Showing posts with label weather-sealing. Show all posts
Showing posts with label weather-sealing. Show all posts

Thursday, March 31, 2016

Nikon 10.5mm f/2.8 fisheye lens versus Olympus 8mm f/1.8 fisheye lens

I'm doing a quick entry here to start.  I just received a Nikkor 10.5mm f/2.8 DX format lens.  It's a used lens that was originally owned by LensRentals.com and sold by their liquidation division.

Buying a Nikon D7200 was mostly an experiment in order to get wider angle landscape shots more easily.  I've done that with the Tokina 11-16mm f/2.8 and Sigma 18-35mm f/1.8 lenses.  These are not particularly responsive lenses and from the start, they've made the D7200 feel unresponsive, especially for someone who photographs sports 99% of the time.  As I've slowed down because of my heart defect, I've been able to do more creative shots.  Still, I pick up the Olympus E-M1 and 8mm f/1.8 fisheye lens because of the difference in light gathering.

Oh, wait!  APS-C versus micro Four-Thirds can't even be close.  Well, I'm finding that real life is much different than examining a bunch of numbers and graphs.  People who don't shoot much have been telling me how much greater APS-C is.  The big difference I see between my GH4, GX8, E-M1 and the Nikon D7200 is that the Nikon body can record raw files with 14-bit depth rather than 12 bits.  Automagically, that increased the possibility of better dynamic range, color, and more.  Whether there is actually more is the real question.  I assume that there is.  Nikon has been good about wanting to deliver the best image quality.

In any case, I received the Nikkor lens about an hour ago and had lunch first, to give me some time to think.

To a certain extent, the difference in maximum aperture is offset by the higher ISO usability.  So far, I've found a maximum ISO sensitivity of ISO 4000 with the D7200 versus ISO 3200 for micro Four-Thirds.  Yes, you can go much higher and get something but for photographing sports, I have to be more careful.  Once it's fairly dark, neither is going to be okay without extra lighting.  However, auto focus on the D7200 goes down to EV -3 and the GH4 and GX8 goes down to EV -4.  I can't find a figure for the E-M1 but it has been decent in very low light, although it thinks a lot at that point.

Taking the Nikkor lens out of the box and wrapping, I was surprised how utterly small it is for a dSLR lens.  It's not much bigger than the Olympus micro Four-Thirds fisheye lens.  Yes, it's a DX format lens, so it can be smaller.  The best thing is that it can be used on the FX format camera bodies in DX mode.  (However, without weather-sealing and with a smaller maximum aperture, it isn't a surprise than the Nikkor lens is small.  If it had similar attributes, it would be much larger.)

Olympus 8mm f/1.8 versus Nikkor 10.5mm f/2.8 DX

Olympus 8mm f/1.8 versus Nikkor 10.5mm f/2.8 DX

As with all Nikkor lenses, I struggle to figure out which lenses are weather-sealed.  At full price of roughly US$775, I would expect that it would be.  That doesn't mean that it is, and from the description in the listing, I would say that it is not.  They mentioned some dust inside the lens--that did not affect image quality.  I've never had such a problem with my Olympus lenses, even though I'd used them out in hurricanes and in dusty conditions--severe circumstances.  Hopefully, the lens won't have a problem in bad weather.  I'm already hiding the lenses I have for the D7200 unless it is completely dry.  None of them are weather-sealed.

E-M1/Olympus 8mm f/1.8 versus D7200/10.5mm f/2.8

It looks a bit small on the D7200.  I suppose the small size was important to get it onto the D3300.

Hopefully, I'll be out shortly to actually shoot with it.

Nikkor 10.5mm on D7200
Olympus 8mm on E-M1
They both do very well.  I had to change the Nikon photo's white balance, probably because I'm still having new user problems.

Speed of operation is about as good as you can get on the D7200.  The E-M1 is just amazingly quick and much faster than the D7200.  It's not just 10 fps versus 6 fps burst mode but the fact that the E-M1 only has to deal with 16 MP, 12-bit files and the D7200 has 24MP, 14-bit files.  I thought that the Expeed 4 class processor would be much faster, though.

Update 2016.04.01: I'm pleased to say that the Nikkor fisheye lens seems to work quite well, even though it was sold as used.

I've found the problem with the white balance control, but geez, what a maze to find it!  Olympus' Super Control Panel is amazingly helpful.  Even Panasonic's Quick Menu is more effective than the D7200's informational panel.  Perhaps, the D500 without a mode dial would be more efficient without looking at the display, but the D7200 way is not working as well as I would like.

As far as I'm concerned, Nikon has technological advantages over Canon, but Nikon is behind everyone else for user interfaces for quick adjustments.  I've heard that Olympus' menus are the worst but my experience is that all brands have crap for menus.

Back to the fisheye lenses, I haven't done extensive testing yet, but it would be a good assumption that I can use the Olympus combination much longer into the dark and still get sharp photos.  I may test the Nikon combination tonight to see if it will actually focus down to EV -3 or thereabouts.   My previous experiences with the Sigma 18-35mm f/1.8 ended in failure.

Looking a bit closer, there is fringing.


Nikon
Olympus
The Olympus combination shows less fringing, but I wonder if there is software correction affecting the outcome, since micro Four-Thirds bodies fix things too often.  I suppose I'll try to put it in the GH4 or GX8 to see what happens.  I'm usually too busy shooting to test.

Friday, October 18, 2013

Why weather-sealed cameras and lenses are great

In the past 2 weeks, I've photographed cross country meets in the rain.  In one, it was an absolute downpour.  It was amusing to see people cradling and coddling their equipment because they didn't want to get it wet, while I stood boldly out in the weather.  (Yes, I was rather soaked but I got the photos I wanted.)

When I first bought my Four-Thirds equipment in 2004, I bought the Olympus E-1, the 50-200mm f/2.8-3.5 and the 14-54mm f/2.8-3.5, all of which were weather-sealed.

Later in 2004, not satisfied with doing indoor sports and photos of flowers and animals and birds, I put myself and my equipment outside in three hurricanes.  Shooting in 75 mph winds is incredible, especially when rain is hitting you and reminding you that you can be hurt.

Olympus weather-sealed lenses are amazing

After each hurricane experience, I would go inside, and dry the equipment as much as possible and let it sit for a while before returning to the weather.  In numerous occasions since then, I've used my 50-200mm lens and Olympus E-1, especially for cross country.  It was only in late 2011 when it ceased to be my primary camera body, and an E-5 started to be.  The 50-200mm serves me regularly in outdoor sports, and can even be used on the Panasonic GH3, also weather-sealed, through a weather-sealed adapter.

I can't imagine taking out any other specification of equipment.  I have a Leica/Panasonic 25mm f/1.4 lens that was meant for the Leica Digilux 3.  It's quite sturdy but lacks the weather-sealing.  Considering that it was about the same price as the 50-200mm, it seems odd that it's not sealed but it is a Leica lens, even if it was supposedly hand assembled by Panasonic instead of Leica at about 1/3 the cost.

Seeing as how Nikon has embraced the ocean with their Nikon 1 AW1 and so many others such as Pentax are putting more of their lines into weather-sealed equipment, will the third parties finally do something?

As far as I can tell neither Sigma, Tamron, or Tokina have any weather-sealed lenses.  That would be a shame, especially with the Bigma 50-500mm lens.  To me, any lens priced at over US$500 should be sealed.  I'd hope that more companies would take care of it.  Can you afford to take your best equipment (or your only equipment) into a storm?

Update 2013.11.27: I'd love to take advantage of some of the lens deals out there.  The Olympus M.Zuiko 45mm f/1.8 looks a treat, and with a discount, even better.  However, the moment it's wet and stops functioning, I'd have to buy something else to replace it.  Similarly, the 75mm f/1.8 is great but could be affected by bad weather.  Within micro Four-Thirds, there are 5 weather-sealed lenses now: Olympus 12-50mm, 60mm macro, Panasonic 12-35mm, 35-100mm, and Olympus 12-40mm with the 40-150mm arriving in 2014.  I did everything with 3 lenses for years, though 150mm is not quite 200mm (40-150mm f/2.8 vs 50-200mm f/2.8-3.5), so I can't reach as far, although there is supposedly a 1.4x tele-converter due in 2014.

Update 2014.12.14: It's been over a year since my last update.  Pentax seems to be the least expensive way to get weather-resistant camera bodies, with the K-50.  They're also good enough to mark their lenses with WR to signify weather resistance.

micro Four-Thirds hasn't gained much ground.  The E-M5, E-M1, GH3, and GH4 are all weather-sealed camera bodies, but the number of corresponding weather-sealed lenses is still minimal.  The Olympus 40-150mm f/2.8 has been released, as has its 1.4x teleconverter.  Yes, the teleconverter works with only one lens as of now.

That said, Olympus have a 7-14mm f/2.8 ultra-wide angle lens, along with a 300mm f/4.0 super telephoto lens scheduled for 2015.  A number of Four-Thirds lenses are still available, which work reasonably well with the E-M1 and GH3 and GH4 using auto focus.

As I'm now getting into video, I'm looking at certain adapted lenses that are not weather-sealed.  While this area is in drought, that's generally not a problem but for dust.  Someone recommended the Sigma 18-35mm f/1.8 lens with the Metabones (essentially a reverse tele-converter) Speed Booster adapter.  This is supposedly a great lens but the ART series lenses are not weather-sealed.

Update 2015.04.29: I recently added the Pentax K-50 to my bag.  Both the body and the 18-55mm f/3.5-5.6 kit lens are weather-sealed.  It's a good, low cost option if you're on a budget.  I don't have any other lenses for it, so I should pick carefully, but one of the lenses that has been on my list is the Sigma 18-35mm f/1.8 ART lens, which is not weather-sealed.  I have a hate-hate relationship with Sigma but they've come a long way in the last two years.  I'll probably buy their USB dock also, so I can fix the front/back focus problems that they usually have.

Otherwise, I could buy the Pentax 16-50mm f/2.8, which is a sturdy, reliable Pentax lens but that maximum aperture means a lot and if I'm more concerned about getting the shot indoors or in lower light, the Sigma would be better, even though its focal length range is very limited.  The Pentax lens is better overall.

Olympus has an 8mm f/1.8 fisheye lens that will be available this summer--which likely means September 30th.   It will likely be the first fisheye lens I'll ever own, and since it is weather-sealed, it will be useful not just for skate parks, but for beach and bad weather photos too.

Update 2016.04.03: I gave away the Pentax K-50, and since then, I bought a Nikon D7200.  I've now got three lenses, none of which seems to be weather-sealed.

Sadly, I've been learning that outside Olympus, weather-sealing is not quite as comprehensive.  It seems that a lot of products are given a gasket to keep liquid from entering the camera body and perhaps, a fluorine coating on the frontmost lens element to resist liquids.  I would hope that there are also gaskets around zoom and focus rings, etc. but it doesn't sound as though it happens.

Considering that lenses last longer than bodies, why not do more for the lenses?

The Olympus 8mm f/1.8 fisheye lens is well built.  I'm thinking that it is as weather-resistant as the 12-40mm f/2.8 and all of the Olympus Four-Thirds SHG and HG lenses.