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-   -   Got a .42x fisheye, really unimpressed with it (https://forums.steves-digicams.com/add-lenses-49/got-42x-fisheye-really-unimpressed-120713/)

Webguy101au May 1, 2007 11:02 PM

I have a kodak DX7630 and have started to shoot panoramas, got sick of having to take so many shots for a full panorama with the normal lens, so decided to try a .42x fisheye screw-on job. It finally arrived and I had the camera here with me so tried some shots.

Firstly, it cannot be screwed on when you turn the camera on, otherwise the main lens hits the addon lens and the camera shuts down. So, you need to turn it on, zoom in 1 step before you can attach the lens and tube etc. I can live with that I guess.

I tried taking a few shots here in the office, it certainly was a lot wider than the normal lens which was good. Can't use the flash as it blocks it. The DX7630 I believe is not TTL metering, and it tends to under expose a shot. Inside shots are very grainy.

I tried some outside shots this morning, most are not focused. I set the camera to infinity mode so it should not need to focus anyways.

Really bad cyan shift in a lot of bright areas, like tree branches etc.

Here are the specs as listed for the lens...

[align=left] Bower Day or Night Vision High Resolution Wide Angle Fisheye Lens[/align]
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I Also got their 2x tele lens cause it came in the "package", I can't even get the camera to focus through that.

Does anyone have the same lens? If so, what sort of results are u getting?

I'm about ready to say I've wasted my money here, as it is, it's useless to me. I need clear images, not blurry ones and certainly do not need the colour shifting.

Maybe I am doing something wrong? lol

amazingthailand May 2, 2007 8:26 AM

You didn't say what you paid for the lens, but I am guessing - not much.
When it comes to optics, you get what you pay for. There is a reason that quality wide angles lenses are VERY expensive. It takes a lot to properly correct the lens for aberations and to achieve good focus across the entire frame.

Webguy101au May 2, 2007 8:44 AM

As you would expect, it cost very little and agree, you get what you pay for, I guess i was just hoping someone else had the same lens and was getting good results and it was just me ;-)

Sintares May 2, 2007 1:30 PM

Titanium High Definition

Um, did you buy these addons from ebay ?

Generally when I see a lens described as titanium, high definition or professional, combined with a cheap price,it triggers a "run away" reflex.

:mad:

amazingthailand May 2, 2007 4:44 PM

Yeah, these 'Titanium High Definition' lenses have been discussed before and are known to be of poor quality.

spyro123 May 5, 2007 10:55 PM

Great to know this. I plan to buy these items tomorrow ... and sure i'll cancel it :shock:

tjsnaps May 5, 2007 10:59 PM

Their has to be some brand worth buying.

dnas May 6, 2007 11:05 PM

Before you do anything, set the camera to macro (close up), and see if that sharpens it up at all.

The add on lens modifies the focus characteristic of your camera, and it's often the case that rather than setting itto "infinity", setting it tomacro will work better.

There's nothing you can do about a color shift towards the edges. If the add on lens is not designed with your lens in mind, then it's almost certain to produce color fringing near the edges.



Webguy101au May 6, 2007 11:08 PM

Hi, I think I tried setting it to macro and tried shooting my keyboard and it was not in focus. I may try another test.

Cheers

amazingthailand May 9, 2007 3:36 PM

For tjsnaps: Century Precision Optics makes some excellent addon lenses, although mainly for video cameras.
Some of the Kenko and Raynox lenses are pretty good. Both manufacturers have a good and better line of lenses.
Then there is always the camera manufacturer's addon lens (if they offer one).


For dnas: a crap lens is still crap, regardless of how you focus through it.

dnas May 9, 2007 10:45 PM

amazingthailand wrote:
Quote:

For dnas: a crap lens is still crap, regardless of how you focus through it.
I was refering to the fact that some cameras have a "Add on lens" setting, and that this may have been the case for this camera/lens combination. That means it's worth trying the macro setting, rather than just throwing the whole kit away.

If it wasn't focusing AT ALL, then this is worth a try, regardless of whether it is a crap lens or not.

And I mentioned that nothing can be done about the color shift towards the edges, indicating that this add on lens may not be much good.





dnas May 9, 2007 10:47 PM

Webguy101au wrote:
Quote:

Hi, I think I tried setting it to macro and tried shooting my keyboard and it was not in focus. I may try another test.

Cheers
The macro setting I was refering to, may be needed to focus that add on lens to INFINITY.

Try another test... you may be in luck!!

whisky_n_whisky Jun 15, 2008 9:58 AM

any sample pictures? i would like to see how bad/good the results are.

whisky_n_whisky Jun 23, 2008 12:36 AM

it might be some settings that u are not enabling maybe ???
i got a no name really really cheap .45x wide lens for my olympus sp-550. i actually ordered 2x tele lens but they sent me wrong lens then i was ok with it as 18x optical was already ok.

anyways. in full size photos there definitely is alot of chromatic aberration on top left and right corners. centre of the image is very very clear. on olympus sp550 you have to enable conversion lens option or the camera doesn't want to focus. ur camera might have an option like that.

the chromatic aberration u get on the corners can easily be fixed with photoshop or even paintshop pro has one step crm. ab. removal.


ok now i'll try to put a couple of samples here i took with my camera... (never posted pics here before not sure how it works)

whisky_n_whisky Jun 23, 2008 12:37 AM

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it might be some settings that u are not enabling maybe ???
i got a no name really really cheap .45x wide lens for my olympus sp-550. i actually ordered 2x tele lens but they sent me wrong lens then i was ok with it as 18x optical was already ok.

anyways. in full size photos there definitely is alot of chromatic aberration on top left and right corners. centre of the image is very very clear. on olympus sp550 you have to enable conversion lens option or the camera doesn't want to focus. ur camera might have an option like that.

the chromatic aberration u get on the corners can easily be fixed with photoshop or even paintshop pro has one step crm. ab. removal.


ok now i'll try to put a couple of samples here i took with my camera... (never posted pics here before not sure how it works)

whisky_n_whisky Jun 23, 2008 12:44 AM

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continued from above.

like i said if you have photoshop, or paintshop pro or similar programs u can get rid of most of the chromatic aberration without effecting the overall quality of the image. i definitely wouldn't recommend a low quality lens for bigger prints like posters or 8-9 mega pixel full size prints, but this lens does a perfectly adequate job for 4x6 or even one step bigger prints.

oh also price. i paid about 20 bucks for my lens (yes thats how cheap it is)
above image is an HDR photo with 3 different exposures, also resized so it is at this point very difficult to talk about the quality of the job lens did. but i have much bigger versions of this image on other web sites that you can check. the quality difference isnt that huge.

MrEdinarea51 Jan 1, 2009 3:49 PM

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I also have the Bower Digital Super Wide 0.42x AF Lens. I was quite surprised by the results of this lens, considering the price. I am presently using it on my Sony DSC-H5. By attaching the the lens to my lens hood tube with an adapter ring I am free to zoom throughout the camera's full range without worry of my lens hitting the wide angle lens. The auto focus seems to be working very well even without using the wide conversion lens option on my camera. I too am having some success with my first few shots with this lens. I am still in the experimental stages of it's use and I'm sure that my shots can only get better as I learn the lens' nuances and play with the Macro and Conversion lens options. The one thing that bothers me about using a Conversion lens is the fact that the built in flash is partially blocked by the lens and casts a horrific shadow from the lens, so for flash photography I wouldn't use the Conversion lens unless I want to spend a great deal of time doctoring the Photo with Photoshop.

Here are a few pictures taken with this setup.

MrEdinarea51 Jan 1, 2009 3:52 PM

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Outdoors handheld @1.5 sec shutterspeed (thank God for Image Stabilization)

MrEdinarea51 Jan 1, 2009 3:59 PM

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This is the best flash shot I've taken with this lens attached there was a good amount of ambient light. The depth of field doesn't seem very good but it's within acceptable limits for me.

MrEdinarea51 Jan 1, 2009 4:40 PM

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Here is a shot at app 3" distance with the Wide Angle Conversion lens turned on and the lens not zoomed out so much.

MrEdinarea51 Jan 1, 2009 4:42 PM

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...and this shot is taken at about six feet from the coffee table.


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