only have RAW+L, my 40D has RAW+all

It also has the SRAW option, but I am in 2 minds about that: it seems a bit silly to accept the inconvenience of RAW but not get as much info as possible out of it.

Ah, did not know there were bodies without RAW+S. Learn something new every day.

As for sRAW, yeah, not sure. If the files were much smaller I could see the purpose, but I gather that the mid-size sRAW file is not much smaller than the real thing.

Clayton Bigsby
Apr 17, 2005

DJExile posted:

Anyone have the Olympus OM 28mm f/2.8? I'm going overseas in 2 weeks and a wider lens for my OM1 would be nice.

I have the 28/3.5 and it is quite nice; I gather the 28/2.8 is even better though not by much.

Have you considered the 24/2.8? I paid 120 bucks for mine and it is wonderful.

Clayton Bigsby
Apr 17, 2005

Supersonic posted:

I've owned a Canon Rebel XT for a year now, and I've become fairly decent at shooting in manual mode with my 18-55 (non IS) kit lens. For one of my jobs, I need to frequently take photos of cans. I'm looking for an affordable lens which can take nice photos of said cans in various settings. Which kind of lens should I be looking for?

Here are some photos that I've taken recently.

Keep in mind that the 85s have a relatively long minimum focusing distance, which may come into play when doing product shots.

Clayton Bigsby
Apr 17, 2005

Man, I love those Fujis!

Clayton Bigsby
Apr 17, 2005

HPL posted:

Pentax glass is probably the best bang for the buck because it's so common plus there are bazillions of third-party K-mount lenses out there. I'd stay away from the old Russian M39 glass because it's not as good as your typical multicoated Japanese SLR glass plus minimum focus distances are usually poor with rangefinder lenses.

M39...

First off, M39 is not always rangefinder glass. There were SLRs using M39 (i.e. 39mm diameter thread), and some great commie lenses like the Helios 85/1.5 can be found in that mount. No clue if adapters for those to NEX are available, but I recall having to use M39->M42->EF adapters on Canon some time back.

The more common M39 is rangefinder mount, but there you have some, uh, local dialects if you wish. Leica used a 26 threads per inch 39mm diameter version, while the russians (FED for instance) used a 1mm thread pitch, which was slightly off and can potentially cause some troubles. Then there was Canon using a 24 threads per inch mount, further adding to the confusion.

As for Pentax, the best bang for the buck is to be found in M42 mount (thankfully this one is standardized if you do not consider the Tamron T-mount). There are tons of great lenses in M42, not only Pentax.

Clayton Bigsby
Apr 17, 2005

longview posted:

Should have bought Pentax

Yeah, I really do not get why other manufacturers have not done this.

Clayton Bigsby
Apr 17, 2005

evil_bunnY posted:

Patented hole technology!

Even if Pentax does have a patent, I'd imagine you could just buy the entire company for about tree fiddy.

Clayton Bigsby
Apr 17, 2005

Mr. Despair posted:

Ricoh beat you to that, sorry!

And so did Hoya, but once Ricoh realizes there is not much profit to be made in selling (well engineered) premium crop bodies to people who will never buy a new lens since a mold-ridden 1970s Takumar is God's gift to photographers Pentax will probably be passed on to the next suitor.

Clayton Bigsby
Apr 17, 2005

Beastruction posted:

So it's like a reverse teleconverter.

They are not uncommon for hobby astronomers. Usually referred to as "telecompressors", simply reducing the focal length and the rest follows. Since f-stop is focal length divided by aperture, well...

In fact, these have already been in use in camera optics, just built into the lenses (some of Olympus faster 4/3 zooms are just longer/slower zooms with elements that act as a telecompressor).

Clayton Bigsby fucked around with this message at 22:14 on Jan 15, 2013

Clayton Bigsby
Apr 17, 2005

SoundMonkey posted:

It's also worth noting that screw-drive lenses CAN'T have really nice smooth focus rings - if they had that much dampening on them, the screw drive would poo poo itself trying to AF them.

I assume you went away from the Canon gear discussed as Canon does not use any screw drive lenses; that said, you can definitely have decent manual focusing feel AND screw drive, go check out the Pentax 77/1.8 for instance. The screw drive autofocus is not attempting to turn the manual focusing ring on many lenses, but rather it is decoupled at that point.

Clayton Bigsby
Apr 17, 2005

alkanphel posted:

It doesn't really change the DOF, only the light-capturing ability.

That would be a really neat trick.

Clayton Bigsby
Apr 17, 2005

Platystemon posted:

That’s how the numbers work out. The 0.71× on the focal length and extra stop on the aperture exactly cancel each other out, as any depth of field calculator shows.

Not sure we are talking about the same thing.

Clayton Bigsby fucked around with this message at 00:14 on Feb 3, 2013

Clayton Bigsby
Apr 17, 2005

Platystemon posted:

We are.

The bare lens on a full‐frame camera and the lens with Speedbooster on a 1.41 crop factor (or, more precisely, √2 crop factor) camera will produce identical images, minus aberration introduced by the Speedbooster. Same subject distance, same framing, same depth of field, and with ideal sensors, same noise.

Let the subject distance be 5 m.

On full‐frame (circle of confusion = 30 µmm) with a 50 mm lens at f/1.4, depth of field is from 4.62 m to 5.45 m.

On 1.5 crop (circle of confusion = 20 µm) with a 35.5 mm lens (50 mm lens with the Speedbooster attached) at f/1.0, depth of field is from 4.63 m to 5.43 m.

The small differences that remain are because 1.5 crop isn’t quite the ideal √2, because the Speedbooster multiplier is rounded from 1/√2, and because the full‐frame aperture value is rounded from √2. These factors partially cancel out or the difference would be larger.

The Speedbooster doesn’t really add a stop of light. The marketing is dumb. That extra stop cancels out with the smaller photosites. At f/1, each of the crop camera’s photosites will receive the same number of photons as the full‐frame camera’s at f/1.4, assuming the same pixel count and shutter speed. With ideal sensors, ISO 100 on crop will have the same noise as ISO 200 on full‐frame.

You are paying $600, carrying a few ounces of glass, and dealing with some aberration. In exchange, your mirrorless crop camera behaves like a mirrorless full‐frame camera with bad or non‐existent autofocus.

Yes, no disagreement there, however I was referring to what happens when you stick the speedboster on e.g. a 50/2.8 on a crop camera, vs shooting the "naked" 50/2.8 on the same crop camera. I was not debating the equivalency or lack thereof with the lens being used on full frame.

And they are right in saying it "adds a stop of light" if you look at it from this point of view. If your options are shooting a naked 50/1.4 or a "boosted" 35-ish 1.0 on the same NEX-7 then you are indeed gaining a stop of light, no?

Clayton Bigsby
Apr 17, 2005

Platystemon posted:

Of course. You gain a stop v. the naked lens on the NEX.

The conversation started as a comparison v. full frame, though, and while it appears you gain a stop v. the naked lens on full frame, it’s an illusory one. I think a lot of people are confused by that.

That we can agree on. It boils down to the whole "equivalency" debacle, where the takeaway is that unless you need to shoot near wide open then full frame does not have a real advantage, as you can shoot at a larger aperture on crop and retain the same depth of field for a given subject distance and field of view.

That one is always fun to bring up when people get all starry eyed waxing lyrical about full frame.

As for the original post, yeah, you do gain an actual aperture stop (after all, that is how telecompressors work) but comparing to the lens on full frame the total light collection for the sensor has not increased.

Clayton Bigsby
Apr 17, 2005

Mr. Despair posted:

Yeah, but it's not a Genuine Canon Lens :smug:

Who the hell shoots Canon when there's a Zeiss in the same focal length? :smug: Ugh, plebes.

Clayton Bigsby
Apr 17, 2005

QPZIL posted:

Am I right in thinking that Canon is lacking in the primes area? I know with Nikon I had a bunch of G lenses, AF-D lenses, AI, AIS, whatever I wanted to use, but the selection doesn't seem to be there with Canon, they seem to focus more on zooms. Am I wrong there?

Dead wrong.

Canon has something like 41 primes currently being sold.

Clayton Bigsby
Apr 17, 2005

Paul MaudDib posted:

Probably not as expensive as you would expect given the speed. I would guess that it's a 28-50 f/3.5 with a telecompressor built in. It's how Olympus pulls off their fancy f/2 zooms (they're pedestrian full-frame 70-200 f/4 designs licensed from Tamron or Sigma with telecompressors added in).
Got something to back that up? Pretty sure I read a while back that their f/2 zooms were f/2.8 with a 2x telecompressor and the max aperture closed down a stop. Seems awfully big and heavy for being based on an f/4 one.

Clayton Bigsby
Apr 17, 2005

SoundMonkey posted:

Digital. And you can, just not the other way around (EF-S won't mount on EF, but EF will mount on EF and EF-S).

Canon full-frame digital uses EF to prevent your dumb rear end for using a crop lens and having your mirror smash into it. Oddly the 10D also used EF for no reason anyone can discern, despite being a crop body.

e: It's similar to Nikon's DX/FX, except in that case all the lenses are mechanically compatible with all the bodies, you just might get horrible vignetting if you go and be all stupid about it. The mirror smacking the rear element is a Canon thing, F-mount has a somewhat longer flange back distance, and I'm only aware of one Nikon lens that will smash your mirror (and you'll never own it or probably even see it).

You can find a list of the Nikon lenses to worry about here:
http://www.nikonians.org/reviews?alias=nikon-slr-camera-and-lens-compatibility

Canon changed from FD to EF back in 1987, which was seen as a huge gently caress you to Canon photographers at the time but has left Canon with a ridiculously comprehensive and compatible lens collection since that will work on any EF body. In fact, a modern IS lens will stabilize even on a body from the 80s. Good stuff. EF-S was introduced in 2003 with the original Digital Rebel. The 10D which came before while a crop body does not mount EF-S lenses.

Clayton Bigsby
Apr 17, 2005

Local camera store went out of business and sold their entire stock at 50%+ discounts. Went there to stock up on M43 gear (scored a 7-14, 100-400 and 45 macro), and got this little thing at 75% off.

Clayton Bigsby
Apr 17, 2005


25000 SEK, around 3000 USD. They go for 107,000 SEK new here.

Got a 55/2,8 SDM with it. Ordered a 150/3.5 and looking for a 35 as well.

So drat fun being back to using medium format with big floppy mirrors and oversized cameras. This one is built really well too (weather sealing etc) and basically acts like a large DSLR. Good button layout, articulated screen, useful high ISO etc. Love it.

The files are glorious but that's to be expected.

Had no intentions of buying something like this, but the conversation went something like

"Oh, is that a 645D up there?"
"No, it's the Z."
"Oh, well, nevermind then, bit out of my budget."
"How about 25k?"
"Are you loving joking?" *pulls out wallet*

Clayton Bigsby fucked around with this message at 14:11 on Apr 14, 2018

Clayton Bigsby
Apr 17, 2005

suck my woke dick posted:

:hellyeah: congrats, take some pictures

Oh, been out with it quite a bit. What a machine. Took some pics of the kids with their grandparents in a darkish room at ISO 25,600 and could easily make a nice size print of that.

Adbot
ADBOT LOVES YOU

Clayton Bigsby
Apr 17, 2005

the yeti posted:

Since the tripod thread is ancient and archived, what's babby's first decent tripod these days? I need it to keep a D700 and telephoto/macro lenses stable, so 2-3kg I'd guess.

How much are you looking to spend? Tripods generally fall under the "buy once, cry once" category where you'll eventually buy a fairly decent one so may as well get it right away and enjoy it rather than spending 2x as much on inferior ones to eventually arrive at it.

So get a nice Gitzo. You've earned it.

  • 1
  • 2
  • 3
  • 4
  • 5
  • Post
  • Reply