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07-27-2016, 07:43 PM   #1
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Two new lenses

Mailman delivered these today. I took four quick shots out the back door at work (through an iron fence) just to see what I would see. Used Av setting. Both have a skylight filter (Marumi DHG Super UV on the 50, Vivitar on the 35.)

1. DA 50mm f1.8: Wide open, 1/250, 100.
2. DA 50mm f1.8: f8, 1/100, 800.

3. DA 35mm f2.4: Wide open, 1/250, 200.
4. DA 35mm f2.4: f8, 1/80, 320.

The first two seem OK for quickies, but the two shot with the 35 seem to have an awful lot of blue haze, or something. Comments would be welcome.

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Last edited by rlg118; 07-27-2016 at 10:33 PM.
07-27-2016, 07:54 PM   #2
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...and without the vivitar skylight filter on the 35? Do you still get purple haze?

By the way, who is "Mailman"? Sounds like a superhero. I want him to bring lenses to my place.
07-27-2016, 08:21 PM   #3
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I second the motion:
get the filters off and compare again,

Also try with hoods,
That 35 especially looks like flare from stray light. Test with the sun at your back
07-27-2016, 08:21 PM   #4
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why use skylight filters on lenses made for digital?

07-27-2016, 08:27 PM   #5
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Reset your camera.!!!!!!!!

I have 35/2.4 and 50/1.8. They have no problem.
07-27-2016, 08:31 PM   #6
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QuoteOriginally posted by beachgardener Quote
why use skylight filters on lenses made for digital?

Same reason I do. To protect the front of the lens from being scratched. It is far cheaper to replace a filter than a lens.
07-27-2016, 09:07 PM - 1 Like   #7
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QuoteOriginally posted by bigdavephoto Quote
Same reason I do. To protect the front of the lens from being scratched. It is far cheaper to replace a filter than a lens.
Those filters weren't designed to protect in that manner though.. if they shatter they will probably end up scratching the front element anyways. Just make sure your lens is wearing a lens hood for protection and it will be OK.
07-27-2016, 09:09 PM   #8
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QuoteOriginally posted by bigdavephoto Quote
Same reason I do. To protect the front of the lens from being scratched. It is far cheaper to replace a filter than a lens.

Filters seem to provide more cons than pros.

07-27-2016, 09:13 PM   #9
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QuoteOriginally posted by bigdavephoto Quote
Same reason I do. To protect the front of the lens from being scratched. It is far cheaper to replace a filter than a lens.
Why live with worse IQ and flare? I've got a 24mm I bought all scratched to heck, and with a hood on, really not much of an impact on IQ. I'd argue that the filter probably makes the IQ and flare worse than a small scratch or two.
07-27-2016, 09:39 PM   #10
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QuoteOriginally posted by rlg118 Quote
The first two seem OK for quickies, but the two shot with the 35 seem to have an awful lot of blue haze, or something. Comments would be welcome.
The shots at 50mm don't have much bright sky. The 35mm has a bright sky, and the filter is robbing your contrast and causing other problems.

Modern glass coatings are tough and don't need a filter for protection. The filter reduces image quality. Lenses get broken from being dropped or from water damage. It's exceedingly rare to see cases where the front glass breaks or gets badly scratched.

IMO protection filters are only justified when you expect salt spray, paint splatter, dust storms, or other extreme conditions likely to stain or scour the glass.
07-27-2016, 10:14 PM - 1 Like   #11
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Thanks all.

Trying without the filters occurred to me afterwards & I'll try that tomorrow.

Both lenses have hoods.

All four pictures were taken within a few moments of each other. The sun was at my 2 o'clock - not much I could do about it at 7:30 P.M. No similar views in any other direction. (I wanted to shoot through the fence.) I'll try some shots in the woods while dog-walking tomorrow.

As long as no one said "send it back" I'll sleep better.

"Mailman" has brought me a new K-50, three lenses, and a flash in the last month. His name is spoken with reverence in this house. ;-)

Cheers!
07-27-2016, 10:17 PM   #12
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First of all, dont use old film era or very cheap filters, if its plain for protection- get Hoya Fusion protectors or UV filters. If you need front element protector, get yorself a screw-on hood, rubber collapsible or metal one.
07-27-2016, 10:32 PM   #13
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The Vivitar is old. I may have had it on a K1000. But I thought Marumi was a good name, no?
07-27-2016, 10:57 PM - 1 Like   #14
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Fling the UV filters over that iron fence, RLG. :-)
07-27-2016, 11:03 PM   #15
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Marumi is good in general and they have different range of filters, some better than others.

2pm, might be harsh light then, try at a time when potentially the light has a nicer quality, and maybe a different subject with and without the filters.

http://www.marumi-filter.co.jp/en/

Last edited by beachgardener; 07-28-2016 at 03:55 PM.
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